Bridge conditions in Spokane County, Washington
309 inventoried bridges · 21 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Spokane County tracks close to typical: 21 of its 309 inventoried bridges (6.8%) are rated poor, against a national rate of about 7%.
- 21 of the 309 bridges in Spokane County, Washington, are rated in poor condition (6.8%) in the 2025 National Bridge Inventory, as of .
- 156 bridges (50.5%) are rated good and 132 (42.7%) fair.
- The median Spokane County bridge was built in 1973.
- The busiest poor-rated bridge is Sullivan Rd over SR 290 (trent Ave) (built 1960), carrying about 21,500 vehicles a day.
Good 50.5% · Fair 42.7% · Poor 6.8% of 309 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 |
|---|---|---|---|
| Sullivan Rd over SR 290 (trent Ave) | 1960 | 21,500 | Poor |
| Thor St over I-90 | 1957 | 19,798 | Poor |
| Greene Street over Spokane River Local Rds | 1955 | 17,869 | Poor |
| Sunset Boulevard over Latah Creek | 1913 | 14,995 | Poor |
| I-90 over Medical Lake Rd | 1966 | 11,409 | Poor |
| Sprague Avenue over Sprague Way SB | 1954 | 8,658 | Poor |
| SR 290 over 2ND Ave | 1974 | 7,681 | Poor |
| I-90 E-e Ramp over 3RD Ave & I-90 | 1970 | 7,572 | Poor |
| 1ST Avenue over Maple Street | 1958 | 6,261 | Poor |
| Riverside Avenue over Maple Street | 1958 | 6,261 | Poor |
| Arthur St over I-90 | 1970 | 6,150 | Poor |
| SR 902 over I-90 | 1965 | 6,040 | Poor |
| SR 27 over Rock Creek | 1957 | 5,713 | Poor |
| Colbert Road over Little Spokane River | 1953 | 2,306 | Poor |
| Cheney-spokane Rd over Up&bn RR & Marshall CR | 1949 | 2,238 | Poor |
| SR 902 over I-90 | 1966 | 1,759 | Poor |
| Lindeke St over I-90 | 1962 | 1,550 | Poor |
| Little Spokane Dr. over Little Spokane River | 1951 | 1,109 | Poor |
| SR 904 over I-90 | 1966 | 958 | Poor |
| Old State ROUTE195 over N Pine Creek Wir RR | 1929 | 888 | Poor |
| Starr Road over South Fork Rock Creek | 1959 | 16 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-90 over S Havana St | 1957 | 62,117 | Fair |
| I-90 over S Altamont St | 1957 | 58,628 | Good |
| I-90 over Sprague Ave | 2000 | 51,385 | Fair |
| I-90 over UPRR | 2000 | 51,385 | Good |
| I-90 over Sprague Ave | 2001 | 51,385 | Good |
| I-90 over UPRR | 2001 | 51,385 | Good |
| I-90 over City Streets | 1967 | 51,197 | Fair |
| I-90 over Viaduct Sta 1396 US 2 | 1967 | 51,197 | Fair |
| I-90 over 3RD Av & W-e Ramp | 1970 | 51,158 | Fair |
| US 2 over Spokane River | 1992 | 47,781 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Washington: Washington 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.