Total Bridges
27,040
Public highway bridges in California
State profile · Below median Poor share
California bridge safety
Condition ratings, load ratings, and Poor-condition data for every public highway bridge in California, based on the FHWA National Bridge Inventory.
- 27,040
- Public bridges
- 32.5%
- Good condition
- 4.6%
- Poor condition
Data updated May 2026
Good Condition
32.5%
8,777 bridges rated 7-9
-17.5pp vs 50% benchmark
Poor Condition
4.6%
1,244 bridges whose lowest applicable component is rated 0-4
-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 - Poor-condition share 15.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
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 by Poor-condition share (lower share = better)
States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below California on the same metric.
OH
Ohio
4.54% top marginal rate
NJ
New Jersey
4.59% top marginal rate
CA
California
4.60% top marginal rate
AR
Arkansas
4.71% top marginal rate
WA
Washington
4.81% top marginal rate
Bridges Needing Most Attention in California
Six lowest-condition bridges in California, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.
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
PoorOver: 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 46
GoodOver: WALKER CREEK
0.2 MI WEST OF ROAD 19, Glenn, CA
Built 1989 Load: 32.4 t ADT: 5
ROAD 'D'
GoodOver: N FK LOGAN CREEK OVRFLOW
JUST NORTH OF RD #60, Glenn, CA
Built 1981 Load: 32.4 t ADT: 410
COUNTY ROAD 303
GoodOver: SOUTH FORK WILLOW CREEK
4.5 MI SOUTH OF ROAD 302, Glenn, CA
Built 2003 Load: 32.4 t ADT: 27
ROAD Z
GoodOver: CAMPBELL SLOUGH
1.5 MI N/O SR 162, Glenn, CA
Built 2011 Load: 32.4 t ADT: 586
US HIGHWAY 101 SB
GoodOver: EEL RIVER
01-HUM-101-M53.97-RDEL, Humboldt, CA
Built 1974 Load: 32.4 t ADT: 4,400
US HIGHWAY 101 SB
GoodOver: VAN DUZEN RIVER
01-HUM-101-56.84, Humboldt, CA
Built 2007 Load: 32.4 t ADT: 13,000
US HIGHWAY 101 NB
GoodOver: VAN DUZEN RIVER
01-HUM-101-56.84, Humboldt, CA
Built 1996 Load: 32.4 t ADT: 6,800
U.S. HIGHWAY 101
GoodOver: LITTLE RIVER
01-HUM-101-R97.46, Humboldt, CA
Built 1964 Load: 32.4 t ADT: 10,500
U.S. HIGHWAY 101
GoodOver: REDWOOD CREEK
01-HUM-101-121.09, Humboldt, CA
Built 1988 Load: 32.4 t ADT: 3,750
U.S. HIGHWAY 101
GoodOver: LOST MAN CREEK
01-HUM-101-124.71, Humboldt, CA
Built 1986 Load: 32.4 t ADT: 3,700
STATE ROUTE 299
GoodOver: SOUTH FORK TRINITY RIVER
01-HUM-299-42.95, Humboldt, CA
Built 1988 Load: 32.4 t ADT: 4,400
STATE ROUTE 36
GoodOver: GRIZZLY CREEK
01-HUM-036-16.94, Humboldt, CA
Built 1996 Load: 32.4 t ADT: 1,650
U.S. HIGHWAY 101
GoodOver: NEWTON ROAD
01-HUM-101-33.22, Humboldt, CA
Built 1961 Load: 32.4 t ADT: 6,190
STATE ROUTE 36
GoodOver: VAN DUZEN RIVER
01-HUM-036-40.45, Humboldt, CA
Built 1981 Load: 32.4 t ADT: 1,000
STATE ROUTE 96
GoodOver: SUPPLY CREEK
01-HUM-096-11.62, Humboldt, CA
Built 1991 Load: 32.4 t ADT: 2,850
STATE ROUTE 96
GoodOver: MILL CREEK
01-HUM-096-R14.55, Humboldt, CA
Built 1993 Load: 32.4 t ADT: 1,505
U.S. HIGHWAY 101
GoodOver: SOUTH FORK EEL RIVER
01-HUM-101-R7.87, Humboldt, CA
Built 1969 Load: 32.4 t ADT: 5,700
STATE ROUTE 299
GoodOver: WILLOW CREEK
01-HUM-299-35.55, Humboldt, CA
Built 1956 Load: 32.4 t ADT: 3,200
U.S. HIGHWAY 101
GoodOver: HOOKER CREEK ROAD
01-HUM-101-R16.51, Humboldt, CA
Built 1965 Load: 32.4 t ADT: 6,700
STATE ROUTE 299
GoodOver: HILLSIDE
01-HUM-299-R42.30, Humboldt, CA
Built 1966 Load: 32.4 t ADT: 4,400
STATE ROUTE 169
GoodOver: ROCK CHUTE CREEK
01-HUM-169-29.83, Humboldt, CA
Built 1991 Load: 32.4 t ADT: 320
US HIGHWAY 101 NB
GoodOver: EEL RIV,EDWARDS DR,NCRRA
01-HUM-101-R51.99, Humboldt, CA
Built 1976 Load: 32.4 t ADT: 5,500
STATE ROUTE 255
GoodOver: MAD RIVER SLOUGH
01-HUM-255-R5.13, Humboldt, CA
Built 1981 Load: 32.4 t ADT: 4,300
STATE ROUTE 36
GoodOver: VAN DUZEN RIVER
01-HUM-036-17.94, Humboldt, CA
Built 1985 Load: 32.4 t ADT: 1,650
SANDY PRAIRIE ROAD
GoodOver: VAN DUZEN RIVER OVERFLOW
01-HUM-000-0.00, Humboldt, CA
Built 2009 Load: 32.4 t ADT: 30
STATE ROUTE 254
GoodOver: HILLSIDE
01-HUM-254-11.83, Humboldt, CA
Built 1989 Load: 32.4 t ADT: 565
STATE ROUTE 36
GoodOver: VAN DUZEN RIVER
01-HUM-036-R23.91, Humboldt, CA
Built 1997 Load: 32.4 t ADT: 1,200
STATE ROUTE 96
GoodOver: HOSTLER CREEK
01-HUM-096-R13.26, Humboldt, CA
Built 1992 Load: 32.4 t ADT: 1,505
STATE ROUTE 254
GoodOver: HILLSIDE
01-HUM-254-17.80-STPK, Humboldt, CA
Built 1995 Load: 32.4 t ADT: 565
STATE ROUTE 169
GoodOver: MAWAH CREEK
01-HUM-169-24.98, Humboldt, CA
Built 2012 Load: 32.4 t ADT: 2,000
STATE ROUTE 169
GoodOver: RUBE RANCH CREEK
01-HUM-169-28.49, Humboldt, CA
Built 2012 Load: 32.4 t ADT: 2,000
STATE ROUTE 169
GoodOver: MARTINS FERRY SCHOOL CRK
01-HUM-169-29.95, Humboldt, CA
Built 2012 Load: 32.4 t ADT: 345
US HIGHWAY 101 SB
GoodOver: MAD RIVER
01-HUM-101-89.63, Humboldt, CA
Built 2011 Load: 32.4 t ADT: 18,500
U.S. HIGHWAY 101
GoodOver: LITTLE LOST MAN CREEK
01-HUM-101-124.48, Humboldt, CA
Built 2020 Load: 32.4 t ADT: 4,200
US HIGHWAY 101 SB
GoodOver: JACOBY CREEK
01-HUM-101-84.50-ARC, Humboldt, CA
Built 2022 Load: 32.4 t ADT: 18,125
LANPHERE ROAD
GoodOver: MAD RIVER SLOUGH
2.5 MI WEST OF SR 101, Humboldt, CA
Built 1988 Load: 32.4 t ADT: 45
ELK RIVER ROAD
GoodOver: MARTIN SLOUGH
0.2 MI SE OF SR 101, Humboldt, CA
Built 1992 Load: 32.4 t ADT: 4,801
GLENDALE DR
GoodOver: LINDSAY CREEK
JUST NW OF FIELDBROOK RD, Humboldt, CA
Built 1995 Load: 32.4 t ADT: 1,520
GOLDEN GATE DR
GoodOver: VAN DUZEN RIVER
0.5 MI S OF SR 36, Humboldt, CA
Built 1985 Load: 32.4 t ADT: 58
WHITLOW RD
GoodOver: SONOMA CREEK
1 MI N OF SEQUOIA RD, Humboldt, CA
Built 1986 Load: 32.4 t ADT: 53
KINGS PEAK ROAD
GoodOver: NORTH FORK BEAR CREEK
2 MI S/O WILDER RIDGE RD, Humboldt, CA
Built 1993 Load: 32.4 t ADT: 75
BEAR RIVER ROAD
GoodOver: BONANZA GULCH
8.5 MI S OF MATTOLE RD, Humboldt, CA
Built 1986 Load: 32.4 t ADT: 15
MATTOLE ROAD
GoodOver: DAVIS CREEK
7.2 MI NW OF PETROLIA, Humboldt, CA
Built 1998 Load: 32.4 t ADT: 700
OLD ARCATA RD
GoodOver: JACOBY CREEK
1/4 MI N BAYSIDE CUTOFF, Humboldt, CA
Built 1988 Load: 32.4 t ADT: 3,030
MAPLE HILLS ROAD
GoodOver: SALMON CREEK
JUST S/O SALMON CREEK RD, Humboldt, CA
Built 1982 Load: 32.4 t ADT: 349
DEVOY RD
GoodOver: FRESHWATER SLOUGH
AT MYRTLE AVE, Humboldt, CA
Built 1986 Load: 32.4 t ADT: 24
MYRTLE AVE
GoodOver: FRESHWATER CR OVERFLOW
0.4 MI W OF KNEELAND RD, Humboldt, CA
Built 1984 Load: 32.4 t ADT: 6,908
RED CAP ROAD
GoodOver: BOISE CREEK
3.7 MILE S. OF SR 96, Humboldt, CA
Built 1995 Load: 32.4 t ADT: 91
PRICE CREEK ROAD
GoodOver: PRICE CREEK
0.9 MI W BLUE SLIDE ROAD, Humboldt, CA
Built 1996 Load: 32.4 t ADT: 67
LIGHTHOUSE ROAD
GoodOver: MILL CREEK
1.5 MI SW OF MATTOLE RD, Humboldt, CA
Built 2003 Load: 32.4 t ADT: 3
Showing 20,401-20,450 of 27,040 bridges
Related
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.
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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.
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.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.