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
AVE 178 (MTN VIEW)
FairOver: FRIANT-KERN CANAL
0.25 MI WEST OF ROAD 232, Tulare, CA
Built 1949 Load: 16.5 t ADT: 150
ROAD 136
FairOver: NORTH BRANCH TULE RIVER
0.1 MI S OF A186, Tulare, CA
Built 1940 Load: 16.5 t ADT: 75
RAWHIDE RD
FairOver: PEPPERMINT CREEK
0.3 MI NW/O SR49, Tuolumne, CA
Built 1930 Load: 16.5 t ADT: 4,149
SOULSBYVILLE ROAD
FairOver: CURTIS CREEK
0.8 MI SOUTH OF SR 108, Tuolumne, CA
Built 1930 Load: 16.5 t ADT: 3,708
STATE ROUTE 16
FairOver: TAYLOR CREEK
03-YOL-016-20.14, Yolo, CA
Built 1912 Load: 16.5 t ADT: 12,000
COUNTY ROAD 88
FairOver: WINTERS CANAL
0.15 MI N OF C.R. #29, Yolo, CA
Built 1930 Load: 16.5 t ADT: 115
ERLE RD
FairOver: SOUTH FORK REEDS CREEK
1 MI E/O VIRGINIA RD, Yuba, CA
Built 1909 Load: 16.5 t ADT: 190
LOFGREN ROAD
FairOver: IRRIGATION LATERAL
1 MI W MIDWAY RD, Butte, CA
Built 1920 Load: 16.7 t ADT: 20
HOLMES FLAT RD
FairOver: EEL RIVER
NEAR HOLMES, Humboldt, CA
Built 1999 Load: 16.7 t ADT: 100
DECOTO ROAD
FairOver: ALAMEDA CREEK TRIBUTARY
JUST S/O NILES BLVD, Alameda, CA
Built 1920 Load: 16.8 t ADT: 35,700
PARK BOULEVARD
FairOver: HILLSIDE
0.5 MI S OF SR 13, Alameda, CA
Built 1932 Load: 16.8 t ADT: 18,753
PARK BOULEVARD
FairOver: HILLSIDE
0.4 MI SW OF SR 13, Alameda, CA
Built 1932 Load: 16.8 t ADT: 18,753
LEIMERT BLVD
FairOver: SAUSAL CREEK
0.1 MI E OF PARK BLVD, Alameda, CA
Built 1926 Load: 16.8 t ADT: 7,335
FOOTHILL BLVD
FairOver: SAN LORENZO CREEK
150 FT SE CITY CENTER DR, Alameda, CA
Built 1909 Load: 16.8 t ADT: 50,000
STATE ROUTE 99
FairOver: BIGGS EXTENSION CANAL
03-BUT-099-9.21, Butte, CA
Built 1921 Load: 16.8 t ADT: 11,050
SKYWAY RD WB
FairOver: BUTTE CREEK
0.5 MI SE OF HUMBUG RD, Butte, CA
Built 1949 Load: 16.8 t ADT: 12,054
PALERMO-HONCUT HWY
FairOver: EAST BRANCH WYANDOTTE CR
1.5 MI N LOWER HONCUT RD, Butte, CA
Built 1960 Load: 16.8 t ADT: 158
DAYTON RD
FairOver: LITTLE CHICO CREEK
AT ORANGE ST, Butte, CA
Built 1940 Load: 16.8 t ADT: 6,112
BANGOR HWY
FairOver: BRANCH ROCKYHONCUT CREEK
1.7 MI N OF LA PORTE RD, Butte, CA
Built 1940 Load: 16.8 t ADT: 1,740
MEAD AVE
FairOver: BRNCH SUTTER-BUTTE CANAL
0.2 MI N/O SOUTH AVE, Butte, CA
Built 1938 Load: 16.8 t ADT: 100
PRYDE AVE
FairOver: NO NAME DRAIN
0.2 MI E/O RAILROAD AVE, Butte, CA
Built 1936 Load: 16.8 t ADT: 80
FARRIS RD
FairOver: MAIN DRAINAGE CANAL
2 MI W/O BIGGS GRIDLEY RD, Butte, CA
Built 1970 Load: 16.8 t ADT: 89
FARRIS RD
FairOver: MAIN DRAINAGE CANAL
1.5 MI N GRID-COLUSA HWY, Butte, CA
Built 1942 Load: 16.8 t ADT: 89
HOGAN DAM RD
FairOver: COSGROVE CREEK
0.2 MI E/O SR 26, Calaveras, CA
Built 1941 Load: 16.8 t ADT: 1,089
MAIN ST
FairOver: SAN ANDREAS CREEK
IN SAN ANDREAS, Calaveras, CA
Built 1914 Load: 16.8 t ADT: 1,443
HILLGATE ROAD
FairOver: WHISKEY CREEK
0.3 MI E WHISKEY CREEK RD, Colusa, CA
Built 1930 Load: 16.8 t ADT: 484
OLD 99W
FairOver: NORTH BRANCH BRUSH CREEK
0.2 MI N OF PERKINS RD, Colusa, CA
Built 1925 Load: 16.8 t ADT: 1,958
MARSH CREEK RD
FairOver: MARSH CREEK
7.3 MI E MORGAN TERITY RD, Contra Costa, CA
Built 1934 Load: 16.8 t ADT: 5,588
DIABLO RD
FairOver: GREEN VALLEY CREEK
0.5 MI E/O I-680, Contra Costa, CA
Built 1953 Load: 16.8 t ADT: 18,463
PORTAL DR
FairOver: UPPER TRUCKEE RIVER
0.1 MI W OF S.R. 89, El Dorado, CA
Built 1965 Load: 16.8 t ADT: 660
SWEENEY RD
FairOver: N FK COSUMNES RIVER
0.1 MI S OF HAPPY VALLEY, El Dorado, CA
Built 1957 Load: 16.8 t ADT: 790
COUNTRY CLUB DR
FairOver: DEER CREEK
0.3 M EAST OF CAMBRIDGE, El Dorado, CA
Built 1918 Load: 16.8 t ADT: 3,062
S GOLDEN STATE BL
FairOver: FOWLER SWITCH CANAL
0.2 MI N OF DINUBA AVE, Fresno, CA
Built 1912 Load: 16.8 t ADT: 4,000
N RUSSELL AVE
FairOver: DELTA-MENDOTA CANAL
AT ALTHEA AVE, Fresno, CA
Built 1950 Load: 16.8 t ADT: 1,700
S CRAWFORD AVE
FairOver: FRIANT-KERN CANAL
1.85 MI SOUTH OF SR 180, Fresno, CA
Built 1955 Load: 16.8 t ADT: 200
N DEL REY AVE
FairOver: GOULD CANAL
0.5 MI SOUTH OF SHIELDS, Fresno, CA
Built 1950 Load: 16.8 t ADT: 1,200
E FLUME RD
FairOver: FRESNO CANAL
0.3 MI N OF TRIMMER SPR R, Fresno, CA
Built 1940 Load: 16.8 t ADT: 200
S FATIMA AVE
FairOver: MURPHY SLOUGH
0.05 MI N/O RIVERDALE AVE, Fresno, CA
Built 1948 Load: 16.8 t ADT: 200
N JAMESON AVE
FairOver: HERNDON CANAL
0.01 MI NORTH OF BARSTOW, Fresno, CA
Built 1938 Load: 16.8 t ADT: 200
S HILL AVE
FairOver: ALTA EAST BRANCH CANAL
0.7 MI N OF MANNING AVE, Fresno, CA
Built 1940 Load: 16.8 t ADT: 2,900
E AMERICAN AVE
FairOver: NO NAME DITCH
0.6 MI WEST OF SR 63, Fresno, CA
Built 1925 Load: 16.8 t ADT: 1,600
E HUNTSMAN AVE
FairOver: WRISTEN CANAL
0.21 MI W/O TEMPERANCE AV, Fresno, CA
Built 1939 Load: 16.8 t ADT: 400
COUNTY ROAD 'D'
FairOver: WHITE CABIN CREEK
5.8 MI N OF S.H. 162, Glenn, CA
Built 1919 Load: 16.8 t ADT: 351
ROAD 61
FairOver: PRINCETON CODORA CANAL
0.05 MI W OF S.H. 45, Glenn, CA
Built 1930 Load: 16.8 t ADT: 967
COUNTY ROAD Z
FairOver: CAMPBELL SLOUGH
0.96 MI N OF S.H. 162, Glenn, CA
Built 1930 Load: 16.8 t ADT: 586
ROAD 'Y'
FairOver: AFTON DRAIN
1.1 MI N ROAD 69, Glenn, CA
Built 1940 Load: 16.8 t ADT: 207
COUNTY RD 35
FairOver: ARTOIS DRAWLET
JUST W/O ROAD 'H', Glenn, CA
Built 1930 Load: 16.8 t ADT: 85
ROAD XX
FairOver: VANSYCKLE SLOUGH
0.2 MII SOUTH OF ROAD 19, Glenn, CA
Built 1930 Load: 16.8 t ADT: 26
COUNTY RD 306
FairOver: BRANCH STONY CREEK
1 MI N OF RD #303, Glenn, CA
Built 1930 Load: 16.8 t ADT: 235
CO RD 302 \ CLARKS
FairOver: S FK WILLOW CREEK
1.9 MI W SH 162, Glenn, CA
Built 1916 Load: 16.8 t ADT: 46
Showing 8,701-8,750 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.