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
RAILROAD STREET
FairOver: ESTRAY CREEK
0.2 MI SW SH 70, Plumas, CA
Built 1984 Load: 19.1 t ADT: 50
ROUTE 74
FairOver: SAN JACINTO RIVER
08-RIV-074-49.16, Riverside, CA
Built 1929 Load: 19.1 t ADT: 3,774
DOOLING ROAD
FairOver: ARROYO DOS PICACHOS
EAST ROSA MORADA RD, San Benito, CA
Built 1940 Load: 19.1 t ADT: 500
LA COSTA AVE
FairOver: NCTD, BNSF RY, & AMTRAK
150FT E/O COAST HWY 101, San Diego, CA
Built 1968 Load: 19.1 t ADT: 11,781
MACARTHUR DRIVE
FairOver: DELTA-MENDOTA CANAL
2.6 MI S LINNE ROAD, San Joaquin, CA
Built 1950 Load: 19.1 t ADT: 2,165
STATE ROUTE 166
FairOver: CARRIZO CREEK
05-SLO-166-44.26, San Luis Obispo, CA
Built 1941 Load: 19.1 t ADT: 2,900
STATE PARK RD
FairOver: PETERS CREEK
PORTOLA ST. PARK, San Mateo, CA
Built 1948 Load: 19.1 t ADT: 30
U.S. HIGHWAY 101
FairOver: STEVENS CREEK
04-SCL-101-48.04-MVW, Santa Clara, CA
Built 1932 Load: 19.1 t ADT: 155,000
WHITEHURST ROAD
FairOver: BODFISH CREEK
1.86 M S/O HECKER PASS RD, Santa Clara, CA
Built 1939 Load: 19.1 t ADT: 70
CORBY AVE
FairOver: COLGAN CREEK
0.1 MILE SOUTH OF HEARN, Sonoma, CA
Built 1930 Load: 19.1 t ADT: 3,000
ADOBE RD
FairOver: LYNCH CREEK
3.2 MI S PETALUMA HILL RD, Sonoma, CA
Built 1950 Load: 19.1 t ADT: 11,600
CHICAGO AVENUE
FairOver: M.I.D. LATERAL #5
0.4 MI E CARPENTER RD, Stanislaus, CA
Built 1927 Load: 19.1 t ADT: 1,898
PAULINE AVENUE
FairOver: M.I.D. LATERAL #4
S/O STATE RTE 132, Stanislaus, CA
Built 1922 Load: 19.1 t ADT: 646
PECAN LANE
FairOver: ADAMS CREEK
AT ADAMS RD, Tehama, CA
Built 1951 Load: 19.1 t ADT: 37
SR 190 (AVE 144)
FairOver: FRIANT-KERN CANAL
06-TUL-190-11.97, Tulare, CA
Built 1949 Load: 19.1 t ADT: 6,975
CARBONDALE ROAD
FairOver: WILLOW CREEK
0.9 MI S OLD LAMBERT RD, Amador, CA
Built 1970 Load: 19.4 t ADT: 250
NELSON SHIPPEE RD
FairOver: LITTLE DRY CREEK
1.8 MI W COLONY RD, Butte, CA
Built 1930 Load: 19.4 t ADT: 33
AFTON RD
FairOver: LITTLE DRY CREEK
0.2 MI E AGUAS FRIAS RD, Butte, CA
Built 1937 Load: 19.4 t ADT: 105
NELSON RD
FairOver: EDGAR SLOUGH OVERFLOW
0.2 MI E OF 7 MI LANE, Butte, CA
Built 1927 Load: 19.4 t ADT: 50
STATE ROUTE 4
FairOver: W BRANCH CHEROKEE CREEK
10-CAL-004-16.15, Calaveras, CA
Built 1930 Load: 19.4 t ADT: 5,900
WAGNER AVE
FairOver: SALT CREEK
0.1 MI E OF REDDINGTON RD, Colusa, CA
Built 1960 Load: 19.4 t ADT: 399
STATE ROUTE 4 EB
FairOver: RODEO CREEK
04-CC-004-R1.96R, Contra Costa, CA
Built 1920 Load: 19.4 t ADT: 20,250
HARBOR ST
FairOver: CONTRA COSTA CANAL
0.01 MI S STONEMAN AVE, Contra Costa, CA
Built 1966 Load: 19.4 t ADT: 13,000
MATTOLE RD
FairOver: DRY CREEK
1 MI S/O SINGLEY CREEK, Humboldt, CA
Built 1985 Load: 19.4 t ADT: 196
MANOR STREET SB
FairOver: KERN RIVER
0.2 MI S ROBERTS LANE, Kern, CA
Built 1954 Load: 19.4 t ADT: 10,750
MANOR STREET NB
FairOver: KERN RIVER
0.2 MI S ROBERTS LANE, Kern, CA
Built 1957 Load: 19.4 t ADT: 10,750
BROWN-INYOKERN RD
FairOver: AIRPORT WASH
1.2 MI N OF RTE 178, Kern, CA
Built 1945 Load: 19.4 t ADT: 2,050
SANTA FE AVE
FairOver: SWEET CANAL
1.5 MI S SHERMAN AVE, Kings, CA
Built 1942 Load: 19.4 t ADT: 1,500
FOOTHILL BLVD
FairOver: SAN DIMAS WASH
0.5MI W/O SAN DIMAS C RD, Los Angeles, CA
Built 1963 Load: 19.4 t ADT: 24,624
SIERRA HWY SBND
FairOver: SANTA CLARA RIV
0.3MI S/O SOLEDAD CYN RD, Los Angeles, CA
Built 1938 Load: 19.4 t ADT: 17,640
ROAD 21
FairOver: COTTONWOOD CREEK
0.25 MI S AVE 9, Madera, CA
Built 1948 Load: 19.4 t ADT: 189
SIR-FRANCIS DRAKE
FairOver: DEVILS GULCH
4.4 MI E OF SR 1, Marin, CA
Built 1920 Load: 19.4 t ADT: 3,000
STATE ROUTE 1
FairOver: GARCIA RIVER
01-MEN-001-18.50, Mendocino, CA
Built 1938 Load: 19.4 t ADT: 2,100
DOS RIOS RD
FairOver: EEL RIVER & NCRRA (NWP)
0.5 MI NW OF SR 162, Mendocino, CA
Built 1966 Load: 19.4 t ADT: 143
USAL ROAD
FairOver: USAL CREEK
5.9 MI N JCT SR 1, Mendocino, CA
Built 1955 Load: 19.4 t ADT: 24
STATE ROUTE 33
FairOver: DELTA-MENDOTA CANAL
10-MER-033-R15.11, Merced, CA
Built 1950 Load: 19.4 t ADT: 8,200
CORRAL DE TIERRA R
FairOver: CALERA CREEK
1.6 MI SOUTH OF SR 68, Monterey, CA
Built 1947 Load: 19.4 t ADT: 5,700
CASCADE RD
FairOver: MCKINNEY CREEK
0.2 MI NW MCKNY RUBCN SP, Placer, CA
Built 1950 Load: 19.4 t ADT: 1,409
N215-W60, E60-S215
FairOver: DOWN ST,AMTRAK,METROLINK
08-RIV-215-R43.08R-RIV, Riverside, CA
Built 1961 Load: 19.4 t ADT: 202,000
TYLER ISLAND BR RD
FairOver: GEORGIANA SLOUGH
1.5 MI E ISLETON ROAD, Sacramento, CA
Built 1940 Load: 19.4 t ADT: 252
GREEN VALLEY LK RD
FairOver: NORTH FORK DEEP CREEK
10' WEST OF ROUTE 18, San Bernardino, CA
Built 1940 Load: 19.4 t ADT: 849
NATL TRAILS HWY
FairOver: ROCK WASH
0.5 MI E OF CRUCERO RD, San Bernardino, CA
Built 1930 Load: 19.4 t ADT: 108
RANCHERO ST
FairOver: CALIFORNIA AQUEDUCT
0.95 MI E MAPLE AVE, San Bernardino, CA
Built 1971 Load: 19.4 t ADT: 7,759
ESCALON-BELLOTA RD
FairOver: TEMPLE CREEK
NORTH OF SKIFF RD, San Joaquin, CA
Built 1925 Load: 19.4 t ADT: 2,194
CORRAL HOLLOW ROAD
FairOver: DELTA-MENDOTA CANAL
1.5 MI N OF I-580, San Joaquin, CA
Built 1947 Load: 19.4 t ADT: 1,006
US HIGHWAY 101
FairOver: ROMERO CREEK
05-SB-101-9.34, Santa Barbara, CA
Built 1915 Load: 19.4 t ADT: 76,000
U.S. HIGHWAY 101
FairOver: COYOTE CREEK
04-SCL-101-36.69-SJS, Santa Clara, CA
Built 1940 Load: 19.4 t ADT: 150,000
CENTRAL EXPWY EB
FairOver: SAN TOMAS AQUINO CREEK
0.25 MI N SA TOMAS EXPWY, Santa Clara, CA
Built 1963 Load: 19.4 t ADT: 36,160
BOWDEN CT
FairOver: LLAGAS CREEK
0.1 MI N WATSONVILLE RD, Santa Clara, CA
Built 1919 Load: 19.4 t ADT: 240
BRIDGE STREET
FairOver: SACRAMENTO RIVER
WEST OF FIRST ST, Siskiyou, CA
Built 1965 Load: 19.4 t ADT: 1,104
Showing 9,201-9,250 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.