Bridge conditions in Jerome County, Idaho
111 inventoried bridges · 10 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 111 bridges in Jerome County: 20 rated good, 81 fair, and 10 poor.
- 10 of the 111 bridges in Jerome County, Idaho, are rated in poor condition (9.0%) in the 2025 National Bridge Inventory, as of .
- 20 bridges (18.0%) are rated good and 81 (73.0%) fair.
- The median Jerome County bridge was built in 1969.
- The busiest poor-rated bridge is STC2744;1900 E. Rd over C Canal (built 1965), carrying about 660 vehicles a day.
Good 18.0% · Fair 73.0% · Poor 9.0% of 111 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 |
|---|---|---|---|
| STC2744;1900 E. Rd over C Canal | 1965 | 660 | Poor |
| Ridgeway Road over C Canal | 1963 | 450 | Poor |
| STC2768;2400 E. Rd over Milner Gooding Canal | 1970 | 330 | Poor |
| 200 East Road over T.f.northside Main Cnl | 1970 | 310 | Poor |
| Hunt Road over T.f.northside Main Cnl | 1960 | 310 | Poor |
| 1100 South Road over C Canal | 1975 | 200 | Poor |
| 990 South Road over C Canal | 1962 | 110 | Poor |
| Vinyard Road over I 84;VINYARD Rd Gs | 1965 | 70 | Poor |
| 2701: North Milner over Milner Gooding Canal | 1960 | 25 | Poor |
| Co. Rd.;old US 93 over U Canal | 1934 | 5 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 84 over N Canal | 1966 | 24,500 | Fair |
| I 84 over C Canal | 1966 | 23,000 | Fair |
| SH 79 over I 84 Eb-wb;s.jerome Ic | 1966 | 15,000 | Fair |
| I 84 Ebl over 400 South Rd Gs 2 | 2024 | 14,500 | Good |
| I 84 Wbl over 400 South Rd Gs 2 | 2024 | 14,500 | Good |
| I 84 Ebl over US 93;W. Twin Falls Ic | 2013 | 14,500 | Fair |
| I 84 Wbl over US 93;W.TWIN Falls Ic | 2003 | 14,500 | Fair |
| I 84 Ebl over J Coulee Canal | 1966 | 12,500 | Fair |
| I 84 Wbl over J Coulee Canal | 1954 | 12,500 | Fair |
| I 84 Ebl over Bodenheimer Road Gs | 1966 | 11,750 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Idaho: Idaho 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.