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
E SHAW AVE
FairOver: ENTERPRISE CANAL
0.75 MI EAST OF MCCALL AV, Fresno, CA
Built 1925 Load: 24.6 t ADT: 7,000
COUNTY RD NO.6
FairOver: TEHAMA-COLUSA CANAL
0.2 MI E OF RD 'N', Glenn, CA
Built 1965 Load: 24.6 t ADT: 213
RANCHERIA ROAD
FairOver: KERN RIVER
0.7 MI NORTH OF SR 178, Kern, CA
Built 1952 Load: 24.6 t ADT: 412
GRANGEVILLE
FairOver: CROSS CREEK
1.0 MI E/O 5TH AVE, Kings, CA
Built 1966 Load: 24.6 t ADT: 3,375
UTICA AVE
FairOver: CALIFORNIA AQUEDUCT
0.8 MI W OF I-5, Kings, CA
Built 1965 Load: 24.6 t ADT: 50
ELK MTN RD
FairOver: OVERFLOW CHANNEL
1.38 MI N OF SR 20, Lake, CA
Built 1958 Load: 24.6 t ADT: 1,061
STATE ROUTE 57
FairOver: DIAMOND BAR BLVD
07-LA-057-R1.94-DMBR, Los Angeles, CA
Built 1972 Load: 24.6 t ADT: 198,000
FIFTH ST
FairOver: LITTLE DALTON WASH
0.5MI E/O AZUSA AVE, Los Angeles, CA
Built 1960 Load: 24.6 t ADT: 1,273
CERRITOS AVE
FairOver: LITTLE DALTON WASH
0.4MI S/O FOOTHILL BLVD, Los Angeles, CA
Built 1960 Load: 24.6 t ADT: 2,140
ROAD 613
FairOver: CHOWCHILLA RIVER
4 MI W OF ROAD 800, Madera, CA
Built 1982 Load: 24.6 t ADT: 112
AVENUE 27 1/2
FairOver: MADERA CANAL
0.5 MI EAST OF RD 23, Madera, CA
Built 1948 Load: 24.6 t ADT: 25
AVENUE 26
FairOver: CHOWCHILLA RIVER
0.6 MI E OF RD 11, Madera, CA
Built 1971 Load: 24.6 t ADT: 225
ROAD 9
FairOver: ASH SLOUGH
0.15 MI N OF AVE 221/2, Madera, CA
Built 1967 Load: 24.6 t ADT: 282
ISLAND DR (D300)
FairOver: FRESNO RIVER
0.3 MI NW RIVER RD (400), Madera, CA
Built 1973 Load: 24.6 t ADT: 258
U.S. HIGHWAY 101
FairOver: MILLER CREEK
04-MRN-101-15.35, Marin, CA
Built 1952 Load: 24.6 t ADT: 151,000
STATE ROUTE 140
FairOver: MILES CREEK
10-MPA-140-3.81, Mariposa, CA
Built 1928 Load: 24.6 t ADT: 4,650
REEVES CANYON ROAD
FairOver: MILL CREEK
4.5 MI W US 101, Mendocino, CA
Built 1980 Load: 24.6 t ADT: 105
STATE ROUTE 152
FairOver: CCID MAIN CANAL
10-MER-152-19.52-LBNS, Merced, CA
Built 1923 Load: 24.6 t ADT: 28,000
INTERSTATE 5 SB
FairOver: SAN LUIS WASTEWAY
10-MER-005-21.42, Merced, CA
Built 1966 Load: 24.6 t ADT: 15,500
INTERSTATE 5 NB
FairOver: SAN LUIS WASTEWAY
10-MER-005-21.42, Merced, CA
Built 1966 Load: 24.6 t ADT: 17,300
WHEALAN ROAD
FairOver: MILES CREEK
0.3 MI N MISSION AVE, Merced, CA
Built 1968 Load: 24.6 t ADT: 218
NO DATA ENTERED
FairOver: LASSEN CREEK
NO DATA ENTERED, Modoc, CA
Built 1962 Load: 24.6 t ADT: 50
STATE ROUTE 174
FairOver: UP RR, BNSF RY, & AMTRAK
03-PLA-174-0.62-CFX, Placer, CA
Built 1938 Load: 24.6 t ADT: 4,950
INTERSTATE 80
FairOver: LONG RAVINE
03-PLA-080-35.10, Placer, CA
Built 1958 Load: 24.6 t ADT: 26,500
JOINER PARKWAY SB
FairOver: AUBURN RAVINE
0.1 MI N/O MOORE ROAD, Placer, CA
Built 1988 Load: 24.6 t ADT: 7,292
STATE ROUTE 70
FairOver: BIG GRIZZLY CREEK
02-PLU-070-R78.64, Plumas, CA
Built 1969 Load: 24.6 t ADT: 3,400
CHANDLER ROAD
FairOver: SPANISH CR & GREENHRN CR
INTERSECT OAKLAND CAMP RD, Plumas, CA
Built 1953 Load: 24.6 t ADT: 520
RAILROAD AVE
FairOver: FORNAT WASH
2.9 MI. W/O VERBENIA AVE, Riverside, CA
Built 1934 Load: 24.6 t ADT: 240
HEDGE AVE
FairOver: MORRISON CREEK
0.1 MI N ALDER AVE, Sacramento, CA
Built 1979 Load: 24.6 t ADT: 1,200
ROUTE 40 E BOUND
FairOver: MONTARA RD
08-SBD-040-0.79-BSW, San Bernardino, CA
Built 1961 Load: 24.6 t ADT: 19,500
STATE ROUTE 210 EB
FairOver: EAST TWIN CREEK CHANNEL
08-SBD-210-R24.76-SBD, San Bernardino, CA
Built 1968 Load: 24.6 t ADT: 54,500
PACIFIC STREET
FairOver: DEL ROSA STORM DRAIN
0.3 MI W OF DEL ROSA AVE, San Bernardino, CA
Built 1940 Load: 24.6 t ADT: 9,832
BASILONE ROAD
FairOver: SANTA MARGARITA RIVER
0.3 MILE NW OF VANDEGRIFT, San Diego, CA
Built 2000 Load: 24.6 t ADT: 10,550
U.S. HIGHWAY 101
FairOver: LINCOLN BLVD
04-SF-101-0.00, San Francisco, CA
Built 1937 Load: 24.6 t ADT: 114,400
INTERSTATE 5
FairOver: BUENA VISTA UC
10-SJ-005-27.28-STKN, San Joaquin, CA
Built 1970 Load: 24.6 t ADT: 113,000
LOWER SACRAMENTO R
FairOver: MOKELUMNE RIVER OVERFLOW
0.7 MI N TURNER RD, San Joaquin, CA
Built 1969 Load: 24.6 t ADT: 9,943
CAROLYN WESTON BLV
FairOver: FRENCH CAMP SLOUGH
0.7 MI WEST OF MANTHEY RD, San Joaquin, CA
Built 1997 Load: 24.6 t ADT: 16,700
WILLOW ST
FairOver: GUADALUPE RIVER
NR MINNESOTA AVE, Santa Clara, CA
Built 1917 Load: 24.6 t ADT: 6,868
INTERSTATE 5 NB
FairOver: O'BRIEN ROAD
02-SHA-005-R32.16R, Shasta, CA
Built 1968 Load: 24.6 t ADT: 9,150
RIVERSIDE ROAD
FairOver: SACRAMENTO RIVER
0.1 MI E/O I-5 FRONT RD, Shasta, CA
Built 1940 Load: 24.6 t ADT: 234
WYNDHAM LN
FairOver: A.C.I.D. CANAL
AT EASTSIDE ROAD, Shasta, CA
Built 1980 Load: 24.6 t ADT: 650
AGER ROAD
FairOver: OREGON SLOUGH
0.45 MI S RESERVOIR RD, Siskiyou, CA
Built 1980 Load: 24.6 t ADT: 841
CARIBOU RD
FairOver: SOUTH FORK SALMON RIVER
4 MI S CECILVILLE RD, Siskiyou, CA
Built 1965 Load: 24.6 t ADT: 100
BYRNES RD
FairOver: HORSE CREEK
1.5 MI S KILKENNY RD, Solano, CA
Built 1977 Load: 24.6 t ADT: 655
GUERNEVILLE RD
FairOver: LAGUNA DE SANTA ROSA
1.8 MI E/O SR 116, Sonoma, CA
Built 1957 Load: 24.6 t ADT: 8,400
NEELEY ROAD
FairOver: HILLSIDE
1 MI W SR 116, Sonoma, CA
Built 2006 Load: 24.6 t ADT: 3,000
SANTA FE AVENUE
FairOver: M.I.D. LATERAL #3
JUST N OF PARKER RD, Stanislaus, CA
Built 1951 Load: 24.6 t ADT: 555
PLEASANT GROVE RD
FairOver: BEAR RIVER
0.4 MI N/O BEAR RIVER DR, Sutter, CA
Built 1961 Load: 24.6 t ADT: 2,081
BISHOP ROAD
FairOver: SUTTER-BUTTE CANAL
0.2 MI E OF KENT RD, Sutter, CA
Built 1950 Load: 24.6 t ADT: 95
STATE ROUTE 3
FairOver: MULE CREEK
02-TRI-003-48.53, Trinity, CA
Built 1960 Load: 24.6 t ADT: 865
Showing 10,701-10,750 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.