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
INTERSTATE 580 WB
FairOver: SCHAEFER RANCH ROAD
04-ALA-580-R23.86, Alameda, CA
Built 1976 Load: 32.4 t ADT: 103,500
INTERSTATE 580 EB
FairOver: REDWOOD ROAD
04-ALA-580-R29.37, Alameda, CA
Built 1986 Load: 32.4 t ADT: 103,500
INTERSTATE 580 WB
FairOver: REDWOOD ROAD
04-ALA-580-R29.37, Alameda, CA
Built 1987 Load: 32.4 t ADT: 103,500
INTERSTATE 580
FairOver: ARROYO LAS POSITAS
04-ALA-580-13.13, Alameda, CA
Built 1972 Load: 32.4 t ADT: 208,000
STATE ROUTE 238 SB
FairOver: UP RR & BARTD
04-ALA-238-15.41, Alameda, CA
Built 1994 Load: 32.4 t ADT: 121,000
STATE ROUTE 238 NB
FairOver: UP RR & BARTD
04-ALA-238-15.41, Alameda, CA
Built 1994 Load: 32.4 t ADT: 100,000
INTERSTATE 580
FairOver: SAN LORENZO CR,OLD DUBLN
04-ALA-580-R27.53, Alameda, CA
Built 1986 Load: 32.4 t ADT: 98,500
INTERSTATE 580
FairOver: 5 CANYNS RD,SAN LORENZO
04-ALA-580-R27.69, Alameda, CA
Built 1986 Load: 32.4 t ADT: 98,500
INTERSTATE 580
FairOver: SAN LORENZO CR OLD DUBLN
04-ALA-580-R27.53, Alameda, CA
Built 1986 Load: 32.4 t ADT: 98,500
GROVE-EB 580 ONRMP
FairOver: CROW CREEK
04-ALA-580-R28.57, Alameda, CA
Built 1988 Load: 32.4 t ADT: 4,000
INTERSTATE 580 EB
FairOver: GROVE WAY
04-ALA-580-R28.41, Alameda, CA
Built 1988 Load: 32.4 t ADT: 98,500
INTERSTATE 580 WB
FairOver: GROVE WAY
04-ALA-580-R28.41, Alameda, CA
Built 1988 Load: 32.4 t ADT: 98,500
INTERSTATE 580
FairOver: SAN LORENZO CREEK
04-ALA-580-R27.16, Alameda, CA
Built 1957 Load: 32.4 t ADT: 197,000
INTERSTATE 580 EB
FairOver: EAST CASTRO VALLEY BLVD
04-ALA-580-R27.00, Alameda, CA
Built 1986 Load: 32.4 t ADT: 98,500
INTERSTATE 580 WB
FairOver: EAST CASTRO VALLEY BLVD
04-ALA-580-R27.00, Alameda, CA
Built 1986 Load: 32.4 t ADT: 98,500
WHIPPLE RD-N880 ON
FairOver: UP RR YARD SPUR
04-ALA-880-13.84-UNC, Alameda, CA
Built 1993 Load: 32.4 t ADT: 7,300
INTERSTATE 880
FairOver: ARROYO DE LA LAGUNA CRK
04-ALA-880-3.67-FMT, Alameda, CA
Built 1958 Load: 32.4 t ADT: 161,000
INTERSTATE 880
FairOver: AGUA CALIENTE CREEK
04-ALA-880-2.77-FMT, Alameda, CA
Built 1958 Load: 32.4 t ADT: 161,000
SB OFFRAMP VARGAS
FairOver: VARGAS ROAD
04-ALA-680-R7.46-FMT, Alameda, CA
Built 2010 Load: 32.4 t ADT: 8,000
INTERSTATE 580
FairOver: KUHNLE AVE
04-ALA-580-R38.92-OAK, Alameda, CA
Built 1965 Load: 32.4 t ADT: 163,000
INTERSTATE 680 NB
FairOver: DEPT OF WATER RESOURCES
04-ALA-680-M0.77-FMT, Alameda, CA
Built 1971 Load: 32.4 t ADT: 61,000
I 80 WB
FairOver: UTILITY TUNNEL & PUC
04-ALA-080-2.00-OAK, Alameda, CA
Built 1949 Load: 32.4 t ADT: 265,000
N680-STONERIDGE DR
FairOver: SOUTH SAN RAMON CREEK
04-ALA-680-R19.07-PLE, Alameda, CA
Built 1991 Load: 32.4 t ADT: 2,300
STONERIDGE DR-N680
FairOver: SOUTH SAN RAMON CREEK
04-ALA-680-R19.18-PLE, Alameda, CA
Built 1991 Load: 32.4 t ADT: 2,200
STONERIDGE DR-N680
FairOver: SOUTH SAN RAMON CREEK
04-ALA-680-R19.32-PLE, Alameda, CA
Built 1991 Load: 32.4 t ADT: 3,300
W GRAND-N880 ONRMP
FairOver: UP RR,BNSF RY,AMTRAK,POR
04-ALA-880-R34.50R-OAK, Alameda, CA
Built 1997 Load: 32.4 t ADT: 7,000
RADIO STATION ROAD
FairOver: BAY WETLANDS
04-ALA-080-2.36-OAK, Alameda, CA
Built 1997 Load: 32.4 t ADT: 1,000
INTERSTATE 580
FairOver: LAKE CHABOT CREEK
04-ALA-580-30.10, Alameda, CA
Built 1990 Load: 32.4 t ADT: 207,000
SR 84 (ISABEL AVE)
FairOver: ARROYO LAS POSITAS
04-ALA-084-M27.74-LVMR, Alameda, CA
Built 2011 Load: 32.4 t ADT: 30,000
DOOLITTLE DRIVE
FairOver: AIRPORT CABLE CAR
04-ALA-061-R15.61-OAK, Alameda, CA
Built 2014 Load: 32.4 t ADT: 22,500
INTERSTATE 880
FairOver: ESTUDILLO CANAL
04-ALA-880-20.96-SLN, Alameda, CA
Built 1995 Load: 32.4 t ADT: 219,000
WASHINGTON AV,RAMP
FairOver: ESTUDILLO CANAL
04-ALA-000-20.96-SLN, Alameda, CA
Built 1996 Load: 32.4 t ADT: 30,800
OAKPORT STREET
FairOver: ELMHURST CREEK
0.2 MI N/O ROLAND WAY, Alameda, CA
Built 1968 Load: 32.4 t ADT: 5,252
FREMONT BLVD
FairOver: ARROYO DE LA LAGUNA
0.1 N/O AUTO MALL PKWY, Alameda, CA
Built 1955 Load: 32.4 t ADT: 18,100
CASTRO VALLEY BLVD
FairOver: CROW CREEK
0.2 MI W/O CROW CANYON RD, Alameda, CA
Built 1988 Load: 32.4 t ADT: 23,800
GROVE WAY
FairOver: CROW CREEK
JUST SOUTH OF I-580, Alameda, CA
Built 1988 Load: 32.4 t ADT: 31,100
CROW CANYON RD
FairOver: CROW CREEK
1.7 MI N OF I-580, Alameda, CA
Built 1974 Load: 32.4 t ADT: 28,800
CROW CANYON RD
FairOver: CROW CREEK
2 MI N OF SH I-580, Alameda, CA
Built 1974 Load: 32.4 t ADT: 28,800
WINTON AVE
FairOver: UP RR, BNSF RY, AMTRAK
NEAR AMADOR ST, Alameda, CA
Built 1972 Load: 32.4 t ADT: 23,732
MINES RD
FairOver: ARROYO MOCHO
12.6 MI S/E TESLA RD, Alameda, CA
Built 1988 Load: 32.4 t ADT: 500
ISHERWOOD WAY
FairOver: ALAMEDA FLOOD CNTRL CHNL
AT PASEO PADRE, Alameda, CA
Built 1980 Load: 32.4 t ADT: 7,200
NEWARK BLVD
FairOver: UP RR & AMTRAK
0.3 MI N CENTRAL AVE, Alameda, CA
Built 1975 Load: 32.4 t ADT: 11,380
HEGENBERGER ROAD
FairOver: UP RR,BNSF,AMTRAK,BARTD
0.7 MI N I-880, Alameda, CA
Built 1966 Load: 32.4 t ADT: 46,294
TENNYSON ROAD
FairOver: WARD CREEK
0.15 MI E/O TAMPA AVE, Alameda, CA
Built 1973 Load: 32.4 t ADT: 34,200
ARROYO RD
FairOver: ARROYO MOCHO
0.2 MI S COLLEGE AVE, Alameda, CA
Built 1987 Load: 32.4 t ADT: 7,100
GRIMMER BLVD
FairOver: LAGUNA CR(FLD CNTRL L E)
W OF FREMONT BLVD, Alameda, CA
Built 1964 Load: 32.4 t ADT: 27,100
BERNAL AVE
FairOver: ARROYO DEL VALLE
0.05 MI N OF VINEYARD, Alameda, CA
Built 2009 Load: 32.4 t ADT: 13,900
CHARLOTTE WAY
FairOver: ARROYO SECO
300' W LUCILLE ST, Alameda, CA
Built 1987 Load: 32.4 t ADT: 3,450
LAS POSITAS RD
FairOver: ARROYO SECO
0.3 MI EAST OF 1ST ST, Alameda, CA
Built 1985 Load: 32.4 t ADT: 8,700
ARROYO VISTA
FairOver: ARROYO SECO
500' W LAS POSITAS RD, Alameda, CA
Built 1985 Load: 32.4 t ADT: 1,000
Showing 12,201-12,250 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.