Earth Support Corp

Washington CountyVermont

Roxbury, Vermont

Bedrock sits a median 10 ft down across 258 logs, shallower than the Vermont median of 20 ft. 1 of its 10 inventoried bridges is rated poor (10%, against 4% statewide).

Median depth to bedrock

10 ft

middle half 5–25 ft · 258 logs

Bridges rated poor

1

of 10 inventoried

Mapped landslides

8

USGS inventory points

FEMA repair $, Washington County

$567M

federal share since 2010 · county-wide

01 · Ground

Rock is close to the surface: 57% of logs hit it within 10 ft

From 258 depth-to-rock records inside Roxbury (Vermont DEC well records). Logs cluster where people drill wells and bore for roads, so treat this as the town’s pattern, not a site answer.

Half of Roxbury's logs reach rock between 5 and 25 ft

Depth to bedrock: 10th–90th percentile whisker, middle-half box, median tick; dashed line = Vermont median.
median 10 ft
VT 20 ft
02040 ft
0204060800–5 ft5–10 ft10–20 ft20–50 ft50–100 ft100+ ft
n = 258 logsSource: Vermont DEC well records
▸ Show the numbers
Depth to rock (ft)Logs
0–544
5–1058
10–2071
20–5063
50–10012
100+10

Rock within 10 ft

57%

of logs (34% across Vermont). Shallow rock means ledge in excavations, refusal for driven piles and rock anchors rather than soil nails; deep ground means taller shoring and more groundwater. 7% of logs here go past 50 ft.

Mapped landslides

8

8 earth landslide. Inventory points from the USGS U.S. Landslide Inventory; many are prehistoric slides mapped from lidar.

02 · Bridges

1 of 10 bridges are rated poor — above the Vermont rate of 4%

Every highway bridge and large culvert in the 2025 National Bridge Inventory that stands inside Roxbury. Median age 66 years; 1 posted for weight.

50% good, 10% poor

FHWA good / fair / poor rating — the lowest of deck, superstructure, substructure or culvert.
  • Good5 · 50%
  • Fair4 · 40%
  • Poor1 · 10%
n = 10 structuresSource: FHWA National Bridge Inventory 2025
▸ Show the numbers
BuiltStructures
1910s2
1920s1
1930s1
1950s1
1960s1
1970s1
1990s1
2010s2

The poor-rated bridges

Bridges rated poor in Roxbury
CarriesOverBuiltDaily traffic
VT 0012A ALTFLINT BROOK1933400
Every poor bridge in New England

03 · Dams & disasters

Washington County has drawn $567M in federal disaster repair since 2010

FEMA Public Assistance is reported by county, so the figure below is Washington County-wide context, not a Roxbury number.

FEMA Public Assistance, Washington County

$567M

Federal share obligated across 1,643 projects in 26 declared disasters since 2010. The largest category is emergency protective measures (62%); roads & bridges took $87.9M.
Dams, disasters & moving ground

04 · Next door

Roxbury and the 5 towns that border it

A dash means no data for that layer, not zero.
Roxbury compared with neighbouring towns
TownPoor bridgesRock depth
Roxbury, VT1 / 1010 ft
Northfield, VT3 / 2910 ft
Granville, VT0 / 1612 ft
Warren, VT0 / 1217 ft
Brookfield, VT1 / 910 ft
Braintree, VT0 / 715 ft

Where these numbers come from

Method, sources & caveats

Roxbury is the Census county subdivision 5002360625 (Washington County). Every record is placed here by its coordinates, not by the place name the source uses.

  • Towns are Census county subdivisions: cities, towns, plantations, and Maine/New Hampshire unorganized territories and townships. Every record is placed in a town by its coordinates (point-in-polygon), not by the source's own place label — so a bridge in Roxbury counts for Boston and a well in 'North Waltham' counts for Waltham.
  • Bridges: FHWA NBI 2025, highway structures ≥ 20 ft including large culverts. 'Poor' is FHWA's good/fair/poor rating (lowest of deck, superstructure, substructure or culvert ≤ 4). Percent-poor is shown only for towns with at least 5 structures.
  • Depth to bedrock is the median of driller- and boring-reported depths in the town, shown only where at least 10 logs exist. Water-well logs over-sample rural lots and hilltops; one town median never describes a particular site.
  • Bedrock depths use the same state databases and filters as the Bedrock & soils module (bedrock wells and borings that reached rock, 0 < depth ≤ 400 ft, exact re-filings dropped), but every log is placed in a town by its coordinates rather than the driller's town field, so town counts can differ slightly between the two pages. Connecticut and Rhode Island have no statewide public well-log database with depths.
  • Dams: only high-hazard-potential dams whose latest condition assessment is Poor or Unsatisfactory are counted (live NID). Connecticut and Rhode Island assessments may lag.
  • FEMA Public Assistance dollars are federal share obligated for disasters declared since 2010, reported by county — they are county context, not a town figure.
  • Grant awards are Massachusetts only (EEA Dam & Seawall program, MVP Action grants, CZM Coastal Resilience). Other states' programs are not yet included.
  • Ground-related permit counts cover only the municipal portals the pipeline reads (Boston, Cambridge, Somerville, Worcester, Framingham, Providence, Portsmouth, Hartford and a few others) — an absent count means 'not covered', not zero.
Data as of
Sep 11, 2026
Generated
Sep 11, 2026
Records
367,748
Refresh
Live pull · weekly

Published by Earth Support Corp as a public resource. Regional statistics for planning and curiosity. They are not an engineering report, a bid recommendation or a statement about any particular site, firm or project. Spot an error? Tell us and we will correct it. Full method: methodology.

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