Bridge conditions in Riverside County, California
1,120 inventoried bridges · 18 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Riverside County tracks close to typical: 18 of its 1,120 inventoried bridges (1.6%) are rated poor, against a national rate of about 7%.
- 18 of the 1,120 bridges in Riverside County, California, are rated in poor condition (1.6%) in the 2025 National Bridge Inventory, as of .
- 640 bridges (57.1%) are rated good and 462 (41.2%) fair.
- The median Riverside County bridge was built in 1975.
- The busiest poor-rated bridge is Interstate 10 WB over Thousand Palms Wash (built 1972), carrying about 33,000 vehicles a day.
Good 57.1% · Fair 41.2% · Poor 1.6% of 1,120 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 |
|---|---|---|---|
| Interstate 10 WB over Thousand Palms Wash | 1972 | 33,000 | Poor |
| Interstate 10 EB over Thousand Palms Wash | 1972 | 33,000 | Poor |
| Route 74 over Lake Elsinore Outlt Chnl | 1994 | 29,580 | Poor |
| Monroe Street over Whitewater River | 1972 | 22,400 | Poor |
| State Route 86 SB over Memel Ditch | 1989 | 15,300 | Poor |
| State Route 86 NB over Memel Ditch | 1979 | 15,300 | Poor |
| State Route 86 SB over Cophy Ditch | 1989 | 15,300 | Poor |
| State Route 86 NB over Cophy Ditch | 1979 | 15,300 | Poor |
| State Route 86 SB over Otan Ditch | 1989 | 15,300 | Poor |
| Interstate 10 EB over Coachella Canal | 1947 | 11,250 | Poor |
| State Route 62 WB over Mission Channel Overflow | 1966 | 9,000 | Poor |
| Dillon Road over Whitewater River | 1950 | 8,700 | Poor |
| State Route 111 over Fir Ditch | 1951 | 5,500 | Poor |
| Grapefruit Blvd over Whitewater River | 1970 | 5,074 | Poor |
| Auburndale Street over Temescal Creek | 1981 | 4,000 | Poor |
| Railroad Ave over Fornat Wash | 1934 | 240 | Poor |
| Chuckwalla Vly Rd over Tarantula Ditch | 1931 | 40 | Poor |
| Chuckwalla Vly Rd over Acari Ditch | 1931 | 40 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| State Route 91 over BNSF Ry Amtrak Metrolink | 1970 | 270,000 | Fair |
| State Route 91 over Serfas Drive | 1970 | 269,000 | Good |
| Route 91 over Buena Vista Avenue | 1961 | 268,000 | Fair |
| State Route 91 over E91-n71 Connctr (future) | 1970 | 267,000 | Good |
| State Route 91 over Coal Canyon | 1970 | 264,000 | Good |
| State Route 91 over State Route 71 | 1970 | 264,000 | Good |
| State Route 91 over BNSF Ry Amtrak Metrolink | 1970 | 264,000 | Good |
| State Route 91 over Wardlow Wash | 1970 | 264,000 | Good |
| State Route 91 over West Grand Blvd | 1961 | 261,000 | Good |
| State Route 91 over Main Street | 2017 | 259,000 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of California: California 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.