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
AUSTIN ROAD
GoodOver: S FK S LITTLEJOHNS CREEK
2 MI N FRENCH CAMP RD, San Joaquin, CA
Built 1969 Load: 24.0 t ADT: 594
LAS PILITAS RD
GoodOver: PILITAS CREEK
2.4 MI E SANTA MARG RD, San Luis Obispo, CA
Built 1930 Load: 24.0 t ADT: 189
U.S. HIGHWAY 101
GoodOver: SAN MATEO CREEK
04-SM-101-13.44-SM, San Mateo, CA
Built 1928 Load: 24.0 t ADT: 236,000
METCALF ROAD
GoodOver: COYOTE CREEK
0.35 W/O SH 101, Santa Clara, CA
Built 1948 Load: 24.0 t ADT: 1,610
PONDEROSA WAY
GoodOver: BAILEY CREEK
7 MI S/E OF SHINGLETOWN, Shasta, CA
Built 1938 Load: 24.0 t ADT: 50
SR 120
GoodOver: SOUTH FORK TUOLUMNE RIV
10-TUO-120-R53.02, Tuolumne, CA
Built 1964 Load: 24.0 t ADT: 3,650
WINDING ROAD
GoodOver: JAWBONE CREEK
NO DATA ENTERED, Tuolumne, CA
Built 1990 Load: 24.0 t ADT: 50
SATICOY ST
GoodOver: ALISO CREEK
0.44MI W/O RESEDA BLVD, Los Angeles, CA
Built 1954 Load: 24.2 t ADT: 29,369
INTERSTATE 80
GoodOver: TEMESCAL CREEK
04-ALA-080-3.49-EMV, Alameda, CA
Built 1936 Load: 24.3 t ADT: 288,000
CROW CANYON RD
GoodOver: CROW CREEK
0.7 MI N/O I-580, Alameda, CA
Built 1971 Load: 24.3 t ADT: 28,800
HESPERIAN BLVD
GoodOver: ORA LOMA DITCH
THORNALLY ST, Alameda, CA
Built 1951 Load: 24.3 t ADT: 29,800
HARDER RD
GoodOver: NO NAME CREEK
DONALD AVE, Alameda, CA
Built 1955 Load: 24.3 t ADT: 28,183
BLACOW RD
GoodOver: LAGUNA CREEK
FREMONT BLVD (0.1M E/O), Alameda, CA
Built 1955 Load: 24.3 t ADT: 3,600
PALOMARES RD
GoodOver: STONY BROOK
1.7 MILES NORTH OF SR 84, Alameda, CA
Built 1925 Load: 24.3 t ADT: 570
OWENS DR
GoodOver: CHABOT CANAL
0.2 MI EAST OF HOPYARD, Alameda, CA
Built 1967 Load: 24.3 t ADT: 3,545
HORSE MEADOWS ROAD
GoodOver: WILLOW CREEK
NO DATA ENTERED, Alpine, CA
Built 1984 Load: 24.3 t ADT: 8
LATROBE ROAD
GoodOver: LITTLE INDIAN CREEK
S PLYMOUTH SACRAMENTO RD, Amador, CA
Built 1970 Load: 24.3 t ADT: 2,579
STATE ROUTE 99
GoodOver: CROSS DRAIN
03-BUT-099-45.87, Butte, CA
Built 1915 Load: 24.3 t ADT: 11,600
STATE ROUTE 32
GoodOver: GABLE DRAW
03-BUT-032-3.74, Butte, CA
Built 1921 Load: 24.3 t ADT: 11,700
STATE ROUTE 99
GoodOver: CROSS DRAIN
03-BUT-099-45.92, Butte, CA
Built 1915 Load: 24.3 t ADT: 11,600
MIDWAY RD
GoodOver: NELSON SLOUGH
0.3 MI N NELSON RD, Butte, CA
Built 1915 Load: 24.3 t ADT: 1,254
MIDWAY RD
GoodOver: LOST SLOUGH
0.6 MI N OF NELSON RD, Butte, CA
Built 1915 Load: 24.3 t ADT: 1,380
CAMP CREEK RD
GoodOver: FLEA VALLEY CREEK
TRNOFF 0.9 MI ON PULGA RD, Butte, CA
Built 1962 Load: 24.3 t ADT: 19
BANGOR PARK RD
GoodOver: WILSON CREEK
1.0 MI W OF BANGOR HWY, Butte, CA
Built 1961 Load: 24.3 t ADT: 300
DUNSTONE DRIVE
GoodOver: WILSON CREEK
N OF LA PORTE RD, Butte, CA
Built 1970 Load: 24.3 t ADT: 3,000
STATE ROUTE 49
GoodOver: CHEROKEE CREEK
10-CAL-049-9.01-ANG, Calaveras, CA
Built 1941 Load: 24.3 t ADT: 8,050
CALIFORNIA ST
GoodOver: SAN ANDREAS CREEK
0.05 MI W/O POPE ST, Calaveras, CA
Built 1953 Load: 24.3 t ADT: 395
SR 20
GoodOver: POWELL SLOUGH
03-COL-020-28.54, Colusa, CA
Built 1915 Load: 24.3 t ADT: 6,400
OLD 99W
GoodOver: GLENN VALLEY SLOUGH OFLO
1.9 MI NORTH OF HAAS RD, Colusa, CA
Built 1914 Load: 24.3 t ADT: 1,298
SAN PABLO AVE
GoodOver: MCCARTHY CREEK
0.2 MI NE TARA HILLS DR, Contra Costa, CA
Built 1969 Load: 24.3 t ADT: 15,109
YGNACIO VALLEY RD
GoodOver: PINE CREEK
0.2 MI E OAK GROVE RD, Contra Costa, CA
Built 1954 Load: 24.3 t ADT: 39,300
BYRON HWY
GoodOver: BRUSHY CREEK
2.9 MI N ALAMEDA CO LINE, Contra Costa, CA
Built 1953 Load: 24.3 t ADT: 12,023
WILBUR AVE
GoodOver: E ANTIOCH CREEK
0.05 MI W OF CAVALLO RD, Contra Costa, CA
Built 1959 Load: 24.3 t ADT: 6,603
COURT LANE
GoodOver: GALINDO CREEK
0.1 MI S COWELL RD, Contra Costa, CA
Built 1960 Load: 24.3 t ADT: 300
WHITMAN RD
GoodOver: SDM CHANNEL
0.3 MI NE OAK GROVE RD, Contra Costa, CA
Built 1965 Load: 24.3 t ADT: 1,500
ALCOSTA BLVD
GoodOver: SOUTH SAN RAMON CREEK
0.9 MI EAST OF I-680, Contra Costa, CA
Built 1962 Load: 24.3 t ADT: 26,700
TREAT BLVD
GoodOver: PINE CREEK
AT SAN MIGUEL RD, Contra Costa, CA
Built 1965 Load: 24.3 t ADT: 18,245
HARBOR ST
GoodOver: KIRKER CREEK
AT STONEMAN AVE, Contra Costa, CA
Built 1968 Load: 24.3 t ADT: 2,000
WEST EL PINTADO RD
GoodOver: GREEN VALLEY CREEK
300 FT N DIABLO RD, Contra Costa, CA
Built 1970 Load: 24.3 t ADT: 3,322
CONCORD AVENUE
GoodOver: MARSH CREEK
1.0 MI W WALNUT AVE, Contra Costa, CA
Built 1959 Load: 24.3 t ADT: 3,979
FAIRVIEW AVENUE
GoodOver: SAND CREEK
AT SAND CREEK ROAD, Contra Costa, CA
Built 1966 Load: 24.3 t ADT: 8,500
MORNINGHOME RD
GoodOver: SYCAMORE CREEK
AT SYCAMORE VALLEY RD, Contra Costa, CA
Built 1970 Load: 24.3 t ADT: 400
VALLEY VIEW RD
GoodOver: SAN PABLO CREEK
0.2 MI E SAN PABLO DAM RD, Contra Costa, CA
Built 1966 Load: 24.3 t ADT: 8,760
MAY ROAD
GoodOver: SAN PABLO CREEK
AT SAN PABLO DAM RD, Contra Costa, CA
Built 1963 Load: 24.3 t ADT: 8,468
OLD RANCH RD
GoodOver: ALAMO CREEK
0.2 MI W DOUGHERTY RD, Contra Costa, CA
Built 1967 Load: 24.3 t ADT: 1,000
PINE VALLEY RD
GoodOver: SOUTH SAN RAMON CREEK
0.5 MI W ALCOSTA BLVD, Contra Costa, CA
Built 1967 Load: 24.3 t ADT: 9,000
MONTEVIDEO DR
GoodOver: SOUTH SAN RAMON CREEK
0.5 MI W ALCOSTA BLVD, Contra Costa, CA
Built 1967 Load: 24.3 t ADT: 12,000
OLD ORCHARD RD
GoodOver: SYCAMORE CREEK
AT SYCAMORE VALLEY RD, Contra Costa, CA
Built 1970 Load: 24.3 t ADT: 1,200
DUNCAN STREET
GoodOver: WALNUT CREEK
AT N. BROADWAY STREET, Contra Costa, CA
Built 1971 Load: 24.3 t ADT: 5,000
MT. DIABLO BLVD
GoodOver: LAS TRAMPAS CREEK
100 FT E. OF N. BROADWAY, Contra Costa, CA
Built 1971 Load: 24.3 t ADT: 14,294
Showing 18,201-18,250 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.