Total Bridges
27,040
Public highway bridges in California
State profile · Below national median SD
California bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in California — drawn straight from the FHWA National Bridge Inventory.
- 27,040
- Public bridges
- 32.5%
- Good condition
- 4.6%
- Poor condition
- 4.6%
- Structurally deficient
Good Condition
32.5%
8,777 bridges rated 7-9
-17.5pp vs 50% benchmark
Poor Condition
4.6%
1,244 bridges rated 0-4
Structurally Deficient
4.6%
1,244 bridges flagged for repair priority
-2.4pp vs national avg 7.0%
California vs national bridge condition
California — Good condition share 32.5%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
California — Structurally deficient share 15.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Bridge inventory deck-condition mix — California (FHWA NBI)
Counties (58)
Alameda 800 Alpine 32 Amador 62 Butte 441 Calaveras 106 Colusa 211 Contra Costa 686 Del Norte 96 El Dorado 196 Fresno 929 Glenn 242 Humboldt 398 Imperial 448 Inyo 67 Kern 686 Kings 168 Lake 129 Lassen 108 Los Angeles 3937 Madera 250 Marin 217 Mariposa 109 Mendocino 357 Merced 532 Modoc 87 Mono 49 Monterey 390 Napa 160 Nevada 135 Orange 1224 Placer 347 Plumas 170 Riverside 1142 Sacramento 775 San Benito 76 San Bernardino 1465 San Diego 1707 San Francisco 170 San Joaquin 666 San Luis Obispo 408 San Mateo 393 Santa Barbara 429 Santa Clara 1041 Santa Cruz 203 Shasta 500 Sierra 65 Siskiyou 423 Solano 383 Sonoma 613 Stanislaus 390 Sutter 120 Tehama 452 Trinity 194 Tulare 599 Tuolumne 128 Ventura 511 Yolo 282 Yuba 136
California vs nearby ranks
Adjacent states on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below California on the same metric.
39
Ohio
4.54% top marginal rate
34
New Jersey
4.59% top marginal rate
06
California
4.60% top marginal rate
05
Arkansas
4.71% top marginal rate
53
Washington
4.81% top marginal rate
Bridges Needing Most Attention in California
Six lowest-condition bridges in California, ranked by composite NBI rating. Each is inspected at least every 24 months.
SPRING CREEK RD
PoorOver: FALL RIVER
0.5 MI N OF MCARTHUR RD, Shasta, CA
Built 1950 Load: 2.7 t ADT: 50
ORESTIMBA ROAD
PoorOver: CCID MAIN CANAL
0.1 MI E DRAPER RD, Stanislaus, CA
Built 1919 Load: 2.9 t ADT: 684
CLARK STREET
PoorOver: M.I.D. CANAL
0.1 MI WEST OF ROAD 26.0, Madera, CA
Built 1955 Load: 3.2 t ADT: 200
GULLING STREET
Structurally DeficientOver: MIDDLE FORK FEATHER RIV
0.2 MI S SH 70, Plumas, CA
Built 1954 Load: 3.2 t ADT: 10,046
AVENUE 10
PoorOver: COTTONWOOD CREEK
JUST E/O ROAD 23, Madera, CA
Built 1950 Load: 3.6 t ADT: 50
S BISHOP AVE
PoorOver: CRESCENT DITCH
0.64 MI S/O MT WHITNEY AV, Fresno, CA
Built 1950 Load: 3.9 t ADT: 125
All Bridges in California
STATE ROUTE 92
GoodOver: UP RR
04-ALA-092-R4.91-HAY, Alameda, CA
Built 1966 Load: 32.4 t ADT: 92,000
STATE ROUTE 185
GoodOver: ARROYO VIEJO
04-ALA-185-8.64-OAK, Alameda, CA
Built 1969 Load: 32.4 t ADT: 25,000
S13-BROADWAY TERR
GoodOver: LAKE TEMESCAL PARK ROAD
04-ALA-013-R9.16-OAK, Alameda, CA
Built 1951 Load: 32.4 t ADT: 5,000
INTERSTATE 580
GoodOver: MIDWAY ROAD
04-ALA-580-L0.92L, Alameda, CA
Built 1953 Load: 32.4 t ADT: 176,000
INTERSTATE 580 EB
GoodOver: EDEN CANYON ROAD
04-ALA-580-R26.23, Alameda, CA
Built 1986 Load: 32.4 t ADT: 98,500
INTERSTATE 580 WB
GoodOver: EDEN CANYON ROAD
04-ALA-580-R26.23, Alameda, CA
Built 1986 Load: 32.4 t ADT: 98,500
INTERSTATE 580 EB
GoodOver: CROW CREEK
04-ALA-580-R28.57, Alameda, CA
Built 1988 Load: 32.4 t ADT: 98,500
INTERSTATE 880
GoodOver: ORA LOMA DITCH
04-ALA-880-20.95-SLN, Alameda, CA
Built 1951 Load: 32.4 t ADT: 219,000
INTERSTATE 880
GoodOver: SCOTT CREEK
04-ALA-880-R0.26-FMT, Alameda, CA
Built 1952 Load: 32.4 t ADT: 162,000
S880-MOWRY AVE OFF
GoodOver: HETCH HETCHY AQUEDUCT
04-ALA-880-7.34-NWK, Alameda, CA
Built 1994 Load: 32.4 t ADT: 18,200
INTERSTATE 680
GoodOver: VARGAS ROAD
04-ALA-680-R7.48-FMT, Alameda, CA
Built 1963 Load: 32.4 t ADT: 142,000
RAMP/CONNECTOR 980
GoodOver: 30TH STREET
04-ALA-980-1.68-OAK, Alameda, CA
Built 1969 Load: 32.4 t ADT: 54,000
INTERSTATE 680 NB
GoodOver: KOOPMAN ROAD
04-ALA-680-R12.44, Alameda, CA
Built 1967 Load: 32.4 t ADT: 59,000
STATE ROUTE 24 WB
GoodOver: BARTD
04-ALA-024-R2.50-OAK, Alameda, CA
Built 1969 Load: 32.4 t ADT: 75,500
STATE ROUTE 24 WB
GoodOver: BARTD (@GOLDEN GATE AVE)
04-ALA-024-R4.38-OAK, Alameda, CA
Built 1970 Load: 32.4 t ADT: 143,000
INTERSTATE 580
GoodOver: DOUGHERTY DRAIN
04-ALA-580-19.62-PLE, Alameda, CA
Built 1970 Load: 32.4 t ADT: 254,000
INTERSTATE 580
GoodOver: CHABOT CANAL
04-ALA-580-19.72-PLE, Alameda, CA
Built 1994 Load: 32.4 t ADT: 254,000
N880-E980 CONNECTR
GoodOver: 6TH,7TH,MLK,& CASTRO ST
04-ALA-880-R31.82-OAK, Alameda, CA
Built 1985 Load: 32.4 t ADT: 67,500
INTERSTATE 580
GoodOver: COLLIER CANYON CREEK
04-ALA-580-14.44, Alameda, CA
Built 1972 Load: 32.4 t ADT: 208,000
STATE ROUTE 84 WB
GoodOver: UP RR
04-ALA-084-R4.66-NWK, Alameda, CA
Built 1983 Load: 32.4 t ADT: 46,500
STATE ROUTE 84 EB
GoodOver: UP RR
04-ALA-084-R4.66-NWK, Alameda, CA
Built 1983 Load: 32.4 t ADT: 66,000
S880-W GRAND OFFRP
GoodOver: UP RR,BNSF RY,AMTRAK,POR
04-ALA-880-R34.50L, Alameda, CA
Built 1994 Load: 32.4 t ADT: 5,000
I 80 HOV WB
GoodOver: RADIO STATION ROAD
04-ALA-080-2.39-OAK, Alameda, CA
Built 1997 Load: 32.4 t ADT: 20,000
STATE ROUTE 238 NB
GoodOver: BARTD
04-ALA-238-15.30-SLN, Alameda, CA
Built 1994 Load: 32.4 t ADT: 38,000
MARITIME-E80 ON RP
GoodOver: POR & ENGINEER ROAD
04-ALA-080-2.55-OAK, Alameda, CA
Built 1996 Load: 32.4 t ADT: 1,500
INTERSTATE 580 WB
GoodOver: PEDESTRIAN WALKWAY
04-ALA-580-R29.49, Alameda, CA
Built 1993 Load: 32.4 t ADT: 103,500
EB 580 OFF-RAMP
GoodOver: ALAMO CANAL
04-ALA-580-20.56-PLE, Alameda, CA
Built 2002 Load: 32.4 t ADT: 10,000
VILLAGE PKWY-NB680
GoodOver: BIG CANYON CREEK
04-ALA-680-R20.32-DBLN, Alameda, CA
Built 2000 Load: 32.4 t ADT: 700
INTERSTATE 580
GoodOver: ALTAMONT CREEK TRIBUTARY
04-ALA-580-R9.40-LVMR, Alameda, CA
Built 1969 Load: 32.4 t ADT: 175,000
ST RTE 84 (ISABEL)
GoodOver: ARROYO MOCHO
04-ALA-084-R27.10-LVMR, Alameda, CA
Built 2003 Load: 32.4 t ADT: 22,800
INTERSTATE 580
GoodOver: ACFC CHANNEL LINES I-J
04-ALA-580-R29.23-CAVA, Alameda, CA
Built 2011 Load: 32.4 t ADT: 7,900
STATE ROUTE 238
GoodOver: UP RR, BNSF, & AMTRAK
04-ALA-238-16.14, Alameda, CA
Built 2010 Load: 32.4 t ADT: 121,000
BURMA RD (BRANCH)
GoodOver: E.B.M.U.D. SEWER OUTFALL
04-ALA-080-1.71-OAK, Alameda, CA
Built 2019 Load: 32.4 t ADT: 150
SR 84 MARSHLANDS
GoodOver: BEARD CREEK
04-ALA-084-R3.63, Alameda, CA
Built 2018 Load: 32.4 t ADT: 400
STATE ROUTE 84
GoodOver: ALAMEDA CREEK
04-ALA-084-13.33, Alameda, CA
Built 2022 Load: 32.4 t ADT: 14,000
ALVARADO-NILES RD
GoodOver: DRY CREEK
0.3 MI E/O CENTRAL AVE, Alameda, CA
Built 1978 Load: 32.4 t ADT: 36,400
INDUSTRIAL PKWY W
GoodOver: ALAMEDA CREEK BRANCH
0.3 MI S/W INDUSTRL PKWY, Alameda, CA
Built 1989 Load: 32.4 t ADT: 26,257
LEONA CREEK DRIVE
GoodOver: LION CREEK
BTW 66TH & 69TH AVES, Alameda, CA
Built 1965 Load: 32.4 t ADT: 200
WHIPPLE RD
GoodOver: ALAMEDA CREEK
0.2 MI E UNION CITY BLVD, Alameda, CA
Built 1977 Load: 32.4 t ADT: 22,900
PATTERSON PASS RD
GoodOver: ARROYO SECO
500' E MULQUEENEY ST, Alameda, CA
Built 1987 Load: 32.4 t ADT: 5,000
40TH STREET
GoodOver: UP RR SPUR
500 FT W OF HORTON ST, Alameda, CA
Built 1995 Load: 32.4 t ADT: 9,924
A STREET
GoodOver: UP RR,BNSF,AMTRAK, YOLO
0.5 MI E OF 880, Alameda, CA
Built 1983 Load: 32.4 t ADT: 30,300
STONERIDGE DRIVE
GoodOver: ARROYO MOCHO
0.3 KM W OF SANTA RITA RD, Alameda, CA
Built 1981 Load: 32.4 t ADT: 3,847
VALLEY AVE
GoodOver: ARROYO DEL VALLE
0.8 KM NORTH OF BERNAL AV, Alameda, CA
Built 1985 Load: 32.4 t ADT: 13,100
FIRST STREET
GoodOver: ARROYO DEL VALLE
0.2 N OF VINEYARD AVE, Alameda, CA
Built 2000 Load: 32.4 t ADT: 20,400
TASSAJARA ROAD
GoodOver: KOBOLD CREEK
1.4 MI NORTH OF DUBLIN BL, Alameda, CA
Built 2007 Load: 32.4 t ADT: 9,000
MAYMONT LANE
GoodOver: TASSAJARA CREEK
WEST OF CREEKVIEW DRIVE, Alameda, CA
Built 2005 Load: 32.4 t ADT: 350
SOMERSET LANE
GoodOver: TASSAJARA CREEK
WEST OF CREEKVIEW DRIVE, Alameda, CA
Built 2006 Load: 32.4 t ADT: 800
CENTRAL PARKWAY WB
GoodOver: TASSAJARA CREEK
EAST OF PERSIMMON DRIVE, Alameda, CA
Built 2001 Load: 32.4 t ADT: 1,500
CENTRAL PARKWAY EB
GoodOver: TASSAJARA CREEK
EAST OF PERSIMMON DRIVE, Alameda, CA
Built 2001 Load: 32.4 t ADT: 1,500
Showing 19,951-20,000 of 27,040 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.