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
STATE ROUTE 70
FairOver: GOLD RUN CREEK
03-BUT-070-R21.70, Butte, CA
Built 2008 Load: 32.4 t ADT: 12,500
STATE ROUTE 32
FairOver: PINE CREEK OVERFLOW
03-BUT-032-1.63, Butte, CA
Built 2006 Load: 32.4 t ADT: 11,700
STATE ROUTE 70
FairOver: FLAG CANYON CRK
03-BUT-070-24.26, Butte, CA
Built 2015 Load: 32.4 t ADT: 2,400
STATE ROUTE 70
FairOver: MILL CREEK
03-BUT-070-42.06, Butte, CA
Built 2021 Load: 32.4 t ADT: 1,700
OROVILLE CHICO HWY
FairOver: BUTTE CREEK
1.1 MI E MIDWAY RD, Butte, CA
Built 1986 Load: 32.4 t ADT: 332
MIDWAY RD
FairOver: ASH CREEK
1.7 MI N OF NELSON RD, Butte, CA
Built 1985 Load: 32.4 t ADT: 1,254
MIDWAY ROAD
FairOver: NORTH FORK HAMLIN SLOUGH
3.2 MI N OF NELSON RD, Butte, CA
Built 1992 Load: 32.4 t ADT: 1,254
MIDWAY ROAD
FairOver: COMANCHE CREEK
0.1 MI S PARK AVE, Butte, CA
Built 1952 Load: 32.4 t ADT: 16,900
LONE TREE ROAD
FairOver: WYMAN RAVINE
1.8 MI S PALERMO RD, Butte, CA
Built 1992 Load: 32.4 t ADT: 871
LARKIN RD
FairOver: SUTTER-BUTTE CANAL
1.5 MI N ORVLE-GRIDLY RD, Butte, CA
Built 1970 Load: 32.4 t ADT: 1,200
BIGGS AVE
FairOver: RUDY CREEK
0.2 MI E OF 18TH ST, Butte, CA
Built 1966 Load: 32.4 t ADT: 550
AGUAS FRIAS ROAD
FairOver: RICHVALE WEST DRAIN
0.1 KM N OF RICHVALE HWY, Butte, CA
Built 1996 Load: 32.4 t ADT: 356
ORD FERRY ROAD
FairOver: ANGEL SLOUGH
0.1 MI E OF RIVER RD, Butte, CA
Built 1985 Load: 32.4 t ADT: 1,364
BRUCE ROAD
FairOver: S FORK DEAD HORSE SLOUGH
N/O 6TH ST, Butte, CA
Built 1981 Load: 32.4 t ADT: 14,500
COX LANE
FairOver: WYMAN RAVINE
0.4 MI E OF SH 70, Butte, CA
Built 1989 Load: 32.4 t ADT: 300
NELSON RD
FairOver: WESTERN CANAL
1.6 MI W MIDWAY RD, Butte, CA
Built 1958 Load: 32.4 t ADT: 220
OPHIR RD EXT
FairOver: KUSEL SLOUGH
AT LINCOLN BLVD, Butte, CA
Built 1988 Load: 32.4 t ADT: 1,743
BOOK FARM ROAD
FairOver: LITTLE DRY CREEK
W OF SR 99, N OF SR 149, Butte, CA
Built 2008 Load: 32.4 t ADT: 100
COHASSET RD
FairOver: SYCAMORE CREEK TRIBUTARY
0.7 MI N/O EATON RD, Butte, CA
Built 2008 Load: 32.4 t ADT: 10,300
DAYTON -DURHAM HWY
FairOver: HAMLIN SLOUGH
EAST OF HAMLIN ROAD, Butte, CA
Built 2008 Load: 32.4 t ADT: 2,470
AGUAS FRIAS ROAD
FairOver: BUTTE CREEK
2.8 MI N RICHVALE RD, Butte, CA
Built 2009 Load: 32.4 t ADT: 1,000
EAST 20TH STREET
FairOver: LTL CHC-BUT CR DIV CHAN
0.35 MI E OF BRUCE ROAD, Butte, CA
Built 2009 Load: 32.4 t ADT: 2,200
STATE ROUTE 12
FairOver: HAUPT CREEK
10-CAL-012-13.93, Calaveras, CA
Built 1993 Load: 32.4 t ADT: 7,500
STATE ROUTE 4
FairOver: MCCARTY CREEK
10-CAL-004-R4.85, Calaveras, CA
Built 1972 Load: 32.4 t ADT: 5,050
STATE ROUTE 4
FairOver: GARDNER LANE
10-CAL-004-R21.42, Calaveras, CA
Built 2009 Load: 32.4 t ADT: 7,900
SCHADD ROAD
FairOver: MIDDLE FORK MOKELUMNE RI
4 MI E OF WILSEYVILLE, Calaveras, CA
Built 1968 Load: 32.4 t ADT: 35
RAILROAD FLAT RD
FairOver: JESUS MARIA CREEK
1.8 MI. S. JESUS MARIA RD, Calaveras, CA
Built 1978 Load: 32.4 t ADT: 571
SILVER RAPIDS RD
FairOver: KATHY CREEK
1 MI E JCT WITH SR 26, Calaveras, CA
Built 1975 Load: 32.4 t ADT: 1,014
CAMANCHE PARKWAY
FairOver: MOKELUMNE RIVER
2.6 MI NE OF BURSON RD, Calaveras, CA
Built 1964 Load: 32.4 t ADT: 874
RAILROAD FLAT RD
FairOver: LICKING FK MOKELUMNE RIV
3.1 MI SE SR 26, Calaveras, CA
Built 1993 Load: 32.4 t ADT: 369
POOL STATION ROAD
FairOver: SAN DOMINGO CREEK
7.6 MI NORTH OF SR4, Calaveras, CA
Built 2005 Load: 32.4 t ADT: 459
POOL STATION RD
FairOver: SAN ANTONIO CREEK
7.8 MI NORTH OF SR 4, Calaveras, CA
Built 2006 Load: 32.4 t ADT: 459
TREAT AVENUE
FairOver: SAN ANDREAS CREEK
0.15 MI NE OF SR 49, Calaveras, CA
Built 1978 Load: 32.4 t ADT: 2,358
STATE ROUTE 45
FairOver: WILKINS SLOUGH
03-COL-045-6.85, Colusa, CA
Built 1992 Load: 32.4 t ADT: 1,000
INTERSTATE 5
FairOver: FARM LAND DRAIN
03-COL-005-R1.14, Colusa, CA
Built 1968 Load: 32.4 t ADT: 30,000
STATE ROUTE 20
FairOver: BEAR CREEK
03-COL-020-3.28, Colusa, CA
Built 2009 Load: 32.4 t ADT: 5,400
FRESHWATER ROAD
FairOver: FRESHWATER CREEK
AT SCHAAD RD, Colusa, CA
Built 1968 Load: 32.4 t ADT: 252
GRIDLEY ROAD
FairOver: ANGEL SLOUGH
1.7 MI E BUTLER RD, Colusa, CA
Built 1973 Load: 32.4 t ADT: 541
LODOGA-SITES RD
FairOver: STONE CORRAL CREEK
9.6 MI WEST OF I-5, Colusa, CA
Built 1991 Load: 32.4 t ADT: 342
SITES-LODOGA ROAD
FairOver: HOWARD CREEK
15 MI WEST OF I-5, Colusa, CA
Built 1995 Load: 32.4 t ADT: 303
SAN JOSE ROAD
FairOver: LURLINE CREEK
0.5 MI N LURLINE RD, Colusa, CA
Built 1972 Load: 32.4 t ADT: 46
FOUR MILE ROAD
FairOver: STONE CORRAL CREEK
1.2 MI N MAXWELL RD, Colusa, CA
Built 1988 Load: 32.4 t ADT: 32
SAN JOSE ROAD
FairOver: FRESHWATER CREEK
0.6 MI NORTH OF SR 20, Colusa, CA
Built 1960 Load: 32.4 t ADT: 71
WILBUR SPRINGS RD
FairOver: SULPHUR CREEK
1 MI W/O BEAR VALLEY ROAD, Colusa, CA
Built 2001 Load: 32.4 t ADT: 20
GIBSON ROAD
FairOver: LURLINE CREEK
0.3 MI S/O LURLINE ROAD, Colusa, CA
Built 2001 Load: 32.4 t ADT: 33
FAIRVIEW ROAD
FairOver: GLENN-COLUSA CANAL
AT DANLEY ROAD, Colusa, CA
Built 2004 Load: 32.4 t ADT: 324
MCDERMOTT ROAD
FairOver: FUNKS CREEK
0.4 MI S LENAHAN RD, Colusa, CA
Built 2006 Load: 32.4 t ADT: 271
OHM RD
FairOver: SALT CREEK
0.5 MI SOUTH OF HAHN RD., Colusa, CA
Built 2006 Load: 32.4 t ADT: 105
STATE ROUTE 4
FairOver: KENDALL CREEK OVERFLOW
04-CC-004-45.84, Contra Costa, CA
Built 1990 Load: 32.4 t ADT: 18,900
STATE ROUTE 4 WB
FairOver: RODEO CREEK
04-CC-004-R1.90L, Contra Costa, CA
Built 2001 Load: 32.4 t ADT: 20,250
Showing 12,301-12,350 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.