Earth Support Corp

Price checkSoil NailsPer SF

Soil nail wall, complete, per SF of face (assembly)

What bidders priced on like-for-like public pay items, from public agency bid tabulations restated to 2026 dollars and a typical job, against ESC’s published rate as a general contractor carries it.

Published rate

−22%

ESC’s rate as a GC carries it, against the median public bid

ESC’s rate as a GC carries it is $171/SF −22% vs the median public bid, and below 72% of 118 public bids on 26 lettings (2019–2026).

  • Strong evidence: 26 lettings
  • Bids 2019 onward
  • New England and national agencies
  • Restated to 2026 dollars
  • Middle half of bids
  • Median bid
  • Typical low bid
  • ESC rate, as a GC carries it (gold rule: our low–high range)
ESC published rate
$155/SF
Range $125–210
As a GC carries it
$171/SF
Published rate +10% · $138–231
Median public bid
$217/SF
Recent lettings count more; each letting once
Middle half of bids
$156–263/SF
25th to 75th percentile
Typical low bid
$148/SF
Median of each pay line’s lowest bid
Pay lines where ESC is under even the lowest bid
9 of 26
ESC’s carried rate below every bid on the line

Price book note: Includes mobilization and PE design; excludes excavation, dewatering and rock.

This rate in the price book

01 · The field

Every public bid

Each dot is one bidder’s price on one public pay line for this work: 118 bids on 26 lettings, 2019–2026. Every price is restated to 2026 dollars and a typical job size, so it compares like for like with ESC’s published rate. Point at or focus a dot for its year, agency and rank; the other bids on its pay line are ringed.

  • Public bid
  • Older lettings fainter
  • Middle half of bids
  • Median bid
  • Typical low bid
  • ESC as a GC carries it (gold rule: low–high)

n = 118 bids · 26 lettings · 26 pay linesSource: public agency bid tabulations

Show all 118 bids

02 · Time

Over time

  • Public bid
  • Year’s weighted median
  • ESC as a GC carries it

Each dot is one bid, placed by the year its letting opened. Every price is restated to 2026 dollars and a typical job, so a price bid years ago and one bid last season compare like for like. Ink ticks: each year’s weighted median, where the year has at least 3 bids.

n = 118 bids · 7 years with bidsSource: public agency bid tabulations

Show the numbers

03 · Pay lines

Pay line by pay line

Every public pay line behind this rate. No bidder, project, contract or town is shown: a line is a year, an agency, a printed quantity, a count of bidders and prices.

ESC’s carried rate would have been the lowest price on 9 of 26 pay lines.

Every public pay line for Soil nail wall, complete, per SF of face (assembly), newest first: year, agency, printed quantity, bidders, and the lowest, median and highest bid restated to 2026 dollars, with where ESC’s rate as a GC carries it would have ranked.
YearAgencyQuantityBiddersLowMedianHighBids on the line against ESCESC would have ranked
2026NCDOT23,603 SF3$154$219$290#2of 4
2026NCDOT19,165 SF5$137$228$239#2of 6
2026NCDOT4,210 SF3$192$199$266#1of 4: the lowest price on the line
2026NCDOT1,440 SF3$219$241$268#1of 4: the lowest price on the line
2025NCDOT31,383 SF4$225$269$346#1of 5: the lowest price on the line
2025NCDOT7,717 SF5$132$204$226#2of 6
2025NCDOT3,440 SF12$65.38$184$243#6of 13
2025NCDOT1,405 SF9$121$196$377#3of 10
2024NCDOT14,175 SF3$177$184$200#1of 4: the lowest price on the line
2024TxDOT52,690 SF2$84.20$110$136#3of 3
2023NCDOT11,625 SF4$102$164$268#3of 5
2023NCDOT3,130 SF2$238$276$314#1of 3: the lowest price on the line

Newest first · 12 of 26 pay lines

Low, median and high are restated to 2026 dollars and a typical job; the quantity is as printed. The strip shows each bid on the line (dots), its median (ink tick) and ESC’s rate as a GC carries it (diamond), on one scale for every line. “ESC would have ranked” counts ESC as one more bidder on the line.

04 · Agencies

By agency

The same comparison inside each agency’s own lettings.

Soil nail wall, complete, per SF of face (assembly) by agency: lettings, bids, median bid, the field of bids against ESC’s rate as a GC carries it, ESC against the median and the weighted share of bids above ESC.
AgencyLettingsBidsMedian bid /SFField and ESCESC vs medianBids above ESC
All agencies26118$217−22%72%
North Carolina Department of TransportationNCDOT22106$220−22%81%
Texas Department of TransportationTxDOT412$112+52%0%
  • Middle half of bids
  • Median bid
  • ESC rate, as a GC carries it (gold rule: our low–high range)

Where these numbers come from

Basis

Soil nail wall, complete, per SF of face (assembly). 118 public bids on 26 lettings and 26 pay lines, from NCDOT and TxDOT (2019–2026). Every bid is restated to 2026 dollars and to a typical ESC job of 2,000 SF. A letting’s weight halves every 3 years, and each letting counts once, however many bidders it drew.

ESC’s rate is compared as a general contractor carries it: the published typical rate plus 10%, because a public pay line is the general contractor’s price, markup included.

Published by Earth Support Corp. from public agency bid tabulations. These are budget comparisons, not a quote or an offer: ESC quotes its earth-support scope to general contractors as a subcontractor, from your drawings.

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Rev 1 · valid through Dec 13, 2026

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