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Bridge conditions in Los Angeles County, California

3,549 inventoried bridges · 94 rated poor · 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

The federal inventory lists 3,549 bridges in Los Angeles County: 2,203 rated good, 1,252 fair, and 94 poor.

94 of the 3,549 bridges in Los Angeles County, California, are rated in poor condition (2.6%) in the 2025 National Bridge Inventory, as of August 20, 2026.
2,203 bridges (62.1%) are rated good and 1,252 (35.3%) fair.
The median Los Angeles County bridge was built in 1965.
The busiest poor-rated bridge is Interstate 110 over Slauson Ave & BNSF Ry (built 1996), carrying about 300,000 vehicles a day.

Good 62.1% · Fair 35.3% · Poor 2.6% of 3,549 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 110 over Slauson Ave & BNSF Ry	1996	300,000	Poor
U.S. Highway 101 over Kester Ave	1959	293,000	Poor
Interstate 405 over Vermont Ave 190TH St	1962	269,000	Poor
State Route 134 over Pacific Ave	1967	240,000	Poor
Rte 110 over Torrance Blvd	1962	218,000	Poor
Route 105 & Lrt over Wright Road	1993	217,000	Poor
U.S. Highway 101 over Argyle Av & Franklin Av	1953	175,000	Poor
US Highway 101 SB over Highland-nb 101 on Ramp	1954	145,500	Poor
Interstate 210 over Big Tujunga Wash	1980	113,000	Poor
Valley Blvd over San Gabriel Riv	1916	60,420	Poor
State Route 47 over San Pedro Terminal Isl	1963	58,000	Poor
Fremont Ave over UPRR	1979	51,262	Poor
2ND St over Marine Stad / Appian	1955	45,571	Poor
Hacienda Blvd over Hacienda Blvd Oh Sptco	1964	42,238	Poor
Nogales St over San Jose Crk	1968	40,898	Poor
Valley Blvd over Nogales St	2005	40,898	Poor
Studebaker Rd N/B over S C Edison N Chan	1966	38,584	Poor
Valley Blvd over Sp/up RR	1957	38,160	Poor
Rosecrans Ave over Alameda St	1992	37,842	Poor
State Route 126 over Castaic Creek	1989	37,500	Poor
Azusa Ave over Big Dalton Wash	1941	35,490	Poor
Atlantic Blvd over UPRR	1979	35,177	Poor
Slauson Ave over Los Angeles Riv	1942	34,736	Poor
Garfield Ave over UPRR	1979	34,511	Poor
Washington Blvd over Rio Hondo	1941	33,974	Poor
Wilmington Av 223 over Dominguez Chan	1963	33,600	Poor
Santa Anita Ave over Rio Hondo	1959	32,849	Poor
Francisquito Ave over Walnut Crk	1958	31,805	Poor
the Old Rd over Santa Clara Riv	1928	30,894	Poor
Irwindale Ave over Metro / Avienda Padilla	1968	30,891	Poor
Lower Azusa Rd over Arcadia Wash	1959	30,816	Poor
Avenue of the Star over Olympic Blvd	1963	30,223	Poor
Wilmington Ave over Compton Crk	1938	29,520	Poor
Gage Ave over Los Angeles Riv	1940	27,454	Poor
Compton Blvd over Compton Crk	1938	27,136	Poor
Valley Blvd over Rubio Wash	1926	27,122	Poor
E91-n605 Connector over 605 & W91-s605 Conn	1966	27,000	Poor
Valley Blvd over Eaton Wash	1956	26,536	Poor
Seventh Ave over San Jose Crk Chan	1967	26,484	Poor
Olympic Blvd over Route 5	1951	25,800	Poor
Artesia Blvd over UPRR / Metrolink	1974	25,440	Poor
Artesia Blvd over UPRR Compton CR Alameda	1956	25,440	Poor
Live Oak Ave over San Gabriel Riv	1961	25,359	Poor
Telegraph Rd over Rio Hondo Riv	1951	24,717	Poor
Live Oak Ave over Saw Pit Wash	1952	24,644	Poor
Brea Cyn Rd over San Jose Crk	1968	23,929	Poor
Puente Ave over Walnut Crk	1961	23,730	Poor
Garvey Ave over Rio Hondo Riv	2008	23,520	Poor
El Segundo Blvd over Compton Crk	1948	23,426	Poor
Atlantic Ave over Los Angeles Riv	1937	23,298	Poor
W91-s710 W91-n710 over I 710 N710-w91 E91-n710	1971	22,100	Poor
San Fernando Rd over Tujunga Wash	1935	21,500	Poor
Malibu Cyn Rd over Malibu Crk	1953	20,753	Poor
Del Amo Blvd over Alameda St	2002	20,699	Poor
Wilton Place over Route 101	1951	20,000	Poor
Lemon Ave over San Jose Crk	1968	19,603	Poor
Stimson Ave over San Jose Crk	1967	18,869	Poor
Walnut Grove Ave over Alhambra Wash	1937	17,934	Poor
State Route 1 over Trancas Creek	1927	17,100	Poor
State Route 103 over UP RR & N103-ford Av Off	1947	14,427	Poor
Marengo Ave over UPRR	1979	14,009	Poor
Temple City Blvd over Eaton Wash	1956	13,481	Poor
Azusa Ave over Little Dalton Wash	1959	13,433	Poor
Badillo St over Big Dalton Wash	1959	13,081	Poor
Duarte Rd over Eaton Wash	1989	12,063	Poor
Suva St over Rio Hondo	1954	11,589	Poor
the Old Rd over Castaic Crk	1931	11,505	Poor
El Segundo Blvd over Acta	2000	11,268	Poor
Alameda St over Compton Crk	1937	10,710	Poor
Ramona Blvd over Big Dalton Wash	1959	8,207	Poor
Holly St over Arroyo Blvd / Arroyo S	1925	7,453	Poor
Longden Ave over Santa Anita Wash	1959	6,901	Poor
Route 14 over Via Princessa	1972	6,500	Poor
Ave 36 Oc over Route 2	1976	6,300	Poor
Anaheim-puente Rd over San Jose Crk	1967	4,705	Poor
Sierra Hwy over Unnamed Wash	1921	3,838	Poor
Soledad Cyn Rd over Lacmta and Scrra Track	1938	3,162	Poor
College Park Dr over San Gabriel Riv	1964	2,958	Poor
Old Topanga Cyn Rd over Red Rock Crk	1936	2,712	Poor
Soledad Cyn Rd over Santa Clara Riv Br	1936	2,550	Poor
124TH St over Acta	2000	2,336	Poor
Parriot Pl over San Jose Crk	1964	2,244	Poor
Puente Ave over Big Dalton Wash	1959	2,137	Poor
Garibaldi Ave over Eaton Wash	1953	918	Poor
Oak Dr over Old Topanga Crk	1928	870	Poor
Colorado Ave over Appian Way / Promenade	1939	727	Poor
Queens Way S over Queensway Dr / La Riv	1969	612	Poor
Access Rd City Yds over Alhambra Wash	1969	505	Poor
W10 & E10 Busways over Rio Hondo River	1972	500	Poor
Crossroads Pkwy N over Uppr	1983	459	Poor
Sycamore Pl over Sierra Madre Wash	1928	408	Poor
Circle Trail over Topanga Cyn Crk	1936	204	Poor
Water St over San Jose CR	1967	184	Poor
Gorge Rd over Las Flores Crk	1945	102	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
State Route 60 over Prospectors Road	1970	339,000	Good
Route 60 over E60-n57 Connector Ramp	1970	339,000	Good
Interstate 110 over Washington Blvd	1954	300,000	Good
Interstate 110 over 37TH Street	1996	300,000	Good
Interstate 110 over Martin Luther King Jr Bl	1956	300,000	Good
Interstate 110 over Slauson Ave & BNSF Ry	1996	300,000	Poor
Interstate 110 over 59TH Place	1956	300,000	Fair
Interstate 110 over Gage Ave	1956	300,000	Good
Interstate 110 over 67TH Street	1956	300,000	Good
Interstate 110 over Florence Ave	1956	300,000	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.