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
ROAD
GoodOver: DALTON CANYON
NO DATA ENTERED, Los Angeles, CA
Built 1940 ADT: 10
ROAD
GoodOver: DALTON CANYON
NO DATA ENTERED, Los Angeles, CA
Built 1940 ADT: 10
FS RD 7N05
GoodOver: LK HUGHES T.T/PINECYNRD
0.5 MI E. OF LK HUGHES, Los Angeles, CA
Built 1982 ADT: 10
ROAD
GoodOver: SAN FRANCISQUITO CREEK
NO DATA ENTERED, Los Angeles, CA
Built 2000 ADT: 1
NO DATA ENTERED
GoodOver: CHIQUITO CREEK
NO DATA ENTERED, Madera, CA
Built 2022 ADT: 80
42N16
GoodOver: PARKER CREEK
WILDLIFE REFUGE BNDRY, Modoc, CA
Built 1969 ADT: 50
FOREST ROAD 22
GoodOver: ASH CREEK
ASH CREEK CAMPGROUND, Modoc, CA
Built 1976 ADT: 50
48N48
GoodOver: LOST RIVER
3 MI E OF HOPELESS PASS, Modoc, CA
Built 1971 ADT: 50
NO DATA ENTERED
GoodOver: DEADMAN CREEK
UPPER DEADMAN, Mono, CA
Built 1998 ADT: 90
NO DATA ENTERED
GoodOver: FERN CREEK
NO DATA ENTERED, Mono, CA
Built 2013 ADT: 60
SAN MIGUELITO LP R
GoodOver: STONEY CREEK
S SAN MIGUELITO RANCH S15, Monterey, CA
Built 1967 ADT: 10
FDR 41
GoodOver: EAST FORK
S30 T19N R12E, Nevada, CA
Built 1972 ADT: 50
FDR 20-17-04
GoodOver: S. YUBA CANAL
S32 T17N R11E, Nevada, CA
Built 1972 ADT: 50
FDR 85
GoodOver: RATTLESNAKE CREEK
S23 T17N R13E, Nevada, CA
Built 1964 ADT: 50
DALBY RD
GoodOver: YANKEE SLOUGH
JUST WEST OF DOWD RD, Placer, CA
Built 1925 ADT: 1,605
WINDING ROAD
GoodOver: RUBICON RIVER
NO DATA ENTERED, Placer, CA
Built 1967 ADT: 50
FDR 44
GoodOver: DEEP CREEK
S30 T15N R13E, Placer, CA
Built 1954 ADT: 50
FDR 23
GoodOver: MIDDLE FK. AMERICAN RIV
S3 T13N R11E, Placer, CA
Built 1964 ADT: 50
NO DATA ENTERED
GoodOver: DUNCAN CREEK
NO DATA ENTERED, Placer, CA
Built 2007 ADT: 50
FDR 19
GoodOver: E.FK. OF N.FK. AMERICAN
S16 T16N R12E, Placer, CA
Built 1949 ADT: 50
NO DATA ENTERED
GoodOver: NF OF NF AMERICAN RIVER
NO DATA ENTERED, Placer, CA
Built 1994 ADT: 50
WINDING
GoodOver: NO DATA ENTERED
NO DATA ENTERED, Placer, CA
Built 1981 ADT: 50
NO DATA ENTERED
GoodOver: WEST BRANCH LIGHTS CREEK
NO DATA ENTERED, Plumas, CA
Built 2022 ADT: 2
ROAD 23N08
GoodOver: POPLAR CREEK
POPLAR CREEK, Plumas, CA
Built 1966 ADT: 50
ROAD 24N85Y
GoodOver: BIG GRIZZLY CREEK
BIG GRIZZLY CREEK, Plumas, CA
Built 1974 ADT: 50
ROAD 22N94
GoodOver: SOUTH BR MIDDLE FORK
NO DATA ENTERED, Plumas, CA
Built 1957 ADT: 60
ROAD 22N94
GoodOver: LGV DAM SPILLWAY APPROCH
500 FT NORTH OF LGV DAM, Plumas, CA
Built 1966 ADT: 50
ROAD 23N10
GoodOver: EAST BRANCH HOPKINS CREK
NO DATA ENTERED, Plumas, CA
Built 1984 ADT: 50
ROAD 22N57
GoodOver: LOWER KENZIE RAVINE
NO DATA ENTERED, Plumas, CA
Built 1960 ADT: 40
ROAD 27N26
GoodOver: MOSQUITO CREEK
CARIBOU ROAD, Plumas, CA
Built 1984 ADT: 50
ROAD 27N17
GoodOver: RUSH CREEK
RUSH CREEK, Plumas, CA
Built 1977 ADT: 25
PAVED ROAD
GoodOver: S.F. DEEP CREEK
1.7 E. OF HWY 18 ON 1N96, San Bernardino, CA
Built 1958 ADT: 80
FOREST ROAD 2N59
GoodOver: SAWPIT CANYON
MP .3 ON RTE 2N59, San Bernardino, CA
Built 1972 ADT: 25
SUNSET VALLEY ROAD
GoodOver: DAVY BROWN CREEK
NO DATA ENTERED, Santa Barbara, CA
Built 2022 ADT: 375
SUNSET VALLEY ROAD
GoodOver: DAVY BROWN CREEK
NO DATA ENTERED, Santa Barbara, CA
Built 2022 ADT: 375
NO DATA ENTERED
GoodOver: BAILEY CREEK
NO DATA ENTERED, Shasta, CA
Built 2020 ADT: 20
NO DATA ENTERED
GoodOver: BAILEY CREEK
NO DATA ENTERED, Shasta, CA
Built 2020 ADT: 20
FIR GULCH
GoodOver: MID. FORK COTTONWOOD CR.
NO DATA ENTERED, Shasta, CA
Built 1981 ADT: 50
FENDER FERRY
GoodOver: POTEM CREEK
NO DATA ENTERED, Shasta, CA
Built 1953 ADT: 50
FENDER FERRY
GoodOver: EYE CREEK
NO DATA ENTERED, Shasta, CA
Built 1936 ADT: 50
BULLY HILL
GoodOver: DIDALLIS CREEK
NO DATA ENTERED, Shasta, CA
Built 1941 ADT: 50
BULLY HILL
GoodOver: WEST FORK DIDALLIS CREEK
NO DATA ENTERED, Shasta, CA
Built 1941 ADT: 50
FORKS FLAT
GoodOver: S BRANCH N FK NOSONI CRK
NO DATA ENTERED, Shasta, CA
Built 1990 ADT: 50
SUMMIT LAKE
GoodOver: NELSON CREEK
NO DATA ENTERED, Shasta, CA
Built 1966 ADT: 50
GABLE
GoodOver: SULANHARAS CREEK
NO DATA ENTERED, Shasta, CA
Built 1989 ADT: 50
HAWKINS CREEK
GoodOver: KOSK CREEK
NO DATA ENTERED, Shasta, CA
Built 1970 ADT: 50
NEW DOG
GoodOver: DOG CREEK
NO DATA ENTERED, Shasta, CA
Built 1985 ADT: 50
WHALEN
GoodOver: NORTH FORK CASTLE CREEK
NO DATA ENTERED, Shasta, CA
Built 1976 ADT: 50
HAZEL CREEK
GoodOver: HAZEL CREEK
NO DATA ENTERED, Shasta, CA
Built 1978 ADT: 50
HAZEL CREEK
GoodOver: HAZEL CREEK
NO DATA ENTERED, Shasta, CA
Built 1978 ADT: 50
Showing 17,051-17,100 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.