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 80
PoorOver: SUISUN CREEK
04-SOL-080-14.55, Solano, CA
Built 1932 Load: 30.8 t ADT: 202,000
COUNTY LINE RD
PoorOver: RD 108 10P CANAL
4.6 MI EAST OF I-5, Colusa, CA
Built 1978 Load: 31.1 t ADT: 170
N680-N242 CONNECTR
PoorOver: WALNUT CREEK
04-CC-680-R18.70-CND, Contra Costa, CA
Built 1963 Load: 31.1 t ADT: 63,800
LOST HILLS ROAD
PoorOver: CALIFORNIA AQUEDUCT
0.7 MI S OF S.H. 46, Kern, CA
Built 1966 Load: 31.1 t ADT: 3,561
DAN MCNAMARA ROAD
PoorOver: DUCK SLOUGH
1.5 MI N SANDY MUSH ROAD, Merced, CA
Built 1982 Load: 31.1 t ADT: 75
GURR ROAD
PoorOver: DUCK SLOUGH
1.3 MI N SANDY MUSH ROAD, Merced, CA
Built 1975 Load: 31.1 t ADT: 500
WESTMINSTER AVE-WB
PoorOver: LOS ALAMITOS CHANNEL
0.8 MI W/O SEAL BEACH BL., Orange, CA
Built 1964 Load: 31.1 t ADT: 13,000
STATE ROUTE 86 SB
PoorOver: OTAN DITCH
08-RIV-086-0.99, Riverside, CA
Built 1989 Load: 31.1 t ADT: 15,300
VISTA RD
PoorOver: MOJAVE RIVER
0.6 MI W OF NAT TRA HWY, San Bernardino, CA
Built 1968 Load: 31.1 t ADT: 6,650
GLEN ARBOR RD
PoorOver: SAN LORENZO RIVER
E/O SR 9, Santa Cruz, CA
Built 1968 Load: 31.1 t ADT: 7,800
WASHINGTON ST
PoorOver: PETALUMA RIVER
NEAR DOWNTOWN PETALUMA, Sonoma, CA
Built 1970 Load: 31.1 t ADT: 21,900
INTERSTATE 680
PoorOver: BLUM ROAD
04-CC-680-21.52, Contra Costa, CA
Built 1962 Load: 31.4 t ADT: 118,000
HAMILTON ROAD
PoorOver: FIRST GULCH
3.1 MILES EAST OF US 101, Del Norte, CA
Built 1950 Load: 31.4 t ADT: 10
LAKE ISABELLA RD
PoorOver: BOREL CANAL
0.75 MI N OF NUGGET AVE, Kern, CA
Built 1948 Load: 31.4 t ADT: 5,400
ATHERTON ST
PoorOver: LOS CERRITOS CHAN
0.3MI W/O STUDEBAKER RD, Los Angeles, CA
Built 1956 Load: 31.4 t ADT: 10,403
CROSSROADS PKWY N
PoorOver: UPPR
0.3MI E/O WORKMAN ML RD, Los Angeles, CA
Built 1983 Load: 31.4 t ADT: 459
ESCALON BELLOTA RD
PoorOver: MORMON SLOUGH
S/E OF S.H. 26, San Joaquin, CA
Built 1966 Load: 31.4 t ADT: 2,430
ISBEL DR
PoorOver: BRANCIFORTE CREEK
0.2 MI N OF HWY 1, Santa Cruz, CA
Built 1971 Load: 31.4 t ADT: 2,015
SCHOOL RD 427
PoorOver: OAK CREEK
0.1 MI E RD 418, Madera, CA
Built 1975 Load: 31.8 t ADT: 2,066
STATE ROUTE 140
PoorOver: SWEETWATER CREEK
10-MPA-140-37.83, Mariposa, CA
Built 1926 Load: 31.8 t ADT: 1,400
LEWIS CREEK RD
PoorOver: LEWIS CREEK
2.6 ME E OF RTE 25, Monterey, CA
Built 1947 Load: 31.8 t ADT: 150
LA NOVIA AVENUE
PoorOver: SAN JUAN CREEK CHANNEL
0.4 MI. S/O ORTEGA HWY, Orange, CA
Built 1971 Load: 31.8 t ADT: 7,000
CAMINO DEL MAR
PoorOver: SAN DIEGUITO RIVER
0.3MI S/O VIA DE LA VALLE, San Diego, CA
Built 1932 Load: 31.8 t ADT: 14,027
PERSHING AVE
PoorOver: CALAVERAS RIVER
JUST N TELEGRAPH AVE, San Joaquin, CA
Built 1959 Load: 31.8 t ADT: 29,900
US HIGHWAY 101 SB
PoorOver: SAN JOSE CREEK
05-SB-101-21.62, Santa Barbara, CA
Built 1946 Load: 31.8 t ADT: 60,500
EAGLE NEST LANE
PoorOver: HILLSIDE
0.2 MI N RIVER RD, Sonoma, CA
Built 1930 Load: 31.8 t ADT: 100
SPERRY AVENUE
PoorOver: CALIFORNIA AQUEDUCT
0.1 MI E OF I 5, Stanislaus, CA
Built 1967 Load: 31.8 t ADT: 10,820
LOWREY ROAD
PoorOver: NEVADA CREEK
3.65 MI N/O PASKENTA RD, Tehama, CA
Built 1940 Load: 31.8 t ADT: 50
CERRITOS AVE
PoorOver: BIG DALTON WASH
0.2MI N/O ARROW HWY, Los Angeles, CA
Built 1961 Load: 32.1 t ADT: 6,302
ROAD 29
PoorOver: M I D CANAL
0.25 MI S AVE 15, Madera, CA
Built 1977 Load: 32.1 t ADT: 990
UNDINE ROAD
PoorOver: MIDDLE RIVER
2.1 MI W OF HOWARD RD, San Joaquin, CA
Built 1975 Load: 32.1 t ADT: 152
CORRAL HOLLOW RD
PoorOver: CALIFORNIA AQUEDUCT
0.9 MI N OF S.H. 580, San Joaquin, CA
Built 1967 Load: 32.1 t ADT: 550
WALNUT AVENUE
PoorOver: T.I.D. LATERAL #5
JCT AT HARDING AVE, Stanislaus, CA
Built 1920 Load: 32.1 t ADT: 1,738
C STREET
PoorOver: UP RR,BNSF RY,AMTRAK,2ND
AT 2ND STREET, Yolo, CA
Built 1958 Load: 32.1 t ADT: 4,620
INTERSTATE 580 WB
PoorOver: CROW CREEK
04-ALA-580-R28.57, Alameda, CA
Built 1988 Load: 32.4 t ADT: 98,500
INTERSTATE 680
PoorOver: BERNAL AVE
04-ALA-680-R16.75, Alameda, CA
Built 1967 Load: 32.4 t ADT: 136,000
INTERSTATE 680
PoorOver: HAPPY VALLEY ROAD
04-ALA-680-R15.04-PLE, Alameda, CA
Built 1967 Load: 32.4 t ADT: 124,000
INTERSTATE 680 SB
PoorOver: KOOPMAN ROAD
04-ALA-680-R12.44, Alameda, CA
Built 1967 Load: 32.4 t ADT: 59,000
INTERSTATE 680 SB
PoorOver: STATE ROUTE 237 (FUTURE)
04-ALA-680-M0.06-FMT, Alameda, CA
Built 1971 Load: 32.4 t ADT: 61,000
INTERSTATE 680 NB
PoorOver: STATE ROUTE 237 (FUTURE)
04-ALA-680-M0.04-FMT, Alameda, CA
Built 1971 Load: 32.4 t ADT: 61,000
INTERSTATE 680 SB
PoorOver: E WARREN AVE
04-ALA-680-M1.96-FMT, Alameda, CA
Built 1971 Load: 32.4 t ADT: 61,000
INTERSTATE 680 NB
PoorOver: E WARREN AVE
04-ALA-680-M1.97-FMT, Alameda, CA
Built 1971 Load: 32.4 t ADT: 61,000
ADELINE STREET
PoorOver: UP RR, BNSF RY, AMTRAK
JUST SOUTH OF 3RD ST, Alameda, CA
Built 1978 Load: 32.4 t ADT: 13,375
MINES ROAD
PoorOver: ARROYO MOCHO
13.8 MI S/E TESLA RD, Alameda, CA
Built 1988 Load: 32.4 t ADT: 500
MINES RD
PoorOver: ARROYO MOCHO
0.7 MI S/E OF TESLA RD, Alameda, CA
Built 1987 Load: 32.4 t ADT: 1,930
22ND & 23RD AVENUE
PoorOver: UP RR,BNSF,AMTRAK,BARTD
S OF EAST 12TH ST, Alameda, CA
Built 1962 Load: 32.4 t ADT: 17,278
ARDENWOOD BLVD
PoorOver: UP RR
0.3 MI WEST OF HWY 84, Alameda, CA
Built 1985 Load: 32.4 t ADT: 16,300
BELL STREET
PoorOver: FLOOD CONTROL CHANNEL
200 FT WEST OF LORREN DR, Alameda, CA
Built 1990 Load: 32.4 t ADT: 700
EL CHARRO RD
PoorOver: ARROYO LAS POSITAS
2000 FT S OF I-580, Alameda, CA
Built 2003 Load: 32.4 t ADT: 3,545
STATE ROUTE 88
PoorOver: SILVER LAKE SPILLWAY
10-AMA-088-R65.82, Amador, CA
Built 2002 Load: 32.4 t ADT: 2,750
Showing 26,451-26,500 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |