Poor Condition Bridges in California
1,284 bridges rated Poor condition in California. FHWA National Bridge Inventory.
Bridges Rated Poor Condition
A bridge is rated Poor when one or more of its major components (deck, superstructure, or substructure) has a condition rating of 4 or below on the FHWA 0–9 scale. Poor condition does not mean imminent danger of collapse, but indicates significant deterioration requiring priority maintenance or replacement. There are 1,284 such bridges in California.
| Bridge | State | Condition | Year Built | ADT | Length |
|---|---|---|---|---|---|
| SANTA ROSA CREEK | California | 2008 | 6,000 | 27.2 m | |
| TULE RIVER | California | 1958 | 6,000 | 88.1 m | |
| HARKINS SLOUGH | California | 1950 | 6,000 | 7.9 m | |
| DEEP WATER CANAL & RR | California | 1997 | 6,000 | 164.8 m | |
| WATSONVILLE SLOUGH | California | 1941 | 6,000 | 27.4 m | |
| POOL CREEK | California | 1967 | 5,900 | 26.5 m | |
| SR 20 UP RR BNSF AMTRAK | California | 1963 | 5,875 | 156.4 m | |
| SR 20 UP RR BNSF AMTRAK | California | 1963 | 5,875 | 136.6 m | |
| HOUGHTON CANAL | California | 1925 | 5,867 | 8.2 m | |
| T.I.D. LOWER LATERAL #4 | California | 1925 | 5,844 | 7.0 m | |
| EAST TWIN CREEK CHANNEL | California | 1961 | 5,814 | 16.5 m | |
| SAN RAMON CREEK | California | 1959 | 5,800 | 25.0 m | |
| CLEAR CREEK | California | 1931 | 5,673 | 10.0 m | |
| JEWETT CREEK | California | 1968 | 5,576 | 24.6 m | |
| ROUTE I 280 | California | 1963 | 5,512 | 55.6 m | |
| FIR DITCH | California | 1951 | 5,500 | 11.6 m | |
| RODMAN NARROWS(CLEAR LAK | California | 1958 | 5,315 | 95.4 m | |
| TWIN WARM CREEK | California | 1960 | 5,300 | 21.3 m | |
| DUCK CREEK | California | 1968 | 5,300 | 20.6 m | |
| SAN TOMAS AQUINO CREEK | California | 1973 | 5,291 | 42.1 m | |
| SAN TOMAS AQUINO CREEK | California | 1966 | 5,269 | 34.4 m | |
| DELTA-MENDOTA CANAL | California | 1948 | 5,100 | 37.5 m | |
| WHITEWATER RIVER | California | 1970 | 5,074 | 138.1 m | |
| DEAN CRK RD & DEAN CREEK | California | 1967 | 5,000 | 113.7 m | |
| SANTA MARIA RIVER | California | 1955 | 5,000 | 366.7 m | |
| WATSONVILLE SLOUGH | California | 2017 | 5,000 | 30.5 m | |
| MATADERO CREEK | California | 1989 | 5,000 | 11.4 m | |
| INTERSTATE 5 | California | 1969 | 5,000 | 106.5 m | |
| INTERSTATE 5 | California | 1973 | 5,000 | 93.0 m | |
| INTERSTATE 5 | California | 1970 | 5,000 | 73.2 m | |
| U.S. HIGHWAY 50 | California | 1961 | 5,000 | 49.4 m | |
| US 101 I 380 EB CON RMPS | California | 1976 | 5,000 | 891.5 m | |
| KINGS CREEK | California | 1927 | 5,000 | 26.8 m | |
| ARROYO DEL HAMBRE | California | 1955 | 4,900 | 13.7 m | |
| T.I.D. MAIN CANAL | California | 1924 | 4,874 | 24.4 m | |
| MAD RIVER | California | 1965 | 4,775 | 157.9 m | |
| SAN JOSE CRK | California | 1967 | 4,705 | 39.9 m | |
| RESERVATION MAIN DRAIN | California | 1977 | 4,700 | 24.7 m | |
| STATE ROUTE 99 | California | 1962 | 4,700 | 87.5 m | |
| ORRS CREEK | California | 1972 | 4,692 | 18.9 m | |
| M.I.D. LATERAL #7 | California | 1925 | 4,684 | 10.2 m | |
| MILES CREEK | California | 1928 | 4,650 | 7.3 m | |
| UP RR BNSF RY AMTRAK 2ND | California | 1958 | 4,620 | 165.8 m | |
| WALKER SLOUGH | California | 1971 | 4,600 | 36.0 m | |
| BRANCH CANYON | California | 1943 | 4,500 | 17.1 m | |
| MORMON SLOUGH | California | 1957 | 4,500 | 24.4 m | |
| CALIFORNIA AQUEDUCT | California | 1967 | 4,403 | 47.2 m | |
| SR 99 | California | 1958 | 4,380 | 68.9 m | |
| LOMA ALTA CREEK | California | 1985 | 4,320 | 18.2 m | |
| NORTH LITTLE JOHNS CREEK | California | 1972 | 4,300 | 20.7 m |
About Poor Condition Bridge Ratings
FHWA rates bridge components on a 0–9 scale. A rating of 4 or below on any major component (deck, superstructure, substructure) classifies the bridge as Poor condition. The bridge remains open to traffic but requires priority attention. Bridges rated 0–2 are immediately closed.