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
U.S. HIGHWAY 101
FairOver: RUSSIAN,NCRA/NWP,GEYSERS
01-MEN-101-R0.48, Mendocino, CA
Built 1989 Load: 32.4 t ADT: 13,300
STATE ROUTE 162
FairOver: LONG VALLEY CREEK
01-MEN-162-R0.03, Mendocino, CA
Built 1995 Load: 32.4 t ADT: 860
STATE ROUTE 1
FairOver: DUNN CREEK
01-MEN-001-92.83, Mendocino, CA
Built 2014 Load: 32.4 t ADT: 810
MOUNTAIN HOUSE RD
FairOver: FELIZ CREEK
0.1 MI SW SR101 HOPLAND, Mendocino, CA
Built 1991 Load: 32.4 t ADT: 1,272
EEL RIVER RD
FairOver: EEL RIVER
5 MI N MAIN IN POTTR VLY, Mendocino, CA
Built 1989 Load: 32.4 t ADT: 279
N STATE ST
FairOver: HENSLEY CREEK
0.2 MI S LAKE MNDOCINO DR, Mendocino, CA
Built 1973 Load: 32.4 t ADT: 15,190
EAST RD
FairOver: WEST BRANCH RUSSIAN RIV
E OF JCT W RD & TOMKI RD, Mendocino, CA
Built 1990 Load: 32.4 t ADT: 846
MENDOCINO PASS RD
FairOver: WILLIAMS CREEK
8.0 MI E/O COVELO, Mendocino, CA
Built 1983 Load: 32.4 t ADT: 226
BRANSCOMB RD
FairOver: CAHTO CREEK
22.32 MI E FROM SH 1, Mendocino, CA
Built 1991 Load: 32.4 t ADT: 478
E SIDE POTTER VLY
FairOver: EAST FORK RUSSIAN RIVER
0.3 MI N RTE 20, Mendocino, CA
Built 1999 Load: 32.4 t ADT: 3,699
VICHY SPRINGS RD
FairOver: RUSSIAN RIVER
0.8 MI E/O RTE 101, Mendocino, CA
Built 1986 Load: 32.4 t ADT: 5,718
WILDERNESS LDGE RD
FairOver: SOUTH FORK EEL RIVER
1.8 MI N BRANSCOMB RD, Mendocino, CA
Built 1992 Load: 32.4 t ADT: 114
IRR EAST LANE
FairOver: MILL CREEK
1.0 MI E OF SR 162, Mendocino, CA
Built 1989 Load: 32.4 t ADT: 889
HIBBARD ROAD
FairOver: RANCHERIA CREEK
ADJACENT TO SR 128, Mendocino, CA
Built 1987 Load: 32.4 t ADT: 126
TOMKI RD
FairOver: TOMKI CREEK
0.2 MI N JCT CR 308, Mendocino, CA
Built 1988 Load: 32.4 t ADT: 130
HEARST-WILLITS RD
FairOver: STRING CREEK
4.3 MI NW REYNOLDS HWY, Mendocino, CA
Built 1956 Load: 32.4 t ADT: 208
ROBINSON CREEK RD
FairOver: ROBINSON CREEK
3.00 MI N SH 253, Mendocino, CA
Built 1956 Load: 32.4 t ADT: 168
ROBINSON CREEK RD
FairOver: ROBINSON CREEK
3.15 MI N SH 253, Mendocino, CA
Built 1975 Load: 32.4 t ADT: 168
ORR SPRINGS RD
FairOver: SOUTH FORK BIG RIVER
13.4 MI W US 101, Mendocino, CA
Built 1973 Load: 32.4 t ADT: 134
DOBIE RD
FairOver: TURNER CREEK
0.10 MI S CR 327-A, Mendocino, CA
Built 1979 Load: 32.4 t ADT: 210
AIRPORT RD
FairOver: TOWN CREEK
0.3 MI S HOWARD ST, Mendocino, CA
Built 1994 Load: 32.4 t ADT: 142
POPPY DR
FairOver: WILLITS CREEK
1.4 MI N PRIMROSE DR, Mendocino, CA
Built 1977 Load: 32.4 t ADT: 545
MILL CREEK DR
FairOver: MILL CREEK
AT W. COMMERCIAL ST, Mendocino, CA
Built 1980 Load: 32.4 t ADT: 1,000
PINE AVENUE
FairOver: BURRIGHT CREEK
1 MI E E SIDE POTTER VLY, Mendocino, CA
Built 1999 Load: 32.4 t ADT: 165
RAILROAD AVENUE
FairOver: BAECHTEL CREEK
0.1 MI EAST OF RT 101, Mendocino, CA
Built 2011 Load: 32.4 t ADT: 300
ROBINSON CREEK RD
FairOver: ROBINSON CREEK
3.00 MILES WEST OF SR 253, Mendocino, CA
Built 2004 Load: 32.4 t ADT: 40
FOREST ROAD 200
FairOver: WEST CHAMBERLAIN CREEK
1.4 MI N JCT SR 20, Mendocino, CA
Built 1957 Load: 32.4 t ADT: 75
FOREST ROAD 800
FairOver: NORTH FORK BIG RIVER
0.1 MILE SOUTH OF SR 20, Mendocino, CA
Built 1958 Load: 32.4 t ADT: 50
FOREST ROAD 100
FairOver: JAMES CREEK
0.4 MI N JCT SR 20, Mendocino, CA
Built 1980 Load: 32.4 t ADT: 25
FOREST ROAD 360
FairOver: SOUTH FORK NOYO RIVER
AT JCT WITH RD 350, Mendocino, CA
Built 1987 Load: 32.4 t ADT: 50
FOREST ROAD 900
FairOver: JAMES CREEK
S OF SR 20, N OF RD 910, Mendocino, CA
Built 1981 Load: 32.4 t ADT: 25
FOREST ROAD 900
FairOver: NORTH FORK BIG RIVER
0.16 MI S JCT SR 20, Mendocino, CA
Built 1982 Load: 32.4 t ADT: 25
FOREST ROAD 640
FairOver: NORTH FORK CASPAR CREEK
EAST OF JCT RD 600, Mendocino, CA
Built 1994 Load: 32.4 t ADT: 50
Eagle Field Road
FairOver: San Luis Canal
0.25 mi E Pole Line Road, Merced, CA
Built 1968 Load: 32.4 t ADT: 200
STATE ROUTE 99 NB
FairOver: MERCED RIVER
10-MER-099-R30.97, Merced, CA
Built 1999 Load: 32.4 t ADT: 28,000
STATE ROUTE 152 EB
FairOver: FRESNO RIVER
10-MER-152-R37.71, Merced, CA
Built 1939 Load: 32.4 t ADT: 8,425
STATE ROUTE 152 EB
FairOver: SAN JOAQUIN RIVER
10-MER-152-R37.40, Merced, CA
Built 1997 Load: 32.4 t ADT: 8,425
STATE ROUTE 152 WB
FairOver: SANTA RITA CANAL
10-MER-152-R34.50, Merced, CA
Built 1969 Load: 32.4 t ADT: 8,425
STATE ROUTE 59
FairOver: EDENDALE CREEK
10-MER-059-24.09, Merced, CA
Built 1989 Load: 32.4 t ADT: 1,425
STATE ROUTE 59
FairOver: CANAL CREEK
10-MER-059-26.05, Merced, CA
Built 1986 Load: 32.4 t ADT: 1,425
STATE ROUTE 140
FairOver: NORTH BRANCH MUD SLOUGH
10-MER-140-11.32, Merced, CA
Built 1992 Load: 32.4 t ADT: 3,650
STATE ROUTE 140
FairOver: BLACK RASCAL CREEK
10-MER-140-31.60, Merced, CA
Built 1994 Load: 32.4 t ADT: 6,000
STATE ROUTE 152 WB
FairOver: SAN LUIS DAM FOREBAY
10-MER-152-R10.05, Merced, CA
Built 1964 Load: 32.4 t ADT: 14,375
STATE ROUTE 152 EB
FairOver: SAN LUIS DAM FOREBAY
10-MER-152-R10.05, Merced, CA
Built 1964 Load: 32.4 t ADT: 14,375
STATE ROUTE 99 SB
FairOver: EL CAPITAN WAY
10-MER-099-R34.05, Merced, CA
Built 1980 Load: 32.4 t ADT: 37,000
STATE ROUTE 99 NB
FairOver: EL CAPITAN WAY
10-MER-099-R34.05, Merced, CA
Built 1980 Load: 32.4 t ADT: 37,000
STATE ROUTE 152
FairOver: SAN JUAN CANAL
10-MER-152-R32.82, Merced, CA
Built 1969 Load: 32.4 t ADT: 16,850
STATE ROUTE 165
FairOver: SANTA FE CANAL
10-MER-165-12.08, Merced, CA
Built 1958 Load: 32.4 t ADT: 1,800
STATE ROUTE 99 SB
FairOver: COLLIER ROAD
10-MER-099-R31.93, Merced, CA
Built 1997 Load: 32.4 t ADT: 32,000
STATE ROUTE 99 NB
FairOver: COLLIER ROAD
10-MER-099-R31.93, Merced, CA
Built 1997 Load: 32.4 t ADT: 32,000
Showing 12,951-13,000 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.