Jerome County Bridge Report Card
Jerome County scores 81 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Jerome County, Idaho
Jerome County has 111 bridges in the National Bridge Inventory, with 10 rated poor and 0 rated scour-critical. Its poor-condition share of 9.0% is above the 5.4% statewide average. Poor-condition bridges carry about 2,470 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Jerome County a Bridge Condition Exposure Score of 81/100 (B). The county has 111 bridges in the National Bridge Inventory, including 10 in poor condition and 0 rated scour-critical. Poor-condition bridges carry about 2,470 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 | 9.0% | 18.0 |
| Poor-condition traffic exposure | 25 | 0.5% of measured traffic | 0.4 |
| Scour-critical bridge share | 20 | 0.0% | 0.0 |
| Average age vs national baseline | 10 | 50 years vs 48 nationally | 0.7 |
| Traffic-data completeness | 5 | 451,925 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 | 9.0% |
| State Poor-Condition Share | 5.4% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.0% |
| Average Bridge Age | 50 years |
| Poor-Condition Traffic Exposure | 2,470 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Jerome County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Stc2744;1900 E. RD over C Canal | Poor condition + traffic exposure | Poor | 660 | 1965 |
| Ridgeway Road over C Canal | Poor condition + traffic exposure | Poor | 450 | 1963 |
| Stc2768;2400 E. RD over Milner Gooding Canal | Poor condition + traffic exposure | Poor | 330 | 1970 |
| Hunt Road over T.f.northside Main Cnl | Poor condition + traffic exposure | Poor | 310 | 1960 |
| 200 East Road over T.f.northside Main Cnl | Poor condition + traffic exposure | Poor | 310 | 1970 |
| 1100 South Road over C Canal | Poor condition + traffic exposure | Poor | 200 | 1975 |
| 990 South Road over C Canal | Poor condition + traffic exposure | Poor | 110 | 1962 |
| Vinyard Road over I 84;vinyard RD Gs | Poor condition + traffic exposure | Poor | 70 | 1965 |
| 2701: North Milner over Milner Gooding Canal | Poor condition + traffic exposure | Poor | 25 | 1960 |
| Co. Rd.;old US 93 over U Canal | Poor condition + traffic exposure | Poor | 5 | 1934 |
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.