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 99 NB
FairOver: BIKE PATH
03-BUT-099-R34.63-CHC, Butte, CA
Built 1966 Load: 28.5 t ADT: 24,750
ERICKSON RD
FairOver: WESTERN CANAL
0.3 MI S NELSON SHIPEE RD, Butte, CA
Built 1950 Load: 28.5 t ADT: 80
STATE ROUTE 45
FairOver: HIGH DITCH
03-COL-045-4.05, Colusa, CA
Built 1980 Load: 28.5 t ADT: 1,000
SAND CREEK RD
FairOver: SAND CREEK
WEST OF MISTLETOE LANE, Fresno, CA
Built 1945 Load: 28.5 t ADT: 300
STATE ROUTE 162
FairOver: PRINCETON-CODORA CANAL
03-GLE-162-76.25, Glenn, CA
Built 1963 Load: 28.5 t ADT: 2,600
STATE ROUTE 162
FairOver: SOUTH FORK WILLOW CREEK
03-GLE-162-62.50, Glenn, CA
Built 1981 Load: 28.5 t ADT: 800
ALDERPOINT RD
FairOver: LARABEE CREEK
15.5 MI N ALDER POINT, Humboldt, CA
Built 1966 Load: 28.5 t ADT: 124
RIVER BAR ROAD
FairOver: BARBER CREEK WASH
0.6 MI SOUTH OF RTE 36, Humboldt, CA
Built 1970 Load: 28.5 t ADT: 351
STATE ROUTE 86 NB
FairOver: SAN FELIPE CREEK
11-IMP-086-43.30, Imperial, CA
Built 1947 Load: 28.5 t ADT: 6,150
AIRPORT DRIVE
FairOver: BEARDSLEY CANAL
0.1 MI S OF OLIVE DR, Kern, CA
Built 1951 Load: 28.5 t ADT: 25,500
ELDER AVE
FairOver: LAST CHANCE DITCH
0.9 MI E OF 14TH AVE, Kings, CA
Built 1963 Load: 28.5 t ADT: 350
INTERSTATE 5
FairOver: RIVERSIDE DR
07-LA-005-21.94-LA, Los Angeles, CA
Built 1961 Load: 28.5 t ADT: 283,000
STATE ROUTE 60
FairOver: RIO HONDO
07-LA-060-8.89, Los Angeles, CA
Built 1966 Load: 28.5 t ADT: 224,000
N2-W210 CONNECTOR
FairOver: WALTONIA DR
07-LA-002-R23.15-LCF, Los Angeles, CA
Built 1972 Load: 28.5 t ADT: 27,400
BOUQUET CYN RD
FairOver: BOUQUET CYN CRK
4MI N/O SOLEDAD CYN RD, Los Angeles, CA
Built 1969 Load: 28.5 t ADT: 9,627
OLD TOPANGA CYN RD
FairOver: OLD TOPANGA CRK
1.4MI W/O TOPANGA CYN BL, Los Angeles, CA
Built 1937 Load: 28.5 t ADT: 2,712
FIRESTONE BLVD S
FairOver: COYOTE CRK NF
0.4MI W/O VALLEY VIEW AVE, Los Angeles, CA
Built 1959 Load: 28.5 t ADT: 3,022
GREYSTONE AVE
FairOver: SAWPIT WASH
0.2MI E/O MOUNTAIN AVE, Los Angeles, CA
Built 1957 Load: 28.5 t ADT: 5,304
AVE 18 1/2
FairOver: DRY CREEK
0.1 MI W RD 24, Madera, CA
Built 1971 Load: 28.5 t ADT: 596
STATE ROUTE 140
FairOver: MILES CREEK
10-MPA-140-3.46, Mariposa, CA
Built 1916 Load: 28.5 t ADT: 4,650
STATE ROUTE 41
FairOver: BIG CREEK
06-MPA-041-3.48, Mariposa, CA
Built 1931 Load: 28.5 t ADT: 2,300
BEN HUR ROAD
FairOver: CHAPMAN CREEK
3.5 MI N PRESTON ROAD, Mariposa, CA
Built 1967 Load: 28.5 t ADT: 90
SLAUGHTERHOUSE RD
FairOver: STOCKTON CREEK
0.2 MI EAST OF SR 140, Mariposa, CA
Built 1974 Load: 28.5 t ADT: 8
ORR SPRINGS RD
FairOver: ACKERMAN CREEK
2.0 MI W US 101, Mendocino, CA
Built 1956 Load: 28.5 t ADT: 3,101
OAK AVENUE
FairOver: BLACK RASCAL CREEK
0.3 MI E APPLEGATE ROAD, Merced, CA
Built 1960 Load: 28.5 t ADT: 200
VOLTA ROAD
FairOver: CCID MAIN CANAL
AT RAMOS ROAD, Merced, CA
Built 1973 Load: 28.5 t ADT: 1,280
HENRY MILLER AVE
FairOver: SANTA FE CANAL
0.3 MI EAST OF SR 165, Merced, CA
Built 1970 Load: 28.5 t ADT: 2,310
ALMOND DRIVE
FairOver: OUTSIDE CANAL
0.4 MI WEST OF SR 165, Merced, CA
Built 1968 Load: 28.5 t ADT: 334
S. PERIMETER ROAD
FairOver: LAGUNA SECA RACETRACK
1.2 MILES E. OF HWY 68, Monterey, CA
Built 1980 Load: 28.5 t ADT: 150
INTERSTATE 10 EB
FairOver: FORNAT WASH
08-RIV-010-R21.67, Riverside, CA
Built 1940 Load: 28.5 t ADT: 45,500
INTERSTATE 15 SB
FairOver: WARM SPRINGS CREEK
08-RIV-015-7.78-TMCA, Riverside, CA
Built 1951 Load: 28.5 t ADT: 64,750
STATE ROUTE 60
FairOver: SAN SEVAINE CHANNEL
08-RIV-060-R2.64, Riverside, CA
Built 1970 Load: 28.5 t ADT: 170,000
FRANKLIN BLVD
FairOver: SOUTH FORK ELDER CREEK
0.1 MI N OF MACK RD, Sacramento, CA
Built 1987 Load: 28.5 t ADT: 23,132
VAN MAREN LANE
FairOver: CRIPPLE CREEK
0.8 MI N AUBURN BL, Sacramento, CA
Built 1960 Load: 28.5 t ADT: 16,120
INTERSTATE 10 EB
FairOver: OAK GLEN CREEK
08-SBD-010-R36.90-YUCP, San Bernardino, CA
Built 1964 Load: 28.5 t ADT: 61,000
INTERSTATE 15 NB
FairOver: KENWOOD AVENUE
08-SBD-015-R14.96, San Bernardino, CA
Built 1969 Load: 28.5 t ADT: 79,500
CHRISMAN RD
FairOver: CALIFORNIA AQUEDUCT
0.5 MI N OF S.H. 132, San Joaquin, CA
Built 1965 Load: 28.5 t ADT: 1,000
ORCUTT ROAD
FairOver: WEST CORRAL DE PIEDRA CR
0.25 MI SE BIDDLE ROAD, San Luis Obispo, CA
Built 1949 Load: 28.5 t ADT: 2,438
STATE ROUTE 33
FairOver: QUATAL CANYON
05-SB-033-1.84, Santa Barbara, CA
Built 1953 Load: 28.5 t ADT: 455
STOW CANYON RD
FairOver: SAN PEDRO CREEK
0.57 MI W/O FAIRVIEW AVE, Santa Barbara, CA
Built 1967 Load: 28.5 t ADT: 1,259
JALAMA RD
FairOver: SALSIPUEDES CREEK
2.1 MI S OF S.H. 1, Santa Barbara, CA
Built 1942 Load: 28.5 t ADT: 669
BERRYESSA RD
FairOver: COYOTE CREEK
0.5 MI NORTH OF US 101, Santa Clara, CA
Built 1971 Load: 28.5 t ADT: 12,480
DOG CREEK ROAD
FairOver: CLEAR CREEK
2.0 MI E/O EAST SIDE RD, Shasta, CA
Built 1936 Load: 28.5 t ADT: 50
SCOTT RIVER RD
FairOver: MIDDLE CREEK
1.4 MI N KELSEY CREEK RD, Siskiyou, CA
Built 1900 Load: 28.5 t ADT: 135
US HIGHWAY 101 NB
FairOver: ASTI STORE RD
04-SON-101-R47.85, Sonoma, CA
Built 1964 Load: 28.5 t ADT: 10,800
RIVER RD
FairOver: MARK WEST CR, TRENTON RD
4.8 MI WEST OF US 101, Sonoma, CA
Built 1960 Load: 28.5 t ADT: 11,700
MONTE VISTA TERR
FairOver: HILLSIDE
IN MONTE RIO, Sonoma, CA
Built 2001 Load: 28.5 t ADT: 200
W SODA ROCK LANE
FairOver: HILLSIDE
1 MI SE ALEXANDER VALY RD, Sonoma, CA
Built 1968 Load: 28.5 t ADT: 100
MCCRACKEN ROAD
FairOver: CALIFORNIA AQUEDUCT
1.1 MI S HAMILTON ROAD, Stanislaus, CA
Built 1966 Load: 28.5 t ADT: 296
KIRKWOOD ROAD
FairOver: BRANNIN CREEK
0.7 MI S FLOURNOY AVE, Tehama, CA
Built 1920 Load: 28.5 t ADT: 779
Showing 11,451-11,500 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.