Bridge Safety in California
25,975 bridges — 1,284 Poor condition — avg age 55 years.
Bridge Inventory
| Total Bridges | 25,975 |
| Good Condition | 12,239 |
| Fair Condition | 12,452 |
| Poor Condition | 1,284 |
| Oldest Bridge | Built 1860 |
| Average Age | 55 years |
Condition Summary
| % Good | 47.1% |
| % Fair | 47.9% |
| % Poor | 4.9% |
Highest-Traffic Poor Condition Bridges in California
Poor condition bridges sorted by daily traffic — the most urgent safety concerns.
| Bridge | Condition | Year Built | ADT | Length |
|---|---|---|---|---|
| SLAUSON AVE & BNSF RY | Poor | 1996 | 300,000 | — |
| KESTER AVE | Poor | 1959 | 293,000 | — |
| VERMONT AVE 190TH ST | Poor | 1962 | 269,000 | — |
| TELEGRAPH CANYON DRAIN | Poor | 1971 | 250,000 | — |
| PACIFIC AVE | Poor | 1967 | 240,000 | — |
| MONUMENT BOULEVARD | Poor | 1998 | 235,000 | — |
| CESAR CHAVEZ BLVD | Poor | 1951 | 234,000 | — |
| LINCOLN AVE | Poor | 1961 | 227,000 | — |
| CRANDALL CREEK | Poor | 1958 | 225,000 | — |
| TORRANCE BLVD | Poor | 1962 | 218,000 | — |
| WRIGHT ROAD | Poor | 1993 | 217,000 | — |
| SUISUN CREEK | Poor | 1932 | 202,000 | — |
| RTE 163 CONNECTORS | Poor | 1961 | 199,000 | — |
| PATTERSON SLOUGH | Poor | 1957 | 198,000 | — |
| CORDILLERAS CREEK | Poor | 1930 | 195,000 | — |
| LAUREL DRIVE | Poor | 1964 | 192,200 | — |
| GREEN VALLEY CREEK | Poor | 1928 | 189,000 | — |
| STATE ROUTE 4 & RAMPS | Poor | 1958 | 179,000 | — |
| EL PORTAL DRIVE | Poor | 1956 | 179,000 | — |
| SOUTHGATE AVENUE | Poor | 1967 | 178,000 | — |
Oldest Bridges in California
| Bridge | Condition | Year Built | Age | ADT |
|---|---|---|---|---|
| OREGON CREEK | Good | 1860 | 166 yrs | 60 |
| NAPA CREEK | Fair | 1860 | 166 yrs | 5,972 |
| BURGER CREEK | Fair | 1888 | 138 yrs | 137 |
| WORKMAN WASH | Fair | 1890 | 136 yrs | 146 |
| MISSION CREEK | Fair | 1891 | 135 yrs | 10,600 |
| NAPA RIVER | Fair | 1894 | 132 yrs | 2,790 |
| SOUTH YUBA RIVER | Fair | 1895 | 131 yrs | 71 |
| IRWIN CREEK | Good | 1895 | 131 yrs | 129,000 |
| CARNEROS CREEK | Fair | 1896 | 130 yrs | 1,959 |
| MIDDLE CREEK | Fair | 1900 | 126 yrs | 135 |
Bridge Safety in California
Bridge condition data for California comes from the FHWA National Bridge Inventory. All publicly accessible bridges with a span over 20 feet are inspected at least every 24 months by certified bridge inspectors.