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
HAMMOND AVE
FairOver: DRY CREEK CANAL
JUST WEST OF CLARK ST, Fresno, CA
Built 2005 Load: 32.4 t ADT: 1,934
N TEMPERANCE AVE
FairOver: GOULD CANAL
0.2 M N/O DAKOTA AVE, Fresno, CA
Built 2010 Load: 32.4 t ADT: 4,200
MANNING AVE
FairOver: KINGS RIVER
0.5 MI WEST OF REED AVE, Fresno, CA
Built 2015 Load: 32.4 t ADT: 20,125
SHEPHERD AVE
FairOver: DRY CREEK
INTERSECTION N FOWLER AVE, Fresno, CA
Built 2014 Load: 32.4 t ADT: 9,000
STATE ROUTE 162
FairOver: STONY CREEK
03-GLE-162-R45.13, Glenn, CA
Built 1991 Load: 32.4 t ADT: 530
COUNTY ROAD #200
FairOver: BRANCH SALT CREEK
0.6 MI W OF RD #306, Glenn, CA
Built 1997 Load: 32.4 t ADT: 400
ROAD 28
FairOver: BRANCH WALKER CREEK
0.5 MI EAST OF RD 'F', Glenn, CA
Built 1984 Load: 32.4 t ADT: 235
CO RD H \ GLENN AV
FairOver: HAMBRIGHT CREEK
0.5 MI SOUTH OF RD 9, Glenn, CA
Built 1990 Load: 32.4 t ADT: 650
BAYLIS BLUE GUM RD
FairOver: PRINCETON-CODORA CANAL
0.15 MI W OF SR 45, Glenn, CA
Built 1989 Load: 32.4 t ADT: 1,243
CO ROAD 200A
FairOver: HAMBRIGHT CREEK
3.1 MI SE OF RD #200, Glenn, CA
Built 1975 Load: 32.4 t ADT: 99
ROAD 'D'
FairOver: BRANCH WALKER CREEK
1.0 MI N/O ROAD 28, Glenn, CA
Built 1973 Load: 32.4 t ADT: 84
ROAD KK
FairOver: WILLOW CREEK
0.7 MI N OF RD 48, Glenn, CA
Built 1940 Load: 32.4 t ADT: 21
COUNTY ROAD P
FairOver: STONY CREEK
COUNTY ROAD P, Glenn, CA
Built 2003 Load: 32.4 t ADT: 620
COUNTY RD 33
FairOver: WALKER CREEK
0.4 MI E OF 1-5, Glenn, CA
Built 2006 Load: 32.4 t ADT: 489
US HIGHWAY 101 NB
FairOver: EEL RIVER
01-HUM-101-M53.91-RDEL, Humboldt, CA
Built 1941 Load: 32.4 t ADT: 4,400
US HIGHWAY 101 SB
FairOver: GANNON SLOUGH
01-HUM-101-84.70, Humboldt, CA
Built 1996 Load: 32.4 t ADT: 17,500
U.S. HIGHWAY 101
FairOver: PRAIRIE CREEK
01-HUM-101-122.86, Humboldt, CA
Built 1989 Load: 32.4 t ADT: 3,700
STATE ROUTE 36
FairOver: VAN DUZEN RIVER
01-HUM-036-13.37, Humboldt, CA
Built 1984 Load: 32.4 t ADT: 1,650
STATE ROUTE 169
FairOver: COON CREEK
01-HUM-169-25.81, Humboldt, CA
Built 1988 Load: 32.4 t ADT: 320
US HIGHWAY 101 SB
FairOver: EEL RIV,EDWARDS DR,NCRRA
01-HUM-101-R51.99, Humboldt, CA
Built 1976 Load: 32.4 t ADT: 8,200
STATE ROUTE 255
FairOver: MCDANIEL SLOUGH
01-HUM-255-7.77, Humboldt, CA
Built 1963 Load: 32.4 t ADT: 4,160
STATE ROUTE 255
FairOver: EUREKA CHANNEL
01-HUM-255-0.20-EUR, Humboldt, CA
Built 1971 Load: 32.4 t ADT: 7,300
STATE ROUTE 255
FairOver: MARINA ROAD
01-HUM-255-0.66-EUR, Humboldt, CA
Built 1979 Load: 32.4 t ADT: 7,300
U.S. HIGHWAY 101
FairOver: NEWTON B DRURY SCENIC PK
01-HUM-101-R126.10, Humboldt, CA
Built 1990 Load: 32.4 t ADT: 3,100
U.S. HIGHWAY 101
FairOver: BOYES CREEK
01-HUM-101-R128.97, Humboldt, CA
Built 1989 Load: 32.4 t ADT: 3,100
STATE ROUTE 96
FairOver: HILLSIDE
01-HUM-096-8.31, Humboldt, CA
Built 1985 Load: 32.4 t ADT: 2,900
STATE ROUTE 169
FairOver: MINERS CREEK
01-HUM-169-26.97, Humboldt, CA
Built 1995 Load: 32.4 t ADT: 320
STATE ROUTE 169
FairOver: CAPPELL CREEK
01-HUM-169-22.37, Humboldt, CA
Built 2012 Load: 32.4 t ADT: 2,000
US HIGHWAY 101 NB
FairOver: MAD RIVER
01-HUM-101-89.63, Humboldt, CA
Built 2012 Load: 32.4 t ADT: 16,500
DILLON ROAD
FairOver: SALT RIVER
N OF PORT KENYON RD, Humboldt, CA
Built 1994 Load: 32.4 t ADT: 371
HATCHERY ROAD
FairOver: MAD RIVER
JUST S/O BLUE LAKE, Humboldt, CA
Built 1983 Load: 32.4 t ADT: 1,016
WILDER RIDGE RD
FairOver: HONEYDEW CREEK
2 MI S MATTOLE RD, Humboldt, CA
Built 1990 Load: 32.4 t ADT: 189
BRIDGE ST
FairOver: SCOTIA MILL POND
NEAR JCT MAIN ST SCOTIA, Humboldt, CA
Built 1974 Load: 32.4 t ADT: 1,055
FORTUNA BOULEVARD
FairOver: STRONGS CREEK
0.2 MI N/O KENMAR RD, Humboldt, CA
Built 1949 Load: 32.4 t ADT: 11,988
BEAR CANYON ROAD
FairOver: SOUTH FORK EEL RIVER
0.3 MI SW/O REDWOOD DR, Humboldt, CA
Built 2000 Load: 32.4 t ADT: 158
PRICE CREEK ROAD
FairOver: PRICE CREEK
1.5 MI W/O BLUE SLIDE RD, Humboldt, CA
Built 1981 Load: 32.4 t ADT: 82
ALDERPOINT RD
FairOver: SOUTH DOBBYN CREEK
2.1 MI N ALDERPOINT, Humboldt, CA
Built 1937 Load: 32.4 t ADT: 281
DAVISON RD
FairOver: PRAIRIE CREEK
0.2 MI W JCT WITH SR 101, Humboldt, CA
Built 1988 Load: 32.4 t ADT: 875
KING SALMON DR
FairOver: KING SALMON SLOUGH
1/4 MI NW OF SR 101, Humboldt, CA
Built 1988 Load: 32.4 t ADT: 1,782
MATTOLE ROAD
FairOver: MCNUTT CREEK
3.6 MI NW OF PETROLIA, Humboldt, CA
Built 1996 Load: 32.4 t ADT: 180
NORTH FORK ROAD
FairOver: MATTOLE CREEK
1.5 MI N/O MATTOLE RD, Humboldt, CA
Built 1996 Load: 32.4 t ADT: 30
CONKLIN CREEK ROAD
FairOver: EAST MILL CREEK
0.2 MI E/O MATTOLE RD, Humboldt, CA
Built 2003 Load: 32.4 t ADT: 20
WILLIAMS CREEK RD
FairOver: WILLIAMS CREEK
0.1 MI S OF GRIZZLY BLUFF, Humboldt, CA
Built 2016 Load: 32.4 t ADT: 130
WADDINGTON RD
FairOver: SALT RIVER
1.1 MI N/O GRIZZLY BLUFF, Humboldt, CA
Built 2016 Load: 32.4 t ADT: 890
MATTOLE RD
FairOver: BULL CREEK
5.3 MI W/O HWY 101, Humboldt, CA
Built 1956 Load: 32.4 t ADT: 310
MATTOLE RD
FairOver: HARPER CREEK
4.3 MI W/O HWY 101, Humboldt, CA
Built 1977 Load: 32.4 t ADT: 600
REDWOOD HWY
FairOver: MAY CREEK
PRAIRIE CR REDWOOD ST PK, Humboldt, CA
Built 1989 Load: 32.4 t ADT: 5,450
IRR BIA RTE 541A
FairOver: SUPPLY CREEK
N SIDE OF HOOPA LOOP ROAD, Humboldt, CA
Built 1966 Load: 32.4 t ADT: 1,500
STATE ROUTE 86 SB
FairOver: ARROYO SALADA DITCH
11-IMP-086-54.70, Imperial, CA
Built 1989 Load: 32.4 t ADT: 7,550
STATE ROUTE 86 SB
FairOver: TULE WASH
11-IMP-086-53.07, Imperial, CA
Built 1989 Load: 32.4 t ADT: 5,600
Showing 12,551-12,600 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.