Bridge conditions in Elmore County, Idaho
98 inventoried bridges · 8 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 98 bridges in Elmore County: 25 rated good, 65 fair, and 8 poor.
- 8 of the 98 bridges in Elmore County, Idaho, are rated in poor condition (8.2%) in the 2025 National Bridge Inventory, as of .
- 25 bridges (25.5%) are rated good and 65 (66.3%) fair.
- The median Elmore County bridge was built in 1973.
- The busiest poor-rated bridge is Morrow Reservior R over Little Canyon Creek (built 1995), carrying about 170 vehicles a day.
Good 25.5% · Fair 66.3% · Poor 8.2% of 98 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 |
|---|---|---|---|
| Morrow Reservior R over Little Canyon Creek | 1995 | 170 | Poor |
| Morrow Reservoir R over Little Canyon Creek | 1970 | 170 | Poor |
| Fall Ck.-rocky Bar over East Fork Fall Creek | 2013 | 50 | Poor |
| Fall Creek Rd over Fall Creek | 1987 | 30 | Poor |
| Stc 3809;MIDDLE Fk over Black Warrior Creek | 1975 | 30 | Poor |
| Stc 3809;MIDDLE Fk over Queens River No. 2 | 1962 | 30 | Poor |
| Stc 3809;MIDDLE Fk over M.fk.boise River(kirby) | 1991 | 30 | Poor |
| Roaring River Road over Middle Fork Boise River | 1957 | 20 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 84 Ebl over Squaw Creek | 1953 | 14,250 | Fair |
| I 84 Wbl over Squaw Creek | 1960 | 14,250 | Fair |
| I 84 Ebl over Canyon Creek | 1959 | 14,250 | Good |
| I 84 Wbl over Canyon Creek | 1959 | 14,250 | Fair |
| I 84 Wbl over US 20;N.MOUNTAIN Home Ic | 1971 | 10,750 | Fair |
| I 84 Ebl over US 20;N.MOUNTAIN Home Ic | 1971 | 10,750 | Fair |
| I 84 Ebl over Alkali Cr;alkali CR Gs | 1978 | 10,000 | Fair |
| I 84 Wbl over Alkali Cr;alkali CR Gs | 1978 | 10,000 | Fair |
| I 84 Wbl over I 84B;BANNOCK Ic | 1979 | 10,000 | Fair |
| I 84 Ebl over I 84B;BANNOCK Ic | 1979 | 10,000 | Good |
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.