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
US HWY 101 ON-RAMP
GoodOver: WASHINGTON CREEK
04-SON-101-4.78-PET, Sonoma, CA
Built 2013 Load: 32.4 t ADT: 20,000
US HIGHWAY 101
GoodOver: CORONA DITCH
04-SON-101-6.85-PET, Sonoma, CA
Built 1954 Load: 32.4 t ADT: 94,000
STATE ROUTE 1
GoodOver: POCOLIMI CREEK
04-SON-001-0.33, Sonoma, CA
Built 1960 Load: 32.4 t ADT: 4,200
STATE ROUTE 116
GoodOver: RUSSIAN RIVER
04-SON-116-R12.19, Sonoma, CA
Built 1998 Load: 32.4 t ADT: 8,450
SR 12
GoodOver: PURPLE DRAW
04-SON-012-9.84, Sonoma, CA
Built 1995 Load: 32.4 t ADT: 23,050
STATE ROUTE 12
GoodOver: TYLER'S DRAINAGE
04-SON-012-23.00, Sonoma, CA
Built 1950 Load: 32.4 t ADT: 21,000
STATE ROUTE 128
GoodOver: REDWOOD CREEK
04-SON-128-21.78, Sonoma, CA
Built 2011 Load: 32.4 t ADT: 2,900
OFFRAMP NB RTE 101
GoodOver: MARK WEST CREEK
04-SON-101-26.12, Sonoma, CA
Built 2014 Load: 32.4 t ADT: 10,000
U.S. ROUTE 101 NB
GoodOver: SMART RAILROAD TRACKS
04-SON-101-5.74-PET, Sonoma, CA
Built 2022 Load: 32.4 t ADT: 51,500
STATE ROUTE 116
GoodOver: LAGUNA DE SANTA ROSA TRB
04-SON-116-31.15, Sonoma, CA
Built 2020 Load: 32.4 t ADT: 18,000
STATE ROUTE 1
GoodOver: SCOTTY CREEK
04-SON-001-15.21, Sonoma, CA
Built 2023 Load: 32.4 t ADT: 5,200
STATE ROUTE 12
GoodOver: SONOMA CREEK
04-SON-012-25.82, Sonoma, CA
Built 2023 Load: 32.4 t ADT: 26,400
STATE ROUTE 12
GoodOver: HOOKER CREEK
04-SON-012-33.31, Sonoma, CA
Built 2023 Load: 32.4 t ADT: 13,900
HAHMAN DR
GoodOver: SPRING CREEK
0.1 M SOUTH SPRING CREEK, Sonoma, CA
Built 1960 Load: 32.4 t ADT: 6,000
STWRT PT-SKGG SPRG
GoodOver: SOUTH FORK GUALALA RIVER
2.5 MI E OF SH 1, Sonoma, CA
Built 1984 Load: 32.4 t ADT: 300
KING RIDGE RD
GoodOver: AUSTIN CREEK
0.5 MI N FORT ROSS RD, Sonoma, CA
Built 1958 Load: 32.4 t ADT: 200
OAKMONT DRIVE
GoodOver: GOLF CREEK
OAKMONT AREA OF SANTA RSA, Sonoma, CA
Built 1981 Load: 32.4 t ADT: 500
OLD REDWOOD HWY
GoodOver: EAST WINDSOR CREEK
0.1 MI S.E. OF SH101, Sonoma, CA
Built 1991 Load: 32.4 t ADT: 20,000
YULUPA AVENUE
GoodOver: SANTA ROSA CREEK
0.1 MI N MONTGOMERY DR., Sonoma, CA
Built 1996 Load: 32.4 t ADT: 1,200
MOUNTAIN HAWK WAY
GoodOver: SKY HAWK CREEK
0.2 MI N/O SR 12, Sonoma, CA
Built 1995 Load: 32.4 t ADT: 3,320
WILD LILAC LANE
GoodOver: RINCON CREEK
NEAR BRUSH CREEK ROAD, Sonoma, CA
Built 2000 Load: 32.4 t ADT: 2,800
GRANGE ROAD
GoodOver: MATANZAS CREEK
.1MI S BENNETT VALLEY RD, Sonoma, CA
Built 2005 Load: 32.4 t ADT: 3,250
WINDSOR ROAD
GoodOver: WINDSOR CREEK
AT VINTAGE GREENS ROAD, Sonoma, CA
Built 2005 Load: 32.4 t ADT: 5,000
CONDE LANE
GoodOver: PRUITT CREEK
0.1 MI N OF SHILOH ROAD, Sonoma, CA
Built 2008 Load: 32.4 t ADT: 3,000
CROSS CREEK ROAD
GoodOver: MARK WEST CREEK,S BRANCH
BY RIEBLI ROAD, Sonoma, CA
Built 1991 Load: 32.4 t ADT: 2,000
MOUNTAIN HAWK WAY
GoodOver: SKY HAWK CREEK
E OF SAN RAMON WAY, Sonoma, CA
Built 1995 Load: 32.4 t ADT: 3,320
STONE BRIDGE ROAD
GoodOver: MEADOW CREEK
0.6 MI W OF OAKMONT DR, Sonoma, CA
Built 1978 Load: 32.4 t ADT: 2,000
WILD OAK DRIVE
GoodOver: OAKMONT CREEK
SW OF OAKMONT DRIVE, Sonoma, CA
Built 1963 Load: 32.4 t ADT: 2,000
BURGESS DRIVE
GoodOver: COLGAN CREEK FLOOD C CHN
NORTH OF BELLEVUE AVENUE, Sonoma, CA
Built 1994 Load: 32.4 t ADT: 500
VALDES COURT
GoodOver: PINER CREEK
NW OF VALDES DRIVE, Sonoma, CA
Built 1976 Load: 32.4 t ADT: 200
MONTECITO BLVD
GoodOver: DUCKER CREEK
S OF BAIRD BLVD, Sonoma, CA
Built 1983 Load: 32.4 t ADT: 1,000
WILLOW CREEK ROAD
GoodOver: WILLOW CREEK
1.45 MI E/O SR 1, Sonoma, CA
Built 2011 Load: 32.4 t ADT: 170
HAUSER BR RD
GoodOver: SOUTH FORK GUALALA RIVER
5 MI. EAST OF SEAVIEW RD., Sonoma, CA
Built 2017 Load: 32.4 t ADT: 100
BOYES BLVD
GoodOver: SONOMA CREEK
JUST EAST OF RIVERSIDE DR, Sonoma, CA
Built 2022 Load: 32.4 t ADT: 4,600
STATE ROUTE 120
GoodOver: WILDCAT CREEK
10-STA-120-R15.04, Stanislaus, CA
Built 1948 Load: 32.4 t ADT: 12,000
STATE ROUTE 33
GoodOver: INGRAM CREEK
10-STA-033-23.43, Stanislaus, CA
Built 2012 Load: 32.4 t ADT: 2,275
COOPERSTOWN ROAD
GoodOver: NORTH FORK DRY CREEK
1.2 MI E OF WILMS RD, Stanislaus, CA
Built 1989 Load: 32.4 t ADT: 35
ORESTIMBA ROAD
GoodOver: ORESTIMBA CREEK
1.0 MI W OF BELL RD, Stanislaus, CA
Built 1988 Load: 32.4 t ADT: 120
ANDERSON ROAD
GoodOver: ORESTIMBA CREEK
0.4 MI E/O EASTING ROAD, Stanislaus, CA
Built 2001 Load: 32.4 t ADT: 353
SONORA ROAD
GoodOver: LITTLE JOHN CREEK
2.7 MI SE OF 28 MI RD, Stanislaus, CA
Built 1992 Load: 32.4 t ADT: 230
CLARIBELL ROAD
GoodOver: BRANCH DRY CREEK NO 2
3.0 MI E ELLENWOOD RD, Stanislaus, CA
Built 1987 Load: 32.4 t ADT: 351
26 MILE ROAD
GoodOver: LITTLE JOHN CREEK
7.5 MI N OF SR 120, Stanislaus, CA
Built 1986 Load: 32.4 t ADT: 1,794
28 MILE ROAD
GoodOver: WOODWARD RESERVOIR
1.4 MI N DORSEY RD, Stanislaus, CA
Built 1989 Load: 32.4 t ADT: 76
SONORA ROAD
GoodOver: LITTLE JOHN CREEK
3.7 MI E FRANKENHEIMER RD, Stanislaus, CA
Built 1991 Load: 32.4 t ADT: 182
SONORA ROAD
GoodOver: LITTLE JOHN CREEK
SOUTH JCT WITH MILTON RD., Stanislaus, CA
Built 1997 Load: 32.4 t ADT: 230
WELLSFORD ROAD
GoodOver: DRY CREEK
1.5 MI N OF SR 132, Stanislaus, CA
Built 1985 Load: 32.4 t ADT: 2,448
FRANKENHEIMBER RD
GoodOver: LITTLE JOHN CREEK
0.8 MI S OF SONORA RD, Stanislaus, CA
Built 1992 Load: 32.4 t ADT: 27
CARPENTER ROAD
GoodOver: TUOLUMNE RIVER
0.1 MI N/O HATCH ROAD, Stanislaus, CA
Built 1960 Load: 32.4 t ADT: 21,848
VIRGINIA AVENUE
GoodOver: M.I.D. LATERAL #4
DIAG @ INTERST OF MORRIS, Stanislaus, CA
Built 1974 Load: 32.4 t ADT: 3,160
BOOTHE ROAD
GoodOver: T.I.D. CERES MAIN CANAL
50' S/O HATCH ROAD, Stanislaus, CA
Built 1989 Load: 32.4 t ADT: 4,800
Showing 23,301-23,350 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |