{
  "source": "https://earthsupportcorp.com",
  "generatedAt": "2026-09-15T14:01:52.384Z",
  "license": "CC-BY-4.0",
  "data": {
    "name": "ESC Price Check: published unit prices against public bids",
    "description": "Each of Earth Support Corp.’s published unit prices that has like-for-like public pay items on at least 3 lettings, set against the weighted field of public bids for the same work. A budget comparison, not a quote or a guarantee.",
    "headline": "ESC’s rate, as a general contractor carries it, sits under the median public bid on 33 of 40 published rates (27 of 32 with strong evidence). The median position across all 40 is −22.8%; 7 rates sit over the median.",
    "basisNote": "ESC’s published typical rate plus 10%, because a public pay-line price already carries the general contractor’s markup, set against 1,953 public bids on 230 lettings from 10 public agencies (2003–2026), restated to 2026 dollars and a typical ESC job size, and weighted toward recent lettings with each letting counted once.",
    "caveats": [
      "Unit prices move. Public unit prices vary with site, access and quantity, and some bidders unbalance line items, loading one pay item and lightening another. Read the middle of the field, not any single bid.",
      "Not a quote. This compares published budget rates with public records. It is not a quote or a guarantee; a firm price comes from your drawings, within 3 business days.",
      "Per unit only. Mobilization, bonds and ground-condition adders are separate items in the price book, so they sit outside the per-unit comparison.",
      "Evidence is graded. 32 of 40 rates rest on 8 or more lettings (strong); the other 8 rest on 3 to 7 (moderate)."
    ],
    "builtAt": "2026-09-14T15:04:19+00:00",
    "schema": "esc-bid-benchmarks/1",
    "priceBook": {
      "revision": 1,
      "issueDate": "2026-09-14",
      "validThrough": "2026-12-13",
      "url": "https://earthsupportcorp.com/unit-prices"
    },
    "links": {
      "page": "https://earthsupportcorp.com/budget",
      "estimator": "https://earthsupportcorp.com/budget#estimator",
      "methodology": "https://earthsupportcorp.com/budget/methodology",
      "benchmarksCsv": "https://earthsupportcorp.com/budget/bid-benchmarks.csv",
      "publicBidsCsv": "https://earthsupportcorp.com/budget/public-bids.csv",
      "requestQuote": "https://earthsupportcorp.com/api/contact.json"
    },
    "basis": {
      "dollars_year": 2026,
      "gc_markup": 0.1,
      "recency_half_life_years": 3,
      "window_from": 2019,
      "min_lettings": 3,
      "strong_lettings": 8,
      "size_range_in": [
        12,
        54
      ],
      "quantiles": [
        0.1,
        0.25,
        0.5,
        0.75,
        0.9
      ]
    },
    "summary": {
      "rows": 40,
      "rows_below_median": 33,
      "rows_strong": 32,
      "rows_strong_below_median": 27,
      "items": 18,
      "items_all_rows_below_median": 12,
      "median_vs_median": -0.2282,
      "median_share_above": 0.6085,
      "bids": 1953,
      "lettings": 230,
      "agencies": 10,
      "states": 8,
      "year_min": 2003,
      "year_max": 2026
    },
    "agencies": [
      {
        "code": "CTDOT",
        "name": "Connecticut Department of Transportation",
        "state": "CT",
        "region": "New England",
        "lettings": 102,
        "bids": 728
      },
      {
        "code": "MassDOT",
        "name": "Massachusetts Department of Transportation",
        "state": "MA",
        "region": "New England",
        "lettings": 57,
        "bids": 626
      },
      {
        "code": "NCDOT",
        "name": "North Carolina Department of Transportation",
        "state": "NC",
        "region": "national",
        "lettings": 24,
        "bids": 309
      },
      {
        "code": "NHDOT",
        "name": "New Hampshire Department of Transportation",
        "state": "NH",
        "region": "New England",
        "lettings": 23,
        "bids": 131
      },
      {
        "code": "MBTA",
        "name": "Massachusetts Bay Transportation Authority",
        "state": "MA",
        "region": "New England",
        "lettings": 10,
        "bids": 92
      },
      {
        "code": "RIDOT",
        "name": "Rhode Island Department of Transportation",
        "state": "RI",
        "region": "New England",
        "lettings": 6,
        "bids": 36
      },
      {
        "code": "TxDOT",
        "name": "Texas Department of Transportation",
        "state": "TX",
        "region": "national",
        "lettings": 4,
        "bids": 12
      },
      {
        "code": "MaineDOT",
        "name": "Maine Department of Transportation",
        "state": "ME",
        "region": "New England",
        "lettings": 2,
        "bids": 14
      },
      {
        "code": "MaineTurnpike",
        "name": "Maine Turnpike Authority",
        "state": "ME",
        "region": "New England",
        "lettings": 1,
        "bids": 3
      },
      {
        "code": "VTrans",
        "name": "Vermont Agency of Transportation",
        "state": "VT",
        "region": "New England",
        "lettings": 1,
        "bids": 2
      }
    ],
    "items": [
      {
        "id": "SPL-LAGGING",
        "slug": "spl-lagging",
        "name": "Timber lagging, install (and remove where required)",
        "group": "soldier-pile",
        "group_name": "Soldier Pile & Lagging",
        "unit": "SF",
        "rows": [
          "SPL-LAGGING|LIP",
          "SPL-LAGGING|REMOVE"
        ],
        "pools": [
          "spl-lagging"
        ],
        "evidence": "moderate",
        "rows_below_median": 2,
        "vs_median": -0.3778,
        "url": "https://earthsupportcorp.com/budget/spl-lagging"
      },
      {
        "id": "SOE-FACE",
        "slug": "soe-face",
        "name": "Temporary support of excavation, per SF of retained face (DOT basis)",
        "group": "pits",
        "group_name": "Pump-Station Boxes & Pits",
        "unit": "SF",
        "rows": [
          "SOE-FACE|SPL",
          "SOE-FACE|BRACED"
        ],
        "pools": [
          "soe-face-temp"
        ],
        "evidence": "strong",
        "rows_below_median": 2,
        "vs_median": -0.3275,
        "url": "https://earthsupportcorp.com/budget/soe-face"
      },
      {
        "id": "UP-PIT-POUR",
        "slug": "up-pit-pour",
        "name": "Underpinning, pit-and-pour (hand-dug sequential pits, concrete)",
        "group": "underpinning",
        "group_name": "Underpinning",
        "unit": "CY",
        "rows": [
          "UP-PIT-POUR"
        ],
        "pools": [
          "underpin-cy"
        ],
        "evidence": "moderate",
        "rows_below_median": 1,
        "vs_median": -0.4064,
        "url": "https://earthsupportcorp.com/budget/up-pit-pour"
      },
      {
        "id": "RA-ANCHOR",
        "slug": "ra-anchor",
        "name": "Rock anchor, drilled, grouted, threadbar",
        "group": "anchors",
        "group_name": "Rock Anchors & Dowels",
        "unit": "LF",
        "rows": [
          "RA-ANCHOR|BAR"
        ],
        "pools": [
          "ra-anchor-bar"
        ],
        "evidence": "strong",
        "rows_below_median": 0,
        "vs_median": 0.0505,
        "url": "https://earthsupportcorp.com/budget/ra-anchor"
      },
      {
        "id": "RA-DOWEL",
        "slug": "ra-dowel",
        "name": "Rock dowel / footing pin, drilled & grouted (untensioned)",
        "group": "anchors",
        "group_name": "Rock Anchors & Dowels",
        "unit": "EA",
        "rows": [
          "RA-DOWEL|10",
          "RA-DOWEL|LF"
        ],
        "pools": [
          "ra-dowel-10ft",
          "ra-dowel-lf"
        ],
        "evidence": "strong",
        "rows_below_median": 0,
        "vs_median": 0.0235,
        "url": "https://earthsupportcorp.com/budget/ra-dowel"
      },
      {
        "id": "ANC-TEST-PERF",
        "slug": "anc-test-perf",
        "name": "Anchor performance test",
        "group": "anchors",
        "group_name": "Rock Anchors & Dowels",
        "unit": "EA",
        "rows": [
          "ANC-TEST-PERF",
          "ANC-TEST-PERF|ANC-TEST-CREEP"
        ],
        "pools": [
          "anc-test-perf",
          "anc-test-creep"
        ],
        "evidence": "mixed",
        "rows_below_median": 2,
        "vs_median": -0.1285,
        "url": "https://earthsupportcorp.com/budget/anc-test-perf"
      },
      {
        "id": "ANC-TEST-PROOF",
        "slug": "anc-test-proof",
        "name": "Anchor proof test",
        "group": "anchors",
        "group_name": "Rock Anchors & Dowels",
        "unit": "EA",
        "rows": [
          "ANC-TEST-PROOF"
        ],
        "pools": [
          "anc-test-proof"
        ],
        "evidence": "strong",
        "rows_below_median": 1,
        "vs_median": -0.3093,
        "url": "https://earthsupportcorp.com/budget/anc-test-proof"
      },
      {
        "id": "SN-NAIL",
        "slug": "sn-nail",
        "name": "Soil nail, drilled & grouted",
        "group": "soil-nails",
        "group_name": "Soil Nails",
        "unit": "LF",
        "rows": [
          "SN-NAIL|SOLID",
          "SN-NAIL|HOLLOW"
        ],
        "pools": [
          "sn-nail"
        ],
        "evidence": "moderate",
        "rows_below_median": 2,
        "vs_median": -0.45,
        "url": "https://earthsupportcorp.com/budget/sn-nail"
      },
      {
        "id": "SN-FACING",
        "slug": "sn-facing",
        "name": "Shotcrete facing (temporary), by ESC's shotcrete partner",
        "group": "soil-nails",
        "group_name": "Soil Nails",
        "unit": "SF",
        "rows": [
          "SN-FACING"
        ],
        "pools": [
          "sn-facing"
        ],
        "evidence": "moderate",
        "rows_below_median": 0,
        "vs_median": 0.4138,
        "url": "https://earthsupportcorp.com/budget/sn-facing"
      },
      {
        "id": "SN-TEST",
        "slug": "sn-test",
        "name": "Soil nail verification / proof test",
        "group": "soil-nails",
        "group_name": "Soil Nails",
        "unit": "EA",
        "rows": [
          "SN-TEST|VERIF",
          "SN-TEST|PROOF"
        ],
        "pools": [
          "sn-test-verif",
          "sn-test-proof"
        ],
        "evidence": "strong",
        "rows_below_median": 1,
        "vs_median": 0.0294,
        "url": "https://earthsupportcorp.com/budget/sn-test"
      },
      {
        "id": "SN-WALL",
        "slug": "sn-wall",
        "name": "Soil nail wall, complete, per SF of face (assembly)",
        "group": "soil-nails",
        "group_name": "Soil Nails",
        "unit": "SF",
        "rows": [
          "SN-WALL"
        ],
        "pools": [
          "sn-wall"
        ],
        "evidence": "strong",
        "rows_below_median": 1,
        "vs_median": -0.2157,
        "url": "https://earthsupportcorp.com/budget/sn-wall"
      },
      {
        "id": "DS-SHAFT-SOIL",
        "slug": "ds-shaft-soil",
        "name": "Drilled shaft / caisson excavation in soil, by diameter",
        "group": "drilled-shafts",
        "group_name": "Drilled Shafts & Caissons",
        "unit": "LF",
        "rows": [
          "DS-SHAFT-SOIL|18",
          "DS-SHAFT-SOIL|24",
          "DS-SHAFT-SOIL|30",
          "DS-SHAFT-SOIL|36",
          "DS-SHAFT-SOIL|42"
        ],
        "pools": [
          "ds-shaft-soil-exc"
        ],
        "evidence": "strong",
        "rows_below_median": 5,
        "vs_median": -0.2022,
        "url": "https://earthsupportcorp.com/budget/ds-shaft-soil"
      },
      {
        "id": "DS-SOCKET-ROCK",
        "slug": "ds-socket-rock",
        "name": "Rock socket, by diameter",
        "group": "drilled-shafts",
        "group_name": "Drilled Shafts & Caissons",
        "unit": "LF",
        "rows": [
          "DS-SOCKET-ROCK|18",
          "DS-SOCKET-ROCK|24",
          "DS-SOCKET-ROCK|30",
          "DS-SOCKET-ROCK|36",
          "DS-SOCKET-ROCK|42"
        ],
        "pools": [
          "ds-socket-rock-exc"
        ],
        "evidence": "strong",
        "rows_below_median": 5,
        "vs_median": -0.2805,
        "url": "https://earthsupportcorp.com/budget/ds-socket-rock"
      },
      {
        "id": "DS-CAGE",
        "slug": "ds-cage",
        "name": "Reinforcing cage, furnish & set (or set only)",
        "group": "drilled-shafts",
        "group_name": "Drilled Shafts & Caissons",
        "unit": "LB",
        "rows": [
          "DS-CAGE|FURNISH"
        ],
        "pools": [
          "ds-cage"
        ],
        "evidence": "moderate",
        "rows_below_median": 0,
        "vs_median": 0.2519,
        "url": "https://earthsupportcorp.com/budget/ds-cage"
      },
      {
        "id": "DS-CSL-TUBE",
        "slug": "ds-csl-tube",
        "name": "Crosshole sonic logging (CSL) access tubes",
        "group": "drilled-shafts",
        "group_name": "Drilled Shafts & Caissons",
        "unit": "LF",
        "rows": [
          "DS-CSL-TUBE"
        ],
        "pools": [
          "ds-csl-tube"
        ],
        "evidence": "strong",
        "rows_below_median": 1,
        "vs_median": -0.2646,
        "url": "https://earthsupportcorp.com/budget/ds-csl-tube"
      },
      {
        "id": "DS-SHAFT-COMPLETE",
        "slug": "ds-shaft-complete",
        "name": "Complete drilled shaft in soil (excavation, cage & concrete), by diameter",
        "group": "drilled-shafts",
        "group_name": "Drilled Shafts & Caissons",
        "unit": "LF",
        "rows": [
          "DS-SHAFT-COMPLETE|18",
          "DS-SHAFT-COMPLETE|24",
          "DS-SHAFT-COMPLETE|30",
          "DS-SHAFT-COMPLETE|36",
          "DS-SHAFT-COMPLETE|42"
        ],
        "pools": [
          "ds-shaft-soil-complete"
        ],
        "evidence": "strong",
        "rows_below_median": 5,
        "vs_median": -0.0474,
        "url": "https://earthsupportcorp.com/budget/ds-shaft-complete"
      },
      {
        "id": "GC-LOAD-TEST",
        "slug": "gc-load-test",
        "name": "Pile / anchor load test program",
        "group": "ground-checks",
        "group_name": "Ground Checks & Testing",
        "unit": "EA",
        "rows": [
          "GC-LOAD-TEST|COMP"
        ],
        "pools": [
          "gc-load-test-static-axial"
        ],
        "evidence": "strong",
        "rows_below_median": 0,
        "vs_median": 0.1263,
        "url": "https://earthsupportcorp.com/budget/gc-load-test"
      },
      {
        "id": "OBS-LF",
        "slug": "obs-lf",
        "name": "Obstruction drilling, per LF by diameter",
        "group": "obstructions",
        "group_name": "Obstructions",
        "unit": "LF",
        "rows": [
          "OBS-LF|18",
          "OBS-LF|24",
          "OBS-LF|30",
          "OBS-LF|36",
          "OBS-LF|42"
        ],
        "pools": [
          "obs-lf"
        ],
        "evidence": "strong",
        "rows_below_median": 5,
        "vs_median": -0.4093,
        "url": "https://earthsupportcorp.com/budget/obs-lf"
      }
    ],
    "rows": [
      {
        "key": "SPL-LAGGING|LIP",
        "item_id": "SPL-LAGGING",
        "variant": "LIP",
        "book_id": "SPL-LAGGING-LIP",
        "name": "Timber lagging, install (and remove where required)",
        "label": "Left in place",
        "group": "soldier-pile",
        "group_name": "Soldier Pile & Lagging",
        "unit": "SF",
        "pool": "spl-lagging",
        "size_in": null,
        "esc": {
          "low": 32.5,
          "typical": 41.5,
          "high": 56,
          "carried": 45.65
        },
        "field": {
          "p10": 12.08,
          "p25": 17.83,
          "p50": 75.58,
          "p75": 93.71,
          "p90": 171.4,
          "low_bid": 12.52,
          "bids": 35,
          "lettings": 5,
          "lines": 6
        },
        "position": {
          "vs_median": -0.396,
          "share_above": 0.5959,
          "lines_below_low": 2,
          "lines": 6
        },
        "evidence": "moderate",
        "bookUrl": "https://earthsupportcorp.com/unit-prices#SPL-LAGGING-LIP"
      },
      {
        "key": "SPL-LAGGING|REMOVE",
        "item_id": "SPL-LAGGING",
        "variant": "REMOVE",
        "book_id": "SPL-LAGGING-REMOVE",
        "name": "Timber lagging, install (and remove where required)",
        "label": "Install and remove",
        "group": "soldier-pile",
        "group_name": "Soldier Pile & Lagging",
        "unit": "SF",
        "pool": "spl-lagging",
        "size_in": null,
        "esc": {
          "low": 36,
          "typical": 44,
          "high": 59.5,
          "carried": 48.4
        },
        "field": {
          "p10": 12.08,
          "p25": 17.83,
          "p50": 75.58,
          "p75": 93.71,
          "p90": 171.4,
          "low_bid": 12.52,
          "bids": 35,
          "lettings": 5,
          "lines": 6
        },
        "position": {
          "vs_median": -0.3596,
          "share_above": 0.583,
          "lines_below_low": 2,
          "lines": 6
        },
        "evidence": "moderate",
        "bookUrl": "https://earthsupportcorp.com/unit-prices#SPL-LAGGING-REMOVE"
      },
      {
        "key": "SOE-FACE|SPL",
        "item_id": "SOE-FACE",
        "variant": "SPL",
        "book_id": "SOE-FACE-SPL",
        "name": "Temporary support of excavation, per SF of retained face (DOT basis)",
        "label": "Cantilever soldier pile & lagging",
        "group": "pits",
        "group_name": "Pump-Station Boxes & Pits",
        "unit": "SF",
        "pool": "soe-face-temp",
        "size_in": null,
        "esc": {
          "low": 64.5,
          "typical": 64.5,
          "high": 87.5,
          "carried": 70.95
        },
        "field": {
          "p10": 7.82,
          "p25": 53.23,
          "p50": 103.04,
          "p75": 162.76,
          "p90": 259.19,
          "low_bid": 24.29,
          "bids": 716,
          "lettings": 119,
          "lines": 123
        },
        "position": {
          "vs_median": -0.3114,
          "share_above": 0.6737,
          "lines_below_low": 32,
          "lines": 123
        },
        "evidence": "strong",
        "bookUrl": "https://earthsupportcorp.com/unit-prices#SOE-FACE-SPL"
      },
      {
        "key": "SOE-FACE|BRACED",
        "item_id": "SOE-FACE",
        "variant": "BRACED",
        "book_id": "SOE-FACE-BRACED",
        "name": "Temporary support of excavation, per SF of retained face (DOT basis)",
        "label": "Braced system",
        "group": "pits",
        "group_name": "Pump-Station Boxes & Pits",
        "unit": "SF",
        "pool": "soe-face-temp",
        "size_in": null,
        "esc": {
          "low": 61.5,
          "typical": 61.5,
          "high": 90.5,
          "carried": 67.65
        },
        "field": {
          "p10": 7.82,
          "p25": 53.23,
          "p50": 103.04,
          "p75": 162.76,
          "p90": 259.19,
          "low_bid": 24.29,
          "bids": 716,
          "lettings": 119,
          "lines": 123
        },
        "position": {
          "vs_median": -0.3435,
          "share_above": 0.6851,
          "lines_below_low": 34,
          "lines": 123
        },
        "evidence": "strong",
        "bookUrl": "https://earthsupportcorp.com/unit-prices#SOE-FACE-BRACED"
      },
      {
        "key": "UP-PIT-POUR",
        "item_id": "UP-PIT-POUR",
        "variant": null,
        "book_id": "UP-PIT-POUR",
        "name": "Underpinning, pit-and-pour (hand-dug sequential pits, concrete)",
        "label": "",
        "group": "underpinning",
        "group_name": "Underpinning",
        "unit": "CY",
        "pool": "underpin-cy",
        "size_in": null,
        "esc": {
          "low": 3550,
          "typical": 4550,
          "high": 6450,
          "carried": 5005
        },
        "field": {
          "p10": 2666.43,
          "p25": 4041.16,
          "p50": 8431.69,
          "p75": 9953.79,
          "p90": 10941.94,
          "low_bid": 6086.49,
          "bids": 20,
          "lettings": 4,
          "lines": 4
        },
        "position": {
          "vs_median": -0.4064,
          "share_above": 0.6522,
          "lines_below_low": 1,
          "lines": 4
        },
        "evidence": "moderate",
        "bookUrl": "https://earthsupportcorp.com/unit-prices#UP-PIT-POUR"
      },
      {
        "key": "RA-ANCHOR|BAR",
        "item_id": "RA-ANCHOR",
        "variant": "BAR",
        "book_id": "RA-ANCHOR-BAR",
        "name": "Rock anchor, drilled, grouted, threadbar",
        "label": "Threadbar anchor",
        "group": "anchors",
        "group_name": "Rock Anchors & Dowels",
        "unit": "LF",
        "pool": "ra-anchor-bar",
        "size_in": null,
        "esc": {
          "low": 145,
          "typical": 200,
          "high": 290,
          "carried": 220
        },
        "field": {
          "p10": 190.35,
          "p25": 199.87,
          "p50": 209.43,
          "p75": 323.49,
          "p90": 476.59,
          "low_bid": 205.51,
          "bids": 38,
          "lettings": 11,
          "lines": 11
        },
        "position": {
          "vs_median": 0.0505,
          "share_above": 0.4637,
          "lines_below_low": 1,
          "lines": 11
        },
        "evidence": "strong",
        "bookUrl": "https://earthsupportcorp.com/unit-prices#RA-ANCHOR-BAR"
      },
      {
        "key": "RA-DOWEL|10",
        "item_id": "RA-DOWEL",
        "variant": "10",
        "book_id": "RA-DOWEL-10",
        "name": "Rock dowel / footing pin, drilled & grouted (untensioned)",
        "label": "Up to 10 ft embedment",
        "group": "anchors",
        "group_name": "Rock Anchors & Dowels",
        "unit": "EA",
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        "evidence": "strong",
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      {
        "key": "RA-DOWEL|LF",
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        "group_name": "Rock Anchors & Dowels",
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      {
        "key": "ANC-TEST-PERF",
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        "evidence": "strong",
        "bookUrl": "https://earthsupportcorp.com/unit-prices#ANC-TEST-PERF"
      },
      {
        "key": "ANC-TEST-PERF|ANC-TEST-CREEP",
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        "evidence": "moderate",
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        "key": "ANC-TEST-PROOF",
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        "evidence": "strong",
        "bookUrl": "https://earthsupportcorp.com/unit-prices#ANC-TEST-PROOF"
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      {
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        "evidence": "moderate",
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        "key": "SN-FACING",
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        "evidence": "moderate",
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        "key": "SN-TEST|VERIF",
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        "evidence": "strong",
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        "key": "SN-TEST|PROOF",
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        "evidence": "strong",
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        "key": "SN-WALL",
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        "evidence": "strong",
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        "evidence": "strong",
        "bookUrl": "https://earthsupportcorp.com/unit-prices#DS-SOCKET-ROCK-42"
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      {
        "key": "DS-CAGE|FURNISH",
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        "evidence": "moderate",
        "bookUrl": "https://earthsupportcorp.com/unit-prices#DS-CAGE-FURNISH"
      },
      {
        "key": "DS-CSL-TUBE",
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        "book_id": "DS-CSL-TUBE",
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        "group_name": "Drilled Shafts & Caissons",
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        "position": {
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          "lines": 12
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        "evidence": "strong",
        "bookUrl": "https://earthsupportcorp.com/unit-prices#DS-CSL-TUBE"
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      {
        "key": "DS-SHAFT-COMPLETE|18",
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        "book_id": "DS-SHAFT-COMPLETE-18",
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        "group_name": "Drilled Shafts & Caissons",
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        "position": {
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        "evidence": "strong",
        "bookUrl": "https://earthsupportcorp.com/unit-prices#DS-SHAFT-COMPLETE-18"
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      {
        "key": "DS-SHAFT-COMPLETE|24",
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        "group_name": "Drilled Shafts & Caissons",
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        "position": {
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          "lines": 19
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        "evidence": "strong",
        "bookUrl": "https://earthsupportcorp.com/unit-prices#DS-SHAFT-COMPLETE-24"
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      {
        "key": "DS-SHAFT-COMPLETE|30",
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        "group_name": "Drilled Shafts & Caissons",
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        "evidence": "strong",
        "bookUrl": "https://earthsupportcorp.com/unit-prices#DS-SHAFT-COMPLETE-30"
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      {
        "key": "DS-SHAFT-COMPLETE|36",
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        "evidence": "strong",
        "bookUrl": "https://earthsupportcorp.com/unit-prices#DS-SHAFT-COMPLETE-36"
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      {
        "key": "DS-SHAFT-COMPLETE|42",
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        "evidence": "strong",
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        "key": "GC-LOAD-TEST|COMP",
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        "evidence": "strong",
        "bookUrl": "https://earthsupportcorp.com/unit-prices#GC-LOAD-TEST-COMP"
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        "key": "OBS-LF|18",
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        "evidence": "strong",
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        "evidence": "strong",
        "bookUrl": "https://earthsupportcorp.com/unit-prices#OBS-LF-24"
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        "key": "OBS-LF|30",
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        "evidence": "strong",
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        "evidence": "strong",
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      {
        "key": "OBS-LF|42",
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        "evidence": "strong",
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            "code": "RIDOT",
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            "code": "VTrans",
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        "id": "soe-face-temp",
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            "code": "MassDOT",
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            "code": "RIDOT",
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        "id": "underpin-cy",
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            "code": "CTDOT",
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        "year_min": 2012,
        "year_max": 2022,
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        ],
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        "id": "ra-dowel-10ft",
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            "code": "MaineDOT",
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          {
            "code": "MassDOT",
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        ],
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      {
        "id": "ra-dowel-lf",
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            "code": "MaineDOT",
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          {
            "code": "MassDOT",
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        "id": "anc-test-perf",
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            "code": "MassDOT",
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        "rows": [
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      {
        "id": "anc-test-creep",
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        "year_min": 2019,
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        "id": "anc-test-proof",
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            "code": "MassDOT",
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        "id": "sn-nail",
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        "item_id": "SN-NAIL",
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        "size_family": false,
        "size_exponent": null,
        "reference_qty": 1200,
        "qty_restated": true,
        "window": "all years",
        "region": "New England",
        "lettings": 3,
        "bids": 17,
        "lines": 3,
        "year_min": 2018,
        "year_max": 2023,
        "agencies": [
          {
            "code": "CTDOT",
            "lettings": 1
          },
          {
            "code": "MaineDOT",
            "lettings": 1
          },
          {
            "code": "NHDOT",
            "lettings": 1
          }
        ],
        "rows": [
          "SN-NAIL|SOLID",
          "SN-NAIL|HOLLOW"
        ]
      },
      {
        "id": "sn-facing",
        "title": "Shotcrete facing (temporary), by ESC's shotcrete partner",
        "item_id": "SN-FACING",
        "unit": "SF",
        "size_family": false,
        "size_exponent": null,
        "reference_qty": 2000,
        "qty_restated": true,
        "window": "all years",
        "region": "New England",
        "lettings": 3,
        "bids": 20,
        "lines": 3,
        "year_min": 2018,
        "year_max": 2022,
        "agencies": [
          {
            "code": "CTDOT",
            "lettings": 2
          },
          {
            "code": "NHDOT",
            "lettings": 1
          }
        ],
        "rows": [
          "SN-FACING"
        ]
      },
      {
        "id": "sn-test-verif",
        "title": "Soil nail verification / proof test — Verification test",
        "item_id": "SN-TEST",
        "unit": "EA",
        "size_family": false,
        "size_exponent": null,
        "reference_qty": 2,
        "qty_restated": true,
        "window": "2019 onward",
        "region": "New England and national",
        "lettings": 21,
        "bids": 104,
        "lines": 21,
        "year_min": 2019,
        "year_max": 2026,
        "agencies": [
          {
            "code": "NCDOT",
            "lettings": 20
          },
          {
            "code": "MaineDOT",
            "lettings": 1
          }
        ],
        "rows": [
          "SN-TEST|VERIF"
        ]
      },
      {
        "id": "sn-test-proof",
        "title": "Soil nail verification / proof test — Proof test",
        "item_id": "SN-TEST",
        "unit": "EA",
        "size_family": false,
        "size_exponent": null,
        "reference_qty": 6.5,
        "qty_restated": true,
        "window": "2019 onward",
        "region": "New England and national",
        "lettings": 22,
        "bids": 105,
        "lines": 22,
        "year_min": 2019,
        "year_max": 2026,
        "agencies": [
          {
            "code": "NCDOT",
            "lettings": 22
          }
        ],
        "rows": [
          "SN-TEST|PROOF"
        ]
      },
      {
        "id": "sn-wall",
        "title": "Soil nail wall, complete, per SF of face (assembly)",
        "item_id": "SN-WALL",
        "unit": "SF",
        "size_family": false,
        "size_exponent": null,
        "reference_qty": 2000,
        "qty_restated": true,
        "window": "2019 onward",
        "region": "New England and national",
        "lettings": 26,
        "bids": 118,
        "lines": 26,
        "year_min": 2019,
        "year_max": 2026,
        "agencies": [
          {
            "code": "NCDOT",
            "lettings": 22
          },
          {
            "code": "TxDOT",
            "lettings": 4
          }
        ],
        "rows": [
          "SN-WALL"
        ]
      },
      {
        "id": "ds-shaft-soil-exc",
        "title": "Drilled shaft / caisson excavation in soil, by diameter",
        "item_id": "DS-SHAFT-SOIL",
        "unit": "LF",
        "size_family": true,
        "size_exponent": 0.8995,
        "reference_qty": 140,
        "qty_restated": true,
        "window": "2019 onward",
        "region": "New England",
        "lettings": 17,
        "bids": 101,
        "lines": 21,
        "year_min": 2019,
        "year_max": 2026,
        "agencies": [
          {
            "code": "MassDOT",
            "lettings": 16
          },
          {
            "code": "CTDOT",
            "lettings": 1
          }
        ],
        "rows": [
          "DS-SHAFT-SOIL|18",
          "DS-SHAFT-SOIL|24",
          "DS-SHAFT-SOIL|30",
          "DS-SHAFT-SOIL|36",
          "DS-SHAFT-SOIL|42"
        ]
      },
      {
        "id": "ds-socket-rock-exc",
        "title": "Rock socket, by diameter",
        "item_id": "DS-SOCKET-ROCK",
        "unit": "LF",
        "size_family": true,
        "size_exponent": 0.8301,
        "reference_qty": 15.5,
        "qty_restated": true,
        "window": "2019 onward",
        "region": "New England",
        "lettings": 23,
        "bids": 139,
        "lines": 27,
        "year_min": 2019,
        "year_max": 2026,
        "agencies": [
          {
            "code": "MassDOT",
            "lettings": 20
          },
          {
            "code": "CTDOT",
            "lettings": 3
          }
        ],
        "rows": [
          "DS-SOCKET-ROCK|18",
          "DS-SOCKET-ROCK|24",
          "DS-SOCKET-ROCK|30",
          "DS-SOCKET-ROCK|36",
          "DS-SOCKET-ROCK|42"
        ]
      },
      {
        "id": "ds-cage",
        "title": "Reinforcing cage, furnish & set (or set only)",
        "item_id": "DS-CAGE",
        "unit": "LB",
        "size_family": false,
        "size_exponent": null,
        "reference_qty": 9438,
        "qty_restated": true,
        "window": "all years",
        "region": "New England",
        "lettings": 6,
        "bids": 26,
        "lines": 7,
        "year_min": 2013,
        "year_max": 2024,
        "agencies": [
          {
            "code": "NHDOT",
            "lettings": 6
          }
        ],
        "rows": [
          "DS-CAGE|FURNISH"
        ]
      },
      {
        "id": "ds-csl-tube",
        "title": "Crosshole sonic logging (CSL) access tubes",
        "item_id": "DS-CSL-TUBE",
        "unit": "LF",
        "size_family": false,
        "size_exponent": null,
        "reference_qty": 552.5,
        "qty_restated": true,
        "window": "2019 onward",
        "region": "New England",
        "lettings": 12,
        "bids": 58,
        "lines": 12,
        "year_min": 2019,
        "year_max": 2025,
        "agencies": [
          {
            "code": "MassDOT",
            "lettings": 12
          }
        ],
        "rows": [
          "DS-CSL-TUBE"
        ]
      },
      {
        "id": "ds-shaft-soil-complete",
        "title": "Complete drilled shaft in soil (excavation, cage & concrete), by diameter",
        "item_id": "DS-SHAFT-COMPLETE",
        "unit": "LF",
        "size_family": true,
        "size_exponent": 1.1283,
        "reference_qty": 140,
        "qty_restated": true,
        "window": "all years",
        "region": "New England",
        "lettings": 13,
        "bids": 107,
        "lines": 19,
        "year_min": 2003,
        "year_max": 2026,
        "agencies": [
          {
            "code": "MBTA",
            "lettings": 7
          },
          {
            "code": "CTDOT",
            "lettings": 5
          },
          {
            "code": "MaineTurnpike",
            "lettings": 1
          }
        ],
        "rows": [
          "DS-SHAFT-COMPLETE|18",
          "DS-SHAFT-COMPLETE|24",
          "DS-SHAFT-COMPLETE|30",
          "DS-SHAFT-COMPLETE|36",
          "DS-SHAFT-COMPLETE|42"
        ]
      },
      {
        "id": "gc-load-test-static-axial",
        "title": "Pile / anchor load test program",
        "item_id": "GC-LOAD-TEST",
        "unit": "EA",
        "size_family": false,
        "size_exponent": null,
        "reference_qty": null,
        "qty_restated": false,
        "window": "2019 onward",
        "region": "New England",
        "lettings": 20,
        "bids": 105,
        "lines": 21,
        "year_min": 2019,
        "year_max": 2025,
        "agencies": [
          {
            "code": "MassDOT",
            "lettings": 10
          },
          {
            "code": "RIDOT",
            "lettings": 4
          },
          {
            "code": "MBTA",
            "lettings": 3
          },
          {
            "code": "NHDOT",
            "lettings": 3
          }
        ],
        "rows": [
          "GC-LOAD-TEST|COMP"
        ]
      },
      {
        "id": "obs-lf",
        "title": "Obstruction drilling, per LF by diameter",
        "item_id": "OBS-LF",
        "unit": "LF",
        "size_family": true,
        "size_exponent": 0.9806,
        "reference_qty": 16,
        "qty_restated": true,
        "window": "2019 onward",
        "region": "New England",
        "lettings": 13,
        "bids": 78,
        "lines": 16,
        "year_min": 2019,
        "year_max": 2026,
        "agencies": [
          {
            "code": "MassDOT",
            "lettings": 13
          }
        ],
        "rows": [
          "OBS-LF|18",
          "OBS-LF|24",
          "OBS-LF|30",
          "OBS-LF|36",
          "OBS-LF|42"
        ]
      }
    ]
  }
}