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
ROCK CR RD
FairOver: ROCK CREEK
0.4 MI N OF S.R. 299, Shasta, CA
Built 1960 Load: 18.1 t ADT: 1,144
PEACH ORCHARD ROAD
FairOver: MOFFETT CREEK
0.2 MI E SR 3, Siskiyou, CA
Built 1920 Load: 18.1 t ADT: 94
AGER BESWICK RD
FairOver: SHOVEL CREEK
3.4 MI E OF COPCO ROAD, Siskiyou, CA
Built 1977 Load: 18.1 t ADT: 37
YREKA WALKER RD
FairOver: HUMBUG CREEK
JUST S OF HUMBUG CREEK RD, Siskiyou, CA
Built 1957 Load: 18.1 t ADT: 56
FRENCH CREEK RD
FairOver: DUCK LAKE CREEK
6.2 MI S/O SR 3, Siskiyou, CA
Built 1987 Load: 18.1 t ADT: 100
STONY POINT RD
FairOver: SANTA ROSA CREEK
.5 MI S/O W COLLEGE AVE, Sonoma, CA
Built 1971 Load: 18.1 t ADT: 22,000
LAMBERT BRIDGE RD
FairOver: DRY CREEK
0.4 MI W OF DRY CREEK RD, Sonoma, CA
Built 1915 Load: 18.1 t ADT: 838
LICHAU RD
FairOver: COPELAND CREEK
1.0 MI E PRESSLEY ROAD, Sonoma, CA
Built 1968 Load: 18.1 t ADT: 1,500
COOPERSTOWN ROAD
FairOver: GALLUP CREEK
2.8 MI NW LA GRANGE RD, Stanislaus, CA
Built 1965 Load: 18.1 t ADT: 35
COX ROAD
FairOver: WESTLEY WASTEWAY
0.1 MI N FRANK COX RD, Stanislaus, CA
Built 1950 Load: 18.1 t ADT: 987
PASKENTA ROAD
FairOver: WILLOW CREEK
0.2 MI W/O OSBORN RD, Tehama, CA
Built 1935 Load: 18.1 t ADT: 300
PETTYJOHN ROAD
FairOver: COLD FORK COTTONWOOD CRK
0.10 MI E WEEMASOUL RD, Tehama, CA
Built 1943 Load: 18.1 t ADT: 20
LASSEN ROAD
FairOver: SINGER CREEK FORK
2.2 MI E OF SH 99, Tehama, CA
Built 1981 Load: 18.1 t ADT: 80
ADOBE RD
FairOver: BLUE TENT CREEK
1.8 MI E OF SR 36, Tehama, CA
Built 1968 Load: 18.1 t ADT: 555
AVENUE 248
FairOver: FRIANT-KERN CANAL
0.1 MI EAST OF ROAD 224, Tulare, CA
Built 1949 Load: 18.1 t ADT: 175
ROAD 164
FairOver: COTTONWOOD CREEK
0.9 MI N OF AVE 352, Tulare, CA
Built 1947 Load: 18.1 t ADT: 420
SOUTH BARRETTA ST
FairOver: SONORA CREEK
100' NORTH OF THEALL, Tuolumne, CA
Built 1920 Load: 18.1 t ADT: 2,000
OLD 40 MILE RD
FairOver: WEST BEST SLOUGH
0.3 MI E OF 40 MI RD, Yuba, CA
Built 1927 Load: 18.1 t ADT: 50
ERLE RD
FairOver: NORTH FORK REEDS CREEK
.8 MI NW/O VIRGINIA RD, Yuba, CA
Built 1930 Load: 18.1 t ADT: 800
RANGE ROAD
FairOver: EL PIOJO CREEK
N LITTLE OAK FLAT SEC 27, Monterey, CA
Built 1969 Load: 18.3 t ADT: 1
STATE ROUTE 88
FairOver: WEST FORK CARSON RIVER
10-ALP-088-14.70, Alpine, CA
Built 1952 Load: 18.5 t ADT: 3,225
STATE ROUTE 162
FairOver: BIG BUTTE CREEK OVERFLOW
03-BUT-162-0.52, Butte, CA
Built 1943 Load: 18.5 t ADT: 930
LOWER HONCUT RD
FairOver: WILSON CREEK
5 MI E/O ST HWY 70, Butte, CA
Built 1950 Load: 18.5 t ADT: 948
WASHINGTON AVENUE
FairOver: UP RR & BNSF RY
JUST SE OF MONTGOMERY ST, Butte, CA
Built 1982 Load: 18.5 t ADT: 7,468
HAPPY VALLEY ROAD
FairOver: NORTH FK COSUMNES RIVER
1.3 MI E MT AUKUM RD, El Dorado, CA
Built 1936 Load: 18.5 t ADT: 240
NO DATA ENTERED
FairOver: STRAWBERRY CREEK
NO DATA ENTERED, El Dorado, CA
Built 1968 Load: 18.5 t ADT: 15
N FRESNO ST
FairOver: DRY CREEK CANAL
SOUTH OF MCKINLEY AVE, Fresno, CA
Built 1958 Load: 18.5 t ADT: 11,758
TOLLHOUSE RD
FairOver: DRY CREEK
0.1 M N/O PITTMAN HILL RD, Fresno, CA
Built 1925 Load: 18.5 t ADT: 1,600
W PANOCHE ROAD
FairOver: SILVER CREEK
5.0 MI. SOUTHWEST OF I-5, Fresno, CA
Built 1941 Load: 18.5 t ADT: 900
N FANCHER AVE
FairOver: FANCHER CREEK CANAL
SOUTH OF MCKINLEY AV, Fresno, CA
Built 1948 Load: 18.5 t ADT: 1,180
W BARSTOW AVE
FairOver: HERNDON CANAL
AT WESTLAWN AVE, Fresno, CA
Built 1920 Load: 18.5 t ADT: 500
STATE ROUTE 46
FairOver: MAIN DRAIN CANAL
06-KER-046-34.63, Kern, CA
Built 1956 Load: 18.5 t ADT: 6,100
FARGO AVE
FairOver: LAST CHANCE DITCH
0.5 MI W OF 13TH AVE, Kings, CA
Built 1955 Load: 18.5 t ADT: 1,708
WHITTIER BLVD
FairOver: RIO HONDO
0.1MI E/O BLUFF RD, Los Angeles, CA
Built 1921 Load: 18.5 t ADT: 24,813
PT REYES PETLMA RD
FairOver: NICASIO CREEK
3.2 MI E OF SR 1, Marin, CA
Built 1937 Load: 18.5 t ADT: 6,000
BUCK MEADOWS ROAD
FairOver: MOORE CREEK
1.2 MI N/O GREELEY HILL R, Mariposa, CA
Built 1937 Load: 18.5 t ADT: 610
STATE ROUTE 165
FairOver: DELTA-MENDOTA CANAL
10-MER-165-3.33, Merced, CA
Built 1950 Load: 18.5 t ADT: 1,800
VOORHEES ROAD
FairOver: DEADMAN CREEK
1.1 MI W PLAINSBURG RD, Merced, CA
Built 1938 Load: 18.5 t ADT: 56
BERT CRANE ROAD
FairOver: BEAR CREEK
0.6 MI S LISBON STREET, Merced, CA
Built 1945 Load: 18.5 t ADT: 80
COTTONWOOD ROAD
FairOver: DELTA-MENDOTA CANAL
400' WEST OF ORCHARD ROAD, Merced, CA
Built 1956 Load: 18.5 t ADT: 15
GUN CLUB ROAD
FairOver: MUD SLOUGH
1.9 MI E SANTA FE GRADE, Merced, CA
Built 1975 Load: 18.5 t ADT: 22
MCCABE ROAD
FairOver: CALIFORNIA AQUEDUCT
2.6 MI WEST OF I-5, Merced, CA
Built 1968 Load: 18.5 t ADT: 50
KAHLON ROAD
FairOver: DUCK SLOUGH OVERFLOW
1.9 MI SE OF E MISSION RD, Merced, CA
Built 1914 Load: 18.5 t ADT: 384
CATTLEMEN ROAD
FairOver: SALINAS RIVER
E OF US 101 NR SAN ARDO, Monterey, CA
Built 1929 Load: 18.5 t ADT: 1,500
NACIMIENTO RD
FairOver: STONEY CREEK RESVR INLET
SW S. MIGUELITO L S12A/25, Monterey, CA
Built 1955 Load: 18.5 t ADT: 8
DRY CREEK RD
FairOver: DRY CREEK
3.5 MI S OAKVILLE GRADE, Napa, CA
Built 1930 Load: 18.5 t ADT: 2,490
DOG BAR ROAD
FairOver: BEAR RIVER
AT NEVADA-PLACER CO LINE, Nevada, CA
Built 1935 Load: 18.5 t ADT: 1,313
GRAHAM STREET
FairOver: E GRDN GRVE-WNTERBG CHAN
0.4 MI S/O WARNER AVE, Orange, CA
Built 1961 Load: 18.5 t ADT: 8,000
WATT/CNTR JOINT AV
FairOver: DRY CREEK
0.4 MI N OF P.F.E. RD, Placer, CA
Built 1940 Load: 18.5 t ADT: 7,681
WARNER VALLEY RD
FairOver: WARNER CREEK
13.4 MI NW SH36, Plumas, CA
Built 1965 Load: 18.5 t ADT: 90
Showing 9,051-9,100 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.