Bridge conditions in Benton County, Washington
167 inventoried bridges · 11 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 167 bridges in Benton County: 95 rated good, 61 fair, and 11 poor.
- 11 of the 167 bridges in Benton County, Washington, are rated in poor condition (6.6%) in the 2025 National Bridge Inventory, as of .
- 95 bridges (56.9%) are rated good and 61 (36.5%) fair.
- The median Benton County bridge was built in 1980.
- The busiest poor-rated bridge is Washington Street over Cid Canal (built 1971), carrying about 12,416 vehicles a day.
Good 56.9% · Fair 36.5% · Poor 6.6% of 167 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 |
|---|---|---|---|
| Washington Street over Cid Canal | 1971 | 12,416 | Poor |
| I-82 over Bn Ry | 1973 | 12,139 | Poor |
| I-82 over Chandler Canal | 1977 | 11,211 | Poor |
| I-82 over Yakima River | 1977 | 11,211 | Poor |
| I-82 over Yakima River | 1977 | 11,211 | Poor |
| Gap Road over I-82 | 1978 | 6,869 | Poor |
| SR 24 over Columbia River | 1965 | 5,506 | Poor |
| Canal Drive over Cid Canal | 1964 | 5,206 | Poor |
| Columbia Dr over Drain Ditch | 1944 | 2,350 | Poor |
| SR 14 over Glade Creek | 1961 | 1,552 | Poor |
| Oak Street over Cid Canal | 1958 | 1,003 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 240 over Wetland | 2007 | 39,496 | Good |
| I-182 over Columbia R City Streets | 1984 | 36,943 | Fair |
| I-182 over Columbia River | 1984 | 36,943 | Fair |
| C.c.b. over C.i.d. Canal | 1970 | 36,358 | Fair |
| US 395 over Columbia R-riverside Dr | 1954 | 34,219 | Fair |
| I-182 over Yakima River | 1983 | 30,551 | Good |
| I-182 over Yakima River | 1983 | 30,551 | Good |
| Columbia Ctr. Blvd over BNSF RR | 2004 | 26,932 | Fair |
| US 395 over Np UPRR & Columbia Canal | 1956 | 25,140 | Fair |
| US 395 over Canal Drive | 1956 | 25,140 | Fair |
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.