Earth Support Corp

Hillsborough CountyNew Hampshire

Hancock, New Hampshire

Bedrock sits a median 62 ft down across 196 logs, deeper than the New Hampshire median of 20 ft. 1 of its 12 inventoried bridges is rated poor (8%, against 8% statewide).

Median depth to bedrock

62 ft

middle half 22–116 ft · 196 logs

Bridges rated poor

1

of 12 inventoried

FEMA repair $, Hillsborough County

$39.7M

federal share since 2010 · county-wide

01 · Ground

Deep ground: 53% of logs go past 50 ft before rock

From 196 depth-to-rock records inside Hancock (NH DES well inventory). Logs cluster where people drill wells and bore for roads, so treat this as the town’s pattern, not a site answer.

Half of Hancock's logs reach rock between 22 and 116 ft

Depth to bedrock: 10th–90th percentile whisker, middle-half box, median tick; dashed line = New Hampshire median.
median 62 ft
NH 20 ft
050100150 ft
0204060800–5 ft5–10 ft10–20 ft20–50 ft50–100 ft100+ ft
n = 196 logsSource: NH DES well inventory
▸ Show the numbers
Depth to rock (ft)Logs
0–57
5–1012
10–2022
20–5050
50–10038
100+67

Rock within 10 ft

13%

of logs (31% across New Hampshire). 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. 53% of logs here go past 50 ft.
Bedrock & soils across New England

02 · Bridges

1 of 12 bridges are rated poor — about the same as the New Hampshire rate of 8%

Every highway bridge and large culvert in the 2025 National Bridge Inventory that stands inside Hancock. Median age 67 years; 2 posted for weight.

50% good, 8% poor

FHWA good / fair / poor rating — the lowest of deck, superstructure, substructure or culvert.
  • Good6 · 50%
  • Fair5 · 42%
  • Poor1 · 8%
n = 12 structuresSource: FHWA National Bridge Inventory 2025
▸ Show the numbers
BuiltStructures
1930s3
1950s4
1990s2
2000s2
2020s1

The poor-rated bridges

Bridges rated poor in Hancock
CarriesOverBuiltDaily traffic
WINDY ROW ROADpostedMCDOWELL RESERVOIR1950247
Every poor bridge in New England

03 · Dams & disasters

Hillsborough County has drawn $39.7M in federal disaster repair since 2010

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

FEMA Public Assistance, Hillsborough County

$39.7M

Federal share obligated across 415 projects in 10 declared disasters since 2010. The largest category is emergency protective measures (90%); roads & bridges took $1.8M.
Dams, disasters & moving ground

04 · Next door

Hancock and the 6 towns that border it

A dash means no data for that layer, not zero.
Hancock compared with neighbouring towns
TownPoor bridgesRock depth
Hancock, NH1 / 1262 ft
Peterborough, NH1 / 1675 ft
Antrim, NH1 / 1055 ft
Harrisville, NH2 / 730 ft
Nelson, NH0 / 618 ft
Bennington, NH1 / 546 ft
Greenfield, NH—55 ft

Where these numbers come from

Method, sources & caveats

Hancock is the Census county subdivision 3301133700 (Hillsborough 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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