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
VAN DUZEN ROAD
FairOver: CEDAR CREEK
12.5 MI SOUTH SR 36, Trinity, CA
Built 1977 Load: 24.6 t ADT: 578
ROAD 132 (B MADUX)
FairOver: ST JOHNS RIVER
0.8 MI N OF SR 216, Tulare, CA
Built 1947 Load: 24.6 t ADT: 1,270
MENDOCINO AVE
FairOver: MENDOCINO AVENUE OH
600' N MENDOCINO AVE OC, Tulare, CA
Built 1964 Load: 24.6 t ADT: 5,000
ROAD 136
FairOver: ALTA CANAL
AVENUE 420, Tulare, CA
Built 1953 Load: 24.6 t ADT: 200
ALDER LANE
FairOver: SULLIVAN CREEK
0.1 MI N MEADOW BROOK DR, Tuolumne, CA
Built 1960 Load: 24.6 t ADT: 250
SPRAGUE RD.
FairOver: BIG CREEK
2.5 MI W SMITH STA., Tuolumne, CA
Built 1938 Load: 24.6 t ADT: 25
STATE ROUTE 126
FairOver: EIGHTH STREET
07-VEN-126-R11.79-SPA, Ventura, CA
Built 1965 Load: 24.6 t ADT: 23,500
STATE ROUTE 126
FairOver: EIGHTH STREET
07-VEN-126-R11.79-SPA, Ventura, CA
Built 1965 Load: 24.6 t ADT: 23,500
MAIN ROAD
FairOver: DISTRICT #2 CANAL
NBVC POINT MUGU, Ventura, CA
Built 1948 Load: 24.7 t ADT: 200
IRR BIA RTE 167
FairOver: CAHTO CREEK
2.4 KM SW OF LAYTONVILLE, Mendocino, CA
Built 1978 Load: 24.8 t ADT: 3,000
STATE ROUTE 238
FairOver: DRY CREEK
04-ALA-238-7.19-UNC, Alameda, CA
Built 1929 Load: 24.9 t ADT: 26,250
WARD ST
FairOver: ARROYO DEL HAMBRE
AT ESTUDILLO ST, Contra Costa, CA
Built 1958 Load: 24.9 t ADT: 3,300
MT AUKUM RD
FairOver: MIDDLE FK COSUMNES RIVER
5.4 MI S PLEASANT VALY RD, El Dorado, CA
Built 1968 Load: 24.9 t ADT: 3,695
STATE ROUTE 33
FairOver: OUTSIDE CANAL
06-FRE-033-68.61, Fresno, CA
Built 1939 Load: 24.9 t ADT: 10,300
STATE ROUTE 168
FairOver: LITTLE DRY CREEK
06-FRE-168-T24.78, Fresno, CA
Built 1954 Load: 24.9 t ADT: 4,300
N. FIRST ST
FairOver: DRY CREEK CANAL
SOUTH OF ANDERSEN DR, Fresno, CA
Built 1954 Load: 24.9 t ADT: 19,941
N BROADWAY
FairOver: DRY CREEK CANAL
N OF CLARK AVE, Fresno, CA
Built 1953 Load: 24.9 t ADT: 3,987
CENTRAL AVE
FairOver: FRIANT-KERN CANAL
0.2 MI WEST OF COVE AVE, Fresno, CA
Built 1955 Load: 24.9 t ADT: 140
N SYCAMORE AVE
FairOver: HERNDON CANAL
0.01 MI NORTH OF SHAW AVE, Fresno, CA
Built 1938 Load: 24.9 t ADT: 200
E CLINTON AVE
FairOver: ENTERPRISE CANAL
0.62 MI EAST OF RIVERBEND, Fresno, CA
Built 1936 Load: 24.9 t ADT: 200
US HIGHWAY 101 SB
FairOver: KING SALMON AVE
01-HUM-101-72.88, Humboldt, CA
Built 1963 Load: 24.9 t ADT: 16,200
US HIGHWAY 101 NB
FairOver: KING SALMON AVE
01-HUM-101-72.88, Humboldt, CA
Built 1963 Load: 24.9 t ADT: 16,200
STATE ROUTE 211
FairOver: OLD RIVER
01-HUM-211-R76.46, Humboldt, CA
Built 1964 Load: 24.9 t ADT: 5,300
STATE ROUTE 99 NB
FairOver: BEARDSLEY CANAL
06-KER-099-R28.39, Kern, CA
Built 1964 Load: 24.9 t ADT: 55,000
STATE ROUTE 1
FairOver: BALLONA CREEK
07-LA-001-30.36-LA, Los Angeles, CA
Built 1937 Load: 24.9 t ADT: 50,000
RAMP/CONNECTOR 118
FairOver: BROWNS CANYON WASH
07-LA-118-R2.55-LA, Los Angeles, CA
Built 1971 Load: 24.9 t ADT: 8,268
N110-N5 CONNECTOR
FairOver: HILLSIDE
07-LA-110-25.43L-LA, Los Angeles, CA
Built 1931 Load: 24.9 t ADT: 100
OLD TOPANGA CYN RD
FairOver: TOPANGA CYN CRK
50FT W/O TOPANGA CYN RD, Los Angeles, CA
Built 1926 Load: 24.9 t ADT: 3,900
SIERRA HWY NBND
FairOver: SANTA CLARA RIV
0.3MI S/O SOLEDAD CYN RD, Los Angeles, CA
Built 1968 Load: 24.9 t ADT: 18,044
RD 19
FairOver: FRESNO RIVER
0.45 MI S AVE 16, Madera, CA
Built 1966 Load: 24.9 t ADT: 400
ROAD 25
FairOver: COTTONWOOD CREEK
0.1 MI N OF AVE 10, Madera, CA
Built 1973 Load: 24.9 t ADT: 837
ROAD 23
FairOver: FRESNO RIVER
AT AVE 15, Madera, CA
Built 1966 Load: 24.9 t ADT: 966
FORESTA ROAD
FairOver: CRANE CREEK
3.6 MI W NEW BIG OAT FL R, Mariposa, CA
Built 1959 Load: 24.9 t ADT: 10
STATE ROUTE 1
FairOver: SCHOONER GULCH
01-MEN-001-11.28, Mendocino, CA
Built 1941 Load: 24.9 t ADT: 2,900
OAKDALE ROAD
FairOver: CANAL CREEK
0.9 MI E AMSTERDAM RD, Merced, CA
Built 1940 Load: 24.9 t ADT: 477
OLIVE AVE
FairOver: FAIRFIELD CANAL
1.0 MI W ARBOLEDA DR, Merced, CA
Built 1974 Load: 24.9 t ADT: 1,945
COTTONWOOD ROAD
FairOver: CCID MAIN CANAL
0.5 MI E OF SR 33, Merced, CA
Built 1926 Load: 24.9 t ADT: 340
CUNNINGHAM RD
FairOver: MILES CREEK
2.2 MI N CHILDS AVE, Merced, CA
Built 1983 Load: 24.9 t ADT: 34
BLUE LAKE ROAD
FairOver: SOUTH FORK PIT RIVER
0.06 MI S JESS VALLEY RD, Modoc, CA
Built 1957 Load: 24.9 t ADT: 60
STATE ROUTE 29
FairOver: CALIFORNIA DRIVE
04-NAP-029-19.04-YNTV, Napa, CA
Built 1959 Load: 24.9 t ADT: 24,900
HARRIET LANE
FairOver: MID FK FEATHER RIV OVRFL
1.2 MI S DYSON LN, Plumas, CA
Built 1963 Load: 24.9 t ADT: 125
HARRLET LN
FairOver: MID FK FEATHER RIV OVRFL
1.3 MI S DYSON LN, Plumas, CA
Built 1963 Load: 24.9 t ADT: 125
STATE ROUTE 62 EB
FairOver: MISSION CHANNEL OVERFLOW
08-RIV-062-R5.62, Riverside, CA
Built 1966 Load: 24.9 t ADT: 20,910
RAGSDALE ROAD
FairOver: TEX WASH
0.6 MI E/O EAGLE MTN ROAD, Riverside, CA
Built 1932 Load: 24.9 t ADT: 200
RAGSDALE ROAD
FairOver: BUENA DITCH
0.8 MI E/O EAGLE MTN ROAD, Riverside, CA
Built 1932 Load: 24.9 t ADT: 200
RAGSDALE ROAD
FairOver: CHUCKWALLA DITCH
1.6 MI E/O EAGLE MTN ROAD, Riverside, CA
Built 1932 Load: 24.9 t ADT: 200
CURVED BRIDGE RD
FairOver: NORTH CHANNEL DRY CREEK
0.2 MI W DRY CR RD, Sacramento, CA
Built 1925 Load: 24.9 t ADT: 6,200
US HIGHWAY 101 SB
FairOver: SAN BENITO RIVER
05-SBT-101-5.21, San Benito, CA
Built 1932 Load: 24.9 t ADT: 25,500
INTERSTATE 15
FairOver: LENWOOD WASH
08-SBD-015-68.48-BSW, San Bernardino, CA
Built 1958 Load: 24.9 t ADT: 54,000
STATE ROUTE 62
FairOver: LONG CANYON CHANNEL
08-SBD-062-11.76, San Bernardino, CA
Built 1977 Load: 24.9 t ADT: 27,030
Showing 10,751-10,800 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.