Somerset County Bridge Report Card
Somerset County scores 57 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Somerset County, New Jersey
Somerset County has 397 bridges in the National Bridge Inventory, with 34 rated poor and 31 rated scour-critical. Its poor-condition share of 8.6% is above the 5.8% statewide average. Poor-condition bridges carry about 588,869 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Somerset County a Bridge Condition Exposure Score of 57/100 (F). The county has 397 bridges in the National Bridge Inventory, including 34 in poor condition and 31 rated scour-critical. Poor-condition bridges carry about 588,869 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.
How the Score Breaks Down
| Factor | Weight | County Value | Penalty |
|---|---|---|---|
| Poor-condition bridge share | 40 | 8.6% | 17.1 |
| Poor-condition traffic exposure | 25 | 9.4% of measured traffic | 7.0 |
| Scour-critical bridge share | 20 | 7.8% | 15.6 |
| Average age vs national baseline | 10 | 56 years vs 48 nationally | 3.3 |
| Traffic-data completeness | 5 | 6,274,689 measured daily crossings | 0.0 |
Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.
County Comparisons
| County Poor-Condition Share | 8.6% |
| State Poor-Condition Share | 5.8% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 7.8% |
| Average Bridge Age | 56 years |
| Poor-Condition Traffic Exposure | 588,869 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Somerset County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Route Nj 28 over Cuckles Brook | Poor condition + traffic exposure | Poor | 25,789 | 1962 |
| Readington Road over Chambers Brook | Poor condition + traffic exposure | Poor | 8,509 | 1930 |
| US 202 over N Branch Raritan River | Poor condition + traffic exposure | Poor | 6,913 | 1922 |
| Davenport Street over Peters Brook | Poor condition + traffic exposure | Poor | 1,983 | 1905 |
| Meadow Road over Chambers Brook | Poor condition + traffic exposure | Poor | 781 | 2023 |
| I-78 Eastbound over I-78 Ramp "a" | Poor condition + traffic exposure | Poor | 60,048 | 1963 |
| I-78 Westbound over US 202-206 | Poor condition + traffic exposure | Poor | 56,615 | 1964 |
| I-78 Westbound over Tributary Of Dead River | Poor condition + traffic exposure | Poor | 50,135 | 1965 |
| I-78 EB over US 202 & 206 | Poor condition + traffic exposure | Poor | 44,922 | 1965 |
| I-78 WB over Washing Valley Rd(cr620) | Poor condition + traffic exposure | Poor | 42,420 | 1965 |
Important safety note
Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.