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
STATE ROUTE 299
FairOver: INDIAN CREEK
02-TRI-299-59.68, Trinity, CA
Built 1974 Load: 45.0 t ADT: 4,050
CHESTNUT ST
FairOver: LITTLE CHICO CREEK
AT W 9TH ST, Butte, CA
Built 1980 Load: 45.4 t ADT: 1,700
WALNUT ST
FairOver: LITTLE CHICO CREEK
BTWN DAYTON RD & 9TH ST, Butte, CA
Built 1982 Load: 45.4 t ADT: 6,096
SR 168
FairOver: BIG SANDY CREEK
06-FRE-168-T31.14, Fresno, CA
Built 1939 Load: 45.4 t ADT: 6,600
TOLLHOUSE RD
FairOver: DRY CREEK
2 MI W/O PITTMAN HILL RD, Fresno, CA
Built 1925 Load: 45.4 t ADT: 450
MATTOLE ROAD
FairOver: WOODS CREEK
1.9 MI SW WILDER RDG RD, Humboldt, CA
Built 1976 Load: 45.4 t ADT: 171
INTERSTATE 5 SB
FairOver: KERN RIV FLOOD CANAL RD
06-KER-005-71.56, Kern, CA
Built 1967 Load: 45.4 t ADT: 16,000
FLAIR DR
FairOver: EATON WASH
0.2MI W/O BALDWIN AVE, Los Angeles, CA
Built 1956 Load: 45.4 t ADT: 8,240
COLUMBIA ST
FairOver: METRO
50FT W/O FAIR OAKS AVE, Los Angeles, CA
Built 1910 Load: 45.4 t ADT: 4,284
MAUNA LOA AVE
FairOver: BIG DALTON WASH
1.0MI E/O GRAND AVE, Los Angeles, CA
Built 1960 Load: 45.4 t ADT: 2,329
213TH ST E
FairOver: CALIFORNIA AQUEDUCT
0.3MI S/O SR-138 HWY, Los Angeles, CA
Built 1968 Load: 45.4 t ADT: 80
COTTON GIN ROAD
FairOver: OUTSIDE CANAL
1.6 MI E OF SR 165, Merced, CA
Built 1975 Load: 45.4 t ADT: 130
PALISADES ROAD
FairOver: DRAINAGE NACIMIENTO RIV
NW OAK FLAT SEC 27, Monterey, CA
Built 2012 Load: 45.4 t ADT: 1
STATE ROUTE 89
FairOver: DONNER CREEK
03-NEV-089-0.39, Nevada, CA
Built 1959 Load: 45.4 t ADT: 9,200
CAMBRIDGE STREET
FairOver: SANTIAGO CREEK CHANNEL
0.1 MI. N/O ROUTE 22 FWY, Orange, CA
Built 1972 Load: 45.4 t ADT: 6,700
INTERSTATE 10
FairOver: EDOM WASH
08-RIV-010-36.82, Riverside, CA
Built 1955 Load: 45.4 t ADT: 94,000
MACK ROAD
FairOver: MORRISON CREEK
0.6 MI W/O FRANKLIN BLVD, Sacramento, CA
Built 1982 Load: 45.4 t ADT: 29,416
INTERSTATE 10
FairOver: HUNTS LANE
08-SBD-010-24.76-COL, San Bernardino, CA
Built 1962 Load: 45.4 t ADT: 110,500
SORRENTO VLY RD
FairOver: LOS PENASQUITOS CREEK
0.9 MI S/O CARMEL MTN RD, San Diego, CA
Built 1986 Load: 45.4 t ADT: 14,100
CLINE GULCH RD
FairOver: CLEAR CREEK
100FT E MAIN ST IN FR GUL, Shasta, CA
Built 1968 Load: 45.4 t ADT: 133
STATE ROUTE 3
FairOver: MILL CREEK
02-SIS-003-6.82, Siskiyou, CA
Built 1970 Load: 45.4 t ADT: 190
INGHRAM ROAD
FairOver: RICE CREEK
0.4 MI SOUTH CAPAY ROAD, Tehama, CA
Built 1936 Load: 45.4 t ADT: 100
STATE ROUTE 118
FairOver: ALAMOS CANYON RD
07-VEN-118-R21.86, Ventura, CA
Built 1976 Load: 45.4 t ADT: 41,500
INTERSTATE 80 EB
FairOver: UP RR, BNSF RY, & AMTRAK
03-YOL-080-R10.63-WSAC, Yolo, CA
Built 1970 Load: 45.4 t ADT: 39,500
HOPYARD ROAD SB
FairOver: ARROYO MOCHO
1.5 MI S/O SR 580, Alameda, CA
Built 1967 Load: 45.7 t ADT: 37,800
MATTOLE ROAD
FairOver: SINGLEY CREEK
26.3 MI NORTH OF HONEYDEW, Humboldt, CA
Built 1959 Load: 45.7 t ADT: 308
U. BEAR RIVER ROAD
FairOver: ARROYO CREEK
6.5 MI S OF MATTOLE RD, Humboldt, CA
Built 1960 Load: 45.7 t ADT: 27
INTERSTATE 8 WB
FairOver: DEVIL'S CANYON
11-IMP-008-R4.94L, Imperial, CA
Built 1963 Load: 45.7 t ADT: 7,105
STATE HWY 58 EB
FairOver: BNSF RY
09-KER-058-R141.50, Kern, CA
Built 1971 Load: 45.7 t ADT: 15,400
BALDWIN PARK BLVD
FairOver: WALNUT CR INLET CH
0.3MI S/O I-10 FWY, Los Angeles, CA
Built 1958 Load: 45.7 t ADT: 30,859
GLADSTONE ST
FairOver: LITTLE DALTON WASH
0.1MI W/O AZUSA AVE, Los Angeles, CA
Built 1950 Load: 45.7 t ADT: 7,100
LONE HILL AVE
FairOver: SAN DIMAS WASH
0.6MI S/O US-66 HWY, Los Angeles, CA
Built 1962 Load: 45.7 t ADT: 37,389
PRAIRIE AVE
FairOver: BNSF
0.5MI S/O 190TH ST, Los Angeles, CA
Built 1975 Load: 45.7 t ADT: 52,000
U.S. HIGHWAY 101
FairOver: SOUTH FORK EEL RIVER
01-MEN-101-R102.68, Mendocino, CA
Built 1974 Load: 45.7 t ADT: 6,100
SALMON CREEK ROAD
FairOver: DRAINAGE SALMON CREEK
S OLD MAN RD SEC 26/28, Monterey, CA
Built 1967 Load: 45.7 t ADT: 1
INTERSTATE 80
FairOver: CARPENTER FLAT ROAD
03-PLA-080-R56.06, Placer, CA
Built 1963 Load: 45.7 t ADT: 27,000
REDLANDS BLVD
FairOver: MISSION STORM DRAIN
CALIFORNIA STREET, San Bernardino, CA
Built 1927 Load: 45.7 t ADT: 23,000
ORCHARD ST
FairOver: SAN ANTONIO CREEK CHAN
0.3 MI E LA CO LINE, San Bernardino, CA
Built 1972 Load: 45.7 t ADT: 2,500
WALKER LANE
FairOver: MORMON SLOUGH
0.3 MI S MAIN ST, San Joaquin, CA
Built 1974 Load: 45.7 t ADT: 1,615
I-280 NB OFFRAMP
FairOver: LOS TRANCOS CREEK
04-SM-280-R0.01, San Mateo, CA
Built 1969 Load: 45.7 t ADT: 6,700
NB STATE ROUTE 85
FairOver: SARATOGA CREEK
04-SCL-085-R13.91-SAR, Santa Clara, CA
Built 1994 Load: 45.7 t ADT: 50,000
CALISTOGA RD
FairOver: MARK WEST CREEK
4.2 MI N INTERSECTN SR 12, Sonoma, CA
Built 1967 Load: 45.7 t ADT: 5,800
STATE ROUTE 126
FairOver: SESPE CREEK
07-VEN-126-19.26, Ventura, CA
Built 1954 Load: 45.7 t ADT: 37,500
POWELTON ROAD
FairOver: HENDRICKS CANAL
0.3 MI N SKYWAY, Butte, CA
Built 1968 Load: 46.0 t ADT: 100
INTERSTATE 5
FairOver: CORTINA CREEK
03-COL-005-R12.55, Colusa, CA
Built 1967 Load: 46.0 t ADT: 15,000
HUDSON AVE
FairOver: COLONY MAIN CANAL
0.9 MI SOUTH OF MERRILL, Fresno, CA
Built 1974 Load: 46.0 t ADT: 300
N GLENN AVE
FairOver: DRY CREEK CANAL
SOUTH OF OLIVE AVE, Fresno, CA
Built 1935 Load: 46.0 t ADT: 923
UNION AVE-W178 ON
FairOver: UP RR & ESPEE STREET
06-KER-178-R2.09-BKD, Kern, CA
Built 1967 Load: 46.0 t ADT: 5,100
BARRANCA AVE N
FairOver: BIG DALTON WASH
0.1MI N/O GLADESTONE ST, Los Angeles, CA
Built 1960 Load: 46.0 t ADT: 20,785
ELM AND MUSCATEL
FairOver: EATON WASH
0.1MI N/O LAS TUNAS DR, Los Angeles, CA
Built 1933 Load: 46.0 t ADT: 7,166
Showing 16,301-16,350 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.