Bridge conditions in Strafford County, New Hampshire
136 inventoried bridges · 13 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 136 bridges in Strafford County: 82 rated good, 41 fair, and 13 poor.
- 13 of the 136 bridges in Strafford County, New Hampshire, are rated in poor condition (9.6%) in the 2025 National Bridge Inventory, as of .
- 82 bridges (60.3%) are rated good and 41 (30.1%) fair.
- The median Strafford County bridge was built in 1973.
- The busiest poor-rated bridge is Nh 16 Sp Tpk SB over Cocheco River (built 1957), carrying about 23,607 vehicles a day.
Good 60.3% · Fair 30.1% · Poor 9.6% of 136 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Nh 16 Sp Tpk SB over Cocheco River | 1957 | 23,607 | Poor |
| Nh 16 Sp Tpk NB over Cocheco River | 1957 | 22,560 | Poor |
| Nh 16 Sp Tpk NB over NH108 Csx(abd) | 1957 | 22,163 | Poor |
| Nh 16 Sp Tpk SB over NH108 Csx(abd) | 1957 | 21,323 | Poor |
| NH125 over Isinglass River | 1951 | 14,407 | Poor |
| US 4 over NH155A | 1968 | 13,387 | Poor |
| Oak Street over CSX | 1890 | 8,749 | Poor |
| Gulf Road over Salmon Falls River | 1950 | 6,132 | Poor |
| Cocheco Road over Cocheco River | 1953 | 1,773 | Poor |
| Spring Street over Cocheco River | 1926 | 770 | Poor |
| River Road over Mad River | 1986 | 110 | Poor |
| Townhouse Road over Northeast Pond | 1948 | 96 | Poor |
| Sheepboro Road over Berrys River | 1983 | 20 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Nh 16 Sp Tpk Ramp over NH125 | 2009 | 44,530 | Good |
| Nh 16 Sp Tpk over New Bellamy Lane | 1955 | 42,313 | Fair |
| US202 Nh 16 Sp Tpk over Ten Rod Road | 2012 | 41,600 | Good |
| US202 Nh 16 Sp Tpk over NH202A (walnut Street) | 1957 | 41,600 | Good |
| Nh 16 Sp Tpk over Cocheco River | 2010 | 39,653 | Good |
| Nh 16 Sp Tpk over Axehandle Brook | 1957 | 39,505 | Good |
| Nh 16 Sp Tpk over US202 | 2011 | 37,452 | Good |
| US 4 Nh 16 Tpk NB over Little Bay Rd | 1966 | 34,298 | Good |
| US 4 Nh 16 Tpk SB over Little Bay Rd | 2018 | 33,938 | Good |
| Indian Brook Drive over Nh 16 Sp Tpk | 1957 | 32,326 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of New Hampshire: New Hampshire bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.