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
INTERSTATE 80
FairOver: UP RR, BNSF RY, & AMTRAK
03-PLA-080-29.51, Placer, CA
Built 1958 Load: 39.9 t ADT: 33,000
STAMPFLI LN
FairOver: INDIAN CREEK
0.6 MI E OF SR 89, Plumas, CA
Built 1954 Load: 39.9 t ADT: 370
W10-S15 CONNECTOR
FairOver: UPRR & AMTRAK
08-SBD-010-9.92-ONT, San Bernardino, CA
Built 1978 Load: 39.9 t ADT: 29,000
K STREET
FairOver: LYTLE CREEK CHANNEL
0.15 MI N MILL ST, San Bernardino, CA
Built 1973 Load: 39.9 t ADT: 4,030
PRIVATE DRIVE
FairOver: NOJOQUI CREEK
05-SB-101-54.40, Santa Barbara, CA
Built 1956 Load: 39.9 t ADT: 10
E CLIFF DR
FairOver: SAN LORENZO RIVER
0.1 MI N/O BUENA VISTA DR, Santa Cruz, CA
Built 1926 Load: 39.9 t ADT: 14,928
INTERSTATE 5
FairOver: GUYS GULCH
02-SIS-005-R39.27, Siskiyou, CA
Built 1969 Load: 39.9 t ADT: 8,300
US HIGHWAY 101
FairOver: PRUITT CREEK
04-SON-101-27.39, Sonoma, CA
Built 1962 Load: 39.9 t ADT: 62,000
STATE ROUTE 132
FairOver: M.I.D. CANAL LATERAL 4
10-STA-132-12.18, Stanislaus, CA
Built 1919 Load: 39.9 t ADT: 11,900
STATE ROUTE 99 NB
FairOver: UP RR
10-STA-099-R3.18-TUR, Stanislaus, CA
Built 1973 Load: 39.9 t ADT: 41,475
STATE ROUTE 36
FairOver: SUPAN GULCH
02-TEH-036-53.85, Tehama, CA
Built 1961 Load: 39.9 t ADT: 2,025
RED BANK RD
FairOver: HUNGRY HOLLOW
0.1 MI N LOWERY RD, Tehama, CA
Built 1974 Load: 39.9 t ADT: 440
U.S. HWY 101 SB
FairOver: TELEPHONE RD
07-VEN-101-25.97-VEN, Ventura, CA
Built 1961 Load: 39.9 t ADT: 57,500
NORTH EARL ROAD
FairOver: BRANCH OF HUTCHINSON CRE
1.3 MILES NORTH OF INTER, Yuba, CA
Built 2018 Load: 39.9 t ADT: 50
LARKIN RD
FairOver: FEATHER RIVER OUTLET
1 MI E/O HAMILTON RD, Butte, CA
Built 1966 Load: 40.2 t ADT: 1,403
EL CAPITAN DR
FairOver: SAN RAMON CREEK
3000 FT E CAMINO RAMON, Contra Costa, CA
Built 1975 Load: 40.2 t ADT: 3,523
LEONARD AVE
FairOver: POSO CREEK
0.5 MI S ELMO HIGHWAY, Kern, CA
Built 1966 Load: 40.2 t ADT: 80
ANDERSON SPRINGS R
FairOver: ANDERSON CREEK
0.8 MI W OF SR 175, Lake, CA
Built 1940 Load: 40.2 t ADT: 154
STATE ROUTE 36
FairOver: ROBBERS CREEK
02-LAS-036-3.15, Lassen, CA
Built 1924 Load: 40.2 t ADT: 2,300
STATE ROUTE 2 WB
FairOver: ROSEBUD AVE
07-LA-002-14.84-LA, Los Angeles, CA
Built 1962 Load: 40.2 t ADT: 30,500
KNOTT AVE
FairOver: COYOTE CRK
0.1MI N/O I-5 FWY, Los Angeles, CA
Built 1967 Load: 40.2 t ADT: 12,495
STATE ROUTE 139
FairOver: UP RR
02-MOD-139-30.63, Modoc, CA
Built 1954 Load: 40.2 t ADT: 2,000
LINCOLN AVENUE
FairOver: NAPA RIVER
JUST W SR 121, Napa, CA
Built 1956 Load: 40.2 t ADT: 16,188
INTERSTATE 80
FairOver: UP RR, BNSF RY, & AMTRAK
03-PLA-080-R20.59, Placer, CA
Built 1973 Load: 40.2 t ADT: 55,000
INTERSTATE 5 NB
FairOver: HOSPITAL ROAD
10-SJ-005-R21.70, San Joaquin, CA
Built 1971 Load: 40.2 t ADT: 42,250
KAISER ROAD
FairOver: N FK S LITTLEJOHNS CREEK
1.5 MI S MARIPOSA RD, San Joaquin, CA
Built 1954 Load: 40.2 t ADT: 76
CUNNINGHAM AVE
FairOver: SILVER CREEK
WEST OF WHITE RD, Santa Clara, CA
Built 1976 Load: 40.2 t ADT: 2,300
SOUTH FORK ROAD
FairOver: SOUTH FORK SCOTT RIVER
E/O CECILVILLE ROAD, Siskiyou, CA
Built 1969 Load: 40.2 t ADT: 49
US HIGHWAY 101 NB
FairOver: POOL CREEK
04-SON-101-27.97, Sonoma, CA
Built 1962 Load: 40.2 t ADT: 62,000
AUSTIN CREEK ROAD
FairOver: HILLSIDE
JUST S/O KRAMER ROAD, Sonoma, CA
Built 2015 Load: 40.2 t ADT: 200
BOGGS CHAMPLIN RD
FairOver: MILL CREEK
0.4 MI N PASKENTA RD, Tehama, CA
Built 1941 Load: 40.2 t ADT: 50
CANYON CREEK ROAD
FairOver: CANYON CREEK
12.4 M N JUNCTION CITY, Trinity, CA
Built 1955 Load: 40.2 t ADT: 65
EAST HETTENSHAW RD
FairOver: VAN DUZEN RIVER
100' SOUTH RUTH-ZENIA RD, Trinity, CA
Built 1950 Load: 40.2 t ADT: 10
LITTLE BROWN CK RD
FairOver: LITTLE BROWNS CREEK
2.0 MI N/E S.R. 299, Trinity, CA
Built 1974 Load: 40.2 t ADT: 155
ROAD 124
FairOver: ELK BAYOU
0.7 MI N OF AVE 200, Tulare, CA
Built 1962 Load: 40.2 t ADT: 1,230
PORTER RD
FairOver: PORTER SLOUGH
0.1 MI S OF MORTON AVE, Tulare, CA
Built 1955 Load: 40.2 t ADT: 7,500
AVE 422
FairOver: ALTA CANAL
0.9 MI E OF SR 63, Tulare, CA
Built 1950 Load: 40.2 t ADT: 250
STATE ROUTE 33
FairOver: VENTURA AVE (SOUTH)
07-VEN-033-R4.05, Ventura, CA
Built 1970 Load: 40.2 t ADT: 13,750
STATE ROUTE 33
FairOver: VENTURA AVE (SOUTH)
07-VEN-033-R4.03, Ventura, CA
Built 1970 Load: 40.2 t ADT: 13,750
CYPRESS ST
FairOver: LITTLE CHICO CREEK
BTW HUMBOLDT AV & 12TH ST, Butte, CA
Built 1961 Load: 40.5 t ADT: 4,792
ALGIERS STREET
FairOver: ANGELS CREEK
0.2 MI S OF MAIN STREET, Calaveras, CA
Built 1940 Load: 40.5 t ADT: 1,032
OLIVERA ROAD
FairOver: EBMUD SERVICE ROAD
04-CC-242-R2.80-CND, Contra Costa, CA
Built 1978 Load: 40.5 t ADT: 24,360
N GARFIELD AVE
FairOver: HERNDON CANAL
0.01 MI SOUTH OF BARSTOW, Fresno, CA
Built 1955 Load: 40.5 t ADT: 693
INTERSTATE 5
FairOver: STONY CREEK
03-GLE-005-R26.88, Glenn, CA
Built 1966 Load: 40.5 t ADT: 12,300
STATE ROUTE 98
FairOver: ALAMO RIVER
11-IMP-098-39.92, Imperial, CA
Built 1977 Load: 40.5 t ADT: 2,800
STATE ROUTE 58
FairOver: WHITE WOLF EQUIPMENT UC
06-KER-058-75.17, Kern, CA
Built 1960 Load: 40.5 t ADT: 24,200
LERDO HIGHWAY
FairOver: WESTSIDE CANAL
0.8 MI OF MAIN DRAIN RD, Kern, CA
Built 1968 Load: 40.5 t ADT: 1,200
TEMPLE AVE
FairOver: SPTCO / SAN JOSE CRK
0.3MI E/O POMONA BLVD, Los Angeles, CA
Built 1972 Load: 40.5 t ADT: 33,800
RUSH ST
FairOver: ALHAMBRA WASH
0.4MI E/O SN GABRIEL BLVD, Los Angeles, CA
Built 1974 Load: 40.5 t ADT: 8,240
EMERSON PL
FairOver: ALHAMBRA WASH
0.3MI N/O GARVEY BLVD, Los Angeles, CA
Built 1952 Load: 40.5 t ADT: 5,253
Showing 15,851-15,900 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.