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
OLD MONTE RIO ROAD
FairOver: HILLSIDE
BTWN SANTA ROSA & DUNCAN, Sonoma, CA
Built 2012 Load: 37.3 t ADT: 100
FORT ROSS ROAD
FairOver: HILLSIDE
1.7 MI W/O KINGS RIDGE RD, Sonoma, CA
Built 2014 Load: 37.3 t ADT: 200
STATE ROUTE 99 SB
FairOver: UP RR
10-STA-099-R3.18-TUR, Stanislaus, CA
Built 1973 Load: 37.3 t ADT: 41,475
GRAYSON ROAD
FairOver: LAIRD SLOUGH
3.1 MI N/E STATE ROUTE 33, Stanislaus, CA
Built 1962 Load: 37.3 t ADT: 5,299
STATE ROUTE 99 SB
FairOver: ELK BAYOU
06-TUL-099-25.01, Tulare, CA
Built 1931 Load: 37.3 t ADT: 23,500
AVENUE 295
FairOver: OUTSIDE CREEK
0.3 MI W OF RD 180, Tulare, CA
Built 1965 Load: 37.3 t ADT: 35
ROAD 176
FairOver: DEER CREEK
1.2 MI S/O AVENUE 96, Tulare, CA
Built 1971 Load: 37.3 t ADT: 250
COUNTY ROAD 95B
FairOver: SYCAMORE SLOUGH
0.10 MI S OF ROUTE 45, Yolo, CA
Built 1961 Load: 37.3 t ADT: 25
IRR BIA RTE 76
FairOver: NORTH FORK OF PIT RIVER
90M W OF RTE 76 & HWY 395, Modoc, CA
Built 2003 Load: 37.5 t ADT: 100
WOLF CREEK RD
FairOver: SILVER CREEK
0.2 MI E/O SR 4, Alpine, CA
Built 1956 Load: 37.6 t ADT: 280
STATE ROUTE 162
FairOver: BIGGS EXTENSION CANAL
03-BUT-162-8.11, Butte, CA
Built 1910 Load: 37.6 t ADT: 930
WHISKEY SLIDE RD
FairOver: JESUS MARIA CREEK
2.7 MI SE OF JESUS MARIA, Calaveras, CA
Built 1936 Load: 37.6 t ADT: 93
LODOGA-STONYFRD RD
FairOver: INDIAN CREEK
23.3 MI W/O 1-5, Colusa, CA
Built 1976 Load: 37.6 t ADT: 296
TWO MILE ROAD
FairOver: PAMELA CREEK
1.6 MI N OF LURLINE AVE, Colusa, CA
Built 1935 Load: 37.6 t ADT: 76
STONE VALLEY RD
FairOver: SAN RAMON CREEK
0.1 MI E DANVILLE BLVD, Contra Costa, CA
Built 1964 Load: 37.6 t ADT: 23,330
WHITE ROAD
FairOver: BELLOMA SLOUGH
400 FT E OF MORDOH ROAD, Contra Costa, CA
Built 1945 Load: 37.6 t ADT: 11
WHITE ROAD
FairOver: CUNNINHAM SLOUGH
40' W OF PIER 3 PK AREA, Contra Costa, CA
Built 1945 Load: 37.6 t ADT: 11
WILLIAMS CREEK RD
FairOver: WILLIAMS CREEK
1.6 MI S GRIZZLY BLUFF RD, Humboldt, CA
Built 1950 Load: 37.6 t ADT: 30
COLE RD
FairOver: CENTRAL MAIN CANAL
160 FT E/O BOWKER RD, Imperial, CA
Built 1971 Load: 37.6 t ADT: 4,900
STATE ROUTE 20
FairOver: MORRISON CREEK
01-LAK-020-16.81, Lake, CA
Built 1933 Load: 37.6 t ADT: 8,900
STATE ROUTE 36
FairOver: SUSAN RIVER
02-LAS-036-R17.38, Lassen, CA
Built 1966 Load: 37.6 t ADT: 2,900
INTERSTATE 110
FairOver: PIPELINE RD
07-LA-110-2.39-LA, Los Angeles, CA
Built 1956 Load: 37.6 t ADT: 93,600
INTERSTATE 210
FairOver: BIG DALTON WASH
07-LA-210-R41.87-GDR, Los Angeles, CA
Built 1969 Load: 37.6 t ADT: 250,000
CESAR E CHAVEZ AVE
FairOver: L A RIVER, UP RR, BNSF
0.2 MI W/O FWY 10, Los Angeles, CA
Built 1926 Load: 37.6 t ADT: 37,152
SOUTHERN AVE
FairOver: RIO HONDO
300FT E/O GARFIELD AVE, Los Angeles, CA
Built 1951 Load: 37.6 t ADT: 15,141
LAS TUNAS DR
FairOver: EATON WASH
0.2MI W/O ROSEMEAD BLVD, Los Angeles, CA
Built 1927 Load: 37.6 t ADT: 21,836
OSBORNE ST
FairOver: KAGEL CANYON WASH
0.7 MI NORTH OF I-210, Los Angeles, CA
Built 1977 Load: 37.6 t ADT: 3,021
AVENUE J
FairOver: LITTLE ROCK CREEK
0.5 MI E/O 50TH ST EAST, Los Angeles, CA
Built 2015 Load: 37.6 t ADT: 3,513
ROAD 9
FairOver: EASTSIDE BYPASS CHANNEL
1.5 MI NORTH OF AVE 14, Madera, CA
Built 1965 Load: 37.6 t ADT: 250
DEER RUN TRAIL
FairOver: LEWIS FORK-FRESNO RIVER
0.2 MI NE CEDAR VALLEY DR, Madera, CA
Built 1968 Load: 37.6 t ADT: 42
STATE ROUTE 20
FairOver: COLD CREEK
01-MEN-020-R37.90, Mendocino, CA
Built 1967 Load: 37.6 t ADT: 10,400
U.S. HIGHWAY 101
FairOver: JITNEY GULCH
01-MEN-101-93.01, Mendocino, CA
Built 1965 Load: 37.6 t ADT: 6,100
STATE ROUTE 128
FairOver: MAPLE CREEK
01-MEN-128-36.15, Mendocino, CA
Built 1939 Load: 37.6 t ADT: 2,050
SANTA FE GRADE
FairOver: LOS BANOS CREEK
1.2 MI N GUN CLUB ROAD, Merced, CA
Built 1974 Load: 37.6 t ADT: 186
STATE ROUTE 1
FairOver: BIXBY CREEK
05-MON-001-59.37, Monterey, CA
Built 1932 Load: 37.6 t ADT: 4,300
US HIGHWAY 101 NB
FairOver: LOCKWOOD SAN LUCAS ROAD
05-MON-101-R30.65, Monterey, CA
Built 1971 Load: 37.6 t ADT: 7,450
BUCKS LAKE ROAD
FairOver: HASKINS CREEK
AT BUCKS LAKE, Plumas, CA
Built 1967 Load: 37.6 t ADT: 360
INTERSTATE 15 NB
FairOver: BERRY DITCH
08-SBD-015-139.22, San Bernardino, CA
Built 1961 Load: 37.6 t ADT: 22,000
INTERSTATE 40
FairOver: SAGE WASH
08-SBD-040-150.25, San Bernardino, CA
Built 1957 Load: 37.6 t ADT: 7,450
INTERSTATE 40 EB
FairOver: ASH HILL WASH
08-SBD-040-R54.77R, San Bernardino, CA
Built 1970 Load: 37.6 t ADT: 8,150
INTERSTATE 40
FairOver: BADGER WASH
08-SBD-040-R75.50, San Bernardino, CA
Built 1972 Load: 37.6 t ADT: 16,500
INTERSTATE 15 SB
FairOver: ABANDONED RR (BIKEPATH)
08-SBD-015-7.08-FNA, San Bernardino, CA
Built 1976 Load: 37.6 t ADT: 80,000
5TH ST
FairOver: WARM CREEK CHANNEL
0.3 MI E WATERMAN AVE, San Bernardino, CA
Built 1960 Load: 37.6 t ADT: 6,491
STATE ROUTE 79
FairOver: MATAGUAL CREEK
11-SD-079-29.47, San Diego, CA
Built 1946 Load: 37.6 t ADT: 2,850
40TH ST
FairOver: SOUTH BRANCH CHOLLAS CRK
0.17 MI S/O NAT'L BLVD, San Diego, CA
Built 1964 Load: 37.6 t ADT: 3,900
DISCOVERY ST
FairOver: SAN MARCOS CREEK
300FT S/O SAN MARCOS BLVD, San Diego, CA
Built 1967 Load: 37.6 t ADT: 12,782
STATE ROUTE 12
FairOver: MOKELUMNE RIVER
10-SJ-012-0.01, San Joaquin, CA
Built 1942 Load: 37.6 t ADT: 15,000
INTERSTATE 580
FairOver: HANSEN ROAD
10-SJ-580-12.03, San Joaquin, CA
Built 1967 Load: 37.6 t ADT: 13,300
NOGAL DRIVE
FairOver: CIENEGUITAS CREEK
0.25 MI S HOLLISTER AVE, Santa Barbara, CA
Built 1993 Load: 37.6 t ADT: 2,500
FOREST HILL DRIVE
FairOver: BEAR CREEK
0.2 MI W BEAR CREEK RD, Santa Cruz, CA
Built 1962 Load: 37.6 t ADT: 1,500
Showing 15,551-15,600 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.