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
FEATHER AVE
GoodOver: RUDY CREEK
0.3 MI E OF 18TH ST, Butte, CA
Built 1994 Load: 32.4 t ADT: 1,600
LONE PINE AVE
GoodOver: COMANCHE CREEK
N OF EDGAR AVE, Butte, CA
Built 1997 Load: 32.4 t ADT: 513
OPHIR RD EXTENSION
GoodOver: WYMAN RAVINE
0.8 MI E LINCOLN BLVD, Butte, CA
Built 1988 Load: 32.4 t ADT: 4,290
OPHIR RD EXT
GoodOver: BRANCH WYMAN RAVINE
0.2 MI W PALERMO RD, Butte, CA
Built 1988 Load: 32.4 t ADT: 4,290
HOLLY AVE
GoodOver: LINDO CHANNEL
0.5 MI S OF W EAST AVE, Butte, CA
Built 1996 Load: 32.4 t ADT: 4,693
B STREET
GoodOver: HAMILTON SLOUGH
ON B ST, W OF RTE 99, Butte, CA
Built 1996 Load: 32.4 t ADT: 2,264
PACIFIC HEIGHTS RD
GoodOver: DRY CREEK
0.35 MI N GEO PAC WAY, Butte, CA
Built 2010 Load: 32.4 t ADT: 1,188
6TH STREET
GoodOver: HAMILTON SLOUGH
N OF DAKOTA AVE, Butte, CA
Built 2014 Load: 32.4 t ADT: 1,044
FOOTHILL BLVD
GoodOver: WYMAN RAVINE
S OF OROVILLE BANGOR HWY, Butte, CA
Built 2015 Load: 32.4 t ADT: 2,000
MIDWAY ROAD
GoodOver: BUTTE CREEK AND OVERFLOW
SOUTH OF WHITE DRIVE, Butte, CA
Built 2022 Load: 32.4 t ADT: 1,254
OREGON GULCH ROAD
GoodOver: MORRIS RAVINE
E OF CHEROKEE RD, Butte, CA
Built 2017 Load: 32.4 t ADT: 122
DWR ACCESS ROAD
GoodOver: OREGON GULCH
3.2 MI FROM LUMPKIN RD, Butte, CA
Built 2020 Load: 32.4 t ADT: 20
CRAIG ACCESS ROAD
GoodOver: OREGON GULCH
0.6 MI FROM LUMKIN RD, Butte, CA
Built 2020 Load: 32.4 t ADT: 200
STATE ROUTE 26
GoodOver: INDIAN CREEK
10-CAL-026-R4.31, Calaveras, CA
Built 1990 Load: 32.4 t ADT: 2,500
SB STATE ROUTE 26
GoodOver: HILLSIDE
10-CAL-026-29.33, Calaveras, CA
Built 1984 Load: 32.4 t ADT: 1,550
STATE ROUTE 26
GoodOver: M. FORK MOKELUMNE RIVER
10-CAL-026-R33.65, Calaveras, CA
Built 1997 Load: 32.4 t ADT: 1,825
STATE ROUTE 4
GoodOver: MURPHYS GRADE ROAD
10-CAL-004-R21.89, Calaveras, CA
Built 2009 Load: 32.4 t ADT: 9,150
STATE ROUTE 4
GoodOver: CREEK & PENSTOCK PIPE
10-CAL-004-R22.09, Calaveras, CA
Built 2009 Load: 32.4 t ADT: 7,900
STATE ROUTE 4
GoodOver: ANGELS CREEK
10-CAL-004-R22.80, Calaveras, CA
Built 2009 Load: 32.4 t ADT: 9,150
ROCK CREEK RD
GoodOver: ROCK CREEK
1.7 MI S/E MILTON RD, Calaveras, CA
Built 1990 Load: 32.4 t ADT: 37
MAIN STREET
GoodOver: COYOTE CREEK
0.7 MILES SOUTH OF RTE 4., Calaveras, CA
Built 2003 Load: 32.4 t ADT: 417
JESUS MARIA ROAD
GoodOver: NORTH FORK CALAVERAS RIV
2.4 MI S/E OF SR 26, Calaveras, CA
Built 1989 Load: 32.4 t ADT: 479
SHEEP RANCH RD
GoodOver: INDIAN CREEK
6 MI N OF MURPHYS, Calaveras, CA
Built 1989 Load: 32.4 t ADT: 161
POOLE STATION ROAD
GoodOver: CALAVERITAS CREEK
9.6 MI NORTH OF SR 4, Calaveras, CA
Built 2001 Load: 32.4 t ADT: 462
RAILROAD FLAT ROAD
GoodOver: MOKELUMNE RIVER
3.7 MILES SE OF SR 26, Calaveras, CA
Built 1999 Load: 32.4 t ADT: 700
DOGTOWN ROAD
GoodOver: SAN ANTONIO CREEK
9.2 ILES N/O SR 49, Calaveras, CA
Built 2001 Load: 32.4 t ADT: 100
BOOSTER WAY
GoodOver: ANGELS CREEK
0.1 MI W OF SR 4, Calaveras, CA
Built 1990 Load: 32.4 t ADT: 400
CREEKVIEW DRIVE
GoodOver: ANGELS CREEK
150FT N SR4 & BIG TREE DR, Calaveras, CA
Built 2009 Load: 32.4 t ADT: 400
RAILROAD FLAT ROAD
GoodOver: ESPERANZA CREEK
BETWN RDGE RD & JES MA RD, Calaveras, CA
Built 2018 Load: 32.4 t ADT: 800
SOUTHWORTH ROAD
GoodOver: BEAR CREEK
0.4 MI S OF ROUTE 12, Calaveras, CA
Built 2001 Load: 32.4 t ADT: 1,000
INTERSTATE 5
GoodOver: SOUTH BRANCH SAND CREEK
03-COL-005-R8.51, Colusa, CA
Built 1967 Load: 32.4 t ADT: 29,500
INTERSTATE 5
GoodOver: CORTINA CREEK OVERFLOW
03-COL-005-R11.83, Colusa, CA
Built 1946 Load: 32.4 t ADT: 33,000
INTERSTATE 5
GoodOver: BRUSH CREEK
03-COL-005-R2.95, Colusa, CA
Built 1967 Load: 32.4 t ADT: 35,000
STATE ROUTE 20
GoodOver: REFUGE DRAIN
03-COL-020-28.81, Colusa, CA
Built 1983 Load: 32.4 t ADT: 7,750
STATE ROUTE 20
GoodOver: BEAR CREEK TRIBUTARY
03-COL-020-3.40, Colusa, CA
Built 2009 Load: 32.4 t ADT: 4,950
NORMAN ROAD
GoodOver: COLUSA DRAIN
0.5 MI E CLARK AVE, Colusa, CA
Built 2009 Load: 32.4 t ADT: 289
OLD 99W
GoodOver: NOBO DRAW
0.5 MI NORTH OF HAHN RD, Colusa, CA
Built 1946 Load: 32.4 t ADT: 5,274
HILLGATE ROAD
GoodOver: ELK CREEK
0.1 MI W OF JENSEN AVE, Colusa, CA
Built 1972 Load: 32.4 t ADT: 739
LURLINE AVE
GoodOver: COLUSA TROUGH
1.5 MI E OF SAN JOSE RD, Colusa, CA
Built 1986 Load: 32.4 t ADT: 126
LEESVILLE ROAD
GoodOver: N BR FRESHWATER CREEK
2 MI NW OLD WILBUR ROAD, Colusa, CA
Built 2010 Load: 32.4 t ADT: 23
BEAR VALLEY ROAD
GoodOver: BEAR CREEK
1.4 MI N/O OLD WILBUR RD, Colusa, CA
Built 1998 Load: 32.4 t ADT: 41
FOUTS SPRINGS ROAD
GoodOver: MILL CREEK
12.5 MI W/O STONYFORD, Colusa, CA
Built 1997 Load: 32.4 t ADT: 190
SITES-LODOGA ROAD
GoodOver: SQUAW CREEK
1.2 MI N OF LODOGA, Colusa, CA
Built 1998 Load: 32.4 t ADT: 283
SITES-LODOGA ROAD
GoodOver: SQUAW CREEK
1.3 MI N OF LODOGA, Colusa, CA
Built 1998 Load: 32.4 t ADT: 283
DANLEY LATERAL RD
GoodOver: GLENN-COLUSA CANAL
0.3 MI WEST OF DANLEY RD, Colusa, CA
Built 2000 Load: 32.4 t ADT: 77
GIBSON ROAD
GoodOver: FRESHWATER CREEK
0.1 MI N/O FRESHWATER RD, Colusa, CA
Built 2001 Load: 32.4 t ADT: 41
WHITE ROAD
GoodOver: COLUSA DRAIN
3.2 MI WEST OF S.R. 45, Colusa, CA
Built 2002 Load: 32.4 t ADT: 56
BAGLEY ROAD
GoodOver: GLENN-COLUSA CANAL
0.3 MI WEST OF DANLEY RD, Colusa, CA
Built 2003 Load: 32.4 t ADT: 55
OHM ROAD
GoodOver: GLENN-COLUSA CANAL
AT WARE ROAD, Colusa, CA
Built 2004 Load: 32.4 t ADT: 18
DANLEY ROAD
GoodOver: GLENN VALLEY SLOUGH
1.8 MI N FRESHWATER RD., Colusa, CA
Built 2007 Load: 32.4 t ADT: 189
Showing 20,051-20,100 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.