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
HILL BLVD
FairOver: CHURN CREEK
0.1 MI N LAKE BLVD, Shasta, CA
Built 1940 Load: 16.2 t ADT: 200
FRENCH GULCH ROAD
FairOver: FRENCH GULCH
2.3 MI NW/O TRINITY MT RD, Shasta, CA
Built 1935 Load: 16.2 t ADT: 60
LOWER GAS POINT RD
FairOver: LUCILLE CREEK
1.2 MI N GAS POINT RD, Shasta, CA
Built 1935 Load: 16.2 t ADT: 10
ASH CREEK ROAD
FairOver: ASH CREEK TRIBUTARY
1.8 MI E PARKVILLE RD, Shasta, CA
Built 1945 Load: 16.2 t ADT: 200
ASH CR RD
FairOver: ASH CREEK TRIBUTARY
2.2 MI E PARKVILLE RD, Shasta, CA
Built 1940 Load: 16.2 t ADT: 200
SALMON LAKE ROAD
FairOver: SALMON CREEK
WEST OF GOLD LAKE RD, Sierra, CA
Built 1960 Load: 16.2 t ADT: 125
FAIRLANE RD
FairOver: JUNIPER CREEK
0.3 MI S OF WALTERS LN, Siskiyou, CA
Built 1923 Load: 16.2 t ADT: 171
OLD HIGHWAY 99
FairOver: HAY CREEK
0.1 MI S TRUITMAN LANE, Siskiyou, CA
Built 1923 Load: 16.2 t ADT: 1,005
STATE ROUTE 12
FairOver: WELL CREEK
04-SOL-012-22.91, Solano, CA
Built 1918 Load: 16.2 t ADT: 16,700
STATE ROUTE 84
FairOver: MINER SLOUGH
04-SOL-084-12.09, Solano, CA
Built 1933 Load: 16.2 t ADT: 288
COUNTRY CLUB DR
FairOver: GREEN VALLEY CREEK
0.16 MI W GREEN VALLEY RD, Solano, CA
Built 1936 Load: 16.2 t ADT: 672
WINTERS ROAD
FairOver: MC CUNE CREEK
1.83 MI N ALLENDALE RD, Solano, CA
Built 1911 Load: 16.2 t ADT: 1,521
HAY ROAD
FairOver: OLD ALAMO CREEK
0.6 MI WEST OF HWY 113, Solano, CA
Built 1935 Load: 16.2 t ADT: 543
VALLEY FORD RD
FairOver: STEMPLE CREEK
7.5 MI INTERSECTION SR 1, Sonoma, CA
Built 1915 Load: 16.2 t ADT: 3,100
BODEGA HWY
FairOver: NOLAN CREEK
1.2 MI NE INTX SR 1, Sonoma, CA
Built 1955 Load: 16.2 t ADT: 6,400
DRY CRK CANYON RD
FairOver: LYTTON SPRINGS CREEK
INTERSECTION LYTTON RD, Sonoma, CA
Built 1935 Load: 16.2 t ADT: 2,800
W COLLEGE AVE
FairOver: COLLEGE CREEK
0.05 MI W MARLOW RD, Sonoma, CA
Built 1935 Load: 16.2 t ADT: 26,000
WARM SPRINGS RD
FairOver: YULUPA CREEK
11.15 MI N OF S.H. 116, Sonoma, CA
Built 1930 Load: 16.2 t ADT: 2,700
OAK ST
FairOver: DOWDALL CREEK
0.1 MI W/O RIVERSIDE DR, Sonoma, CA
Built 1940 Load: 16.2 t ADT: 350
O'DONNELL LANE
FairOver: CALABAZAS CREEK
NEAR ARNOLD DRIVE, Sonoma, CA
Built 1900 Load: 16.2 t ADT: 500
FAUGHT ROAD
FairOver: PRUITT CREEK
0.3 MI N OF E SHILOH RD, Sonoma, CA
Built 1935 Load: 16.2 t ADT: 2,900
ARNOLD DR
FairOver: STEWART CREEK
0.4 MI S JCT SR 12, Sonoma, CA
Built 1928 Load: 16.2 t ADT: 3,700
MITCHELL RD-S99 ON
FairOver: CERES MAIN CANAL
10-STA-099-R10.03, Stanislaus, CA
Built 1912 Load: 16.2 t ADT: 7,400
STATE ROUTE 4
FairOver: DUCK CREEK
10-STA-004-0.88, Stanislaus, CA
Built 1920 Load: 16.2 t ADT: 4,900
STATE ROUTE 132
FairOver: WATERFORD CANAL
10-STA-132-25.20, Stanislaus, CA
Built 1916 Load: 16.2 t ADT: 9,100
CROWS LANDING ROAD
FairOver: T.I.D. LOWER LATERAL #4
0.5 MI N/O W. MAIN STREET, Stanislaus, CA
Built 1925 Load: 16.2 t ADT: 5,844
AMERICAN AVENUE
FairOver: M.I.D. MAIN CANAL
0.3 MI S OF LADD ROAD, Stanislaus, CA
Built 1935 Load: 16.2 t ADT: 139
DENTON ROAD
FairOver: T.I.D. MAIN CANAL
0.5 MI N OF LAKE ROAD, Stanislaus, CA
Built 1935 Load: 16.2 t ADT: 240
FULKERTH ROAD
FairOver: T.I.D. CERES MAIN CANAL
0.2 MI W/O FAITH HOME RD, Stanislaus, CA
Built 1920 Load: 16.2 t ADT: 3,669
MITCHELL ROAD
FairOver: T.I.D. LOWER LATERAL #2
JCT WITH GNDRNG RD, Stanislaus, CA
Built 1920 Load: 16.2 t ADT: 86
MILTON ROAD
FairOver: ROCK CREEK
3.4 MI N/O SR 4, Stanislaus, CA
Built 1918 Load: 16.2 t ADT: 716
5TH STREET
FairOver: CCID MAIN CANAL
AT JUNC W /ARMSTRONG RD, Stanislaus, CA
Built 1926 Load: 16.2 t ADT: 343
COOPERSTOWN ROAD
FairOver: DRY CREEK
0.8 MI NW LA GRANGE RD, Stanislaus, CA
Built 1921 Load: 16.2 t ADT: 35
MORGAN ROAD
FairOver: T.I.D. LOWER LATERAL #2
0.6 MI S/O SERVICE RD, Stanislaus, CA
Built 1930 Load: 16.2 t ADT: 3,300
DAKOTA AVENUE
FairOver: M.I.D. LATERAL #7
0.1 MI N OF BECKWITH RD, Stanislaus, CA
Built 1925 Load: 16.2 t ADT: 4,347
FAITH HOME ROAD
FairOver: T.I.D. UPPER LATERAL #3
S/O BARNHART ROAD, Stanislaus, CA
Built 1920 Load: 16.2 t ADT: 1,478
WARNERVILLE ROAD
FairOver: DRY CREEK TRIBUTARY
1 MI W CRABTREE RD, Stanislaus, CA
Built 1920 Load: 16.2 t ADT: 94
WILLIAMS ROAD
FairOver: M.I.D. LATERAL #6
0.4 MI N/O COVERT RD, Stanislaus, CA
Built 1925 Load: 16.2 t ADT: 72
JACKSON ROAD
FairOver: M.I.D. LATERAL #6
0.2 MI N/O COVERT RD, Stanislaus, CA
Built 1925 Load: 16.2 t ADT: 154
DUNN ROAD
FairOver: M.I.D. LATERAL #6
0.6 MI N/O BACON RD, Stanislaus, CA
Built 1925 Load: 16.2 t ADT: 159
ROSEMOORE AVENUE
FairOver: M.I.D. LATERAL #4
0.3 MI N/O RTE 132, Stanislaus, CA
Built 1920 Load: 16.2 t ADT: 2,655
WELLSFORD ROAD
FairOver: M.I.D. LATERAL #2
0.1 MI S/O GARST RD, Stanislaus, CA
Built 1920 Load: 16.2 t ADT: 1,500
WARNER ROAD
FairOver: T.I.D. CERES MAIN CANAL
0.5 MI W/O FAITH HOME RD, Stanislaus, CA
Built 1920 Load: 16.2 t ADT: 45
GRIFFIN ROAD
FairOver: T.I.D. UPPER LATERAL #2
NEAR JCT AT SERVICE RD, Stanislaus, CA
Built 1925 Load: 16.2 t ADT: 317
OHIO AVENUE
FairOver: M.I.D. LATERAL #5
SOUTH OF CHICAGO AVE, Stanislaus, CA
Built 1920 Load: 16.2 t ADT: 500
STATE ROUTE 20
FairOver: SUTTER CO EXTENSIONCANAL
03-SUT-020-12.17, Sutter, CA
Built 1920 Load: 16.2 t ADT: 12,000
MARCUM RD
FairOver: PING SLOUGH
1.1 MI EAST OF NICOLAUS, Sutter, CA
Built 1930 Load: 16.2 t ADT: 199
SANDERS RD
FairOver: LIVE OAK CANAL
0.01 MI W OF LARKIN RD, Sutter, CA
Built 1945 Load: 16.2 t ADT: 391
HOWSLEY ROAD
FairOver: KING RAVINE
0.2 MI W PLEASANT GROV RD, Sutter, CA
Built 1931 Load: 16.2 t ADT: 3,311
STATE ROUTE 99
FairOver: LOS MOLINOS CREEK
02-TEH-099-12.59, Tehama, CA
Built 1900 Load: 16.2 t ADT: 6,800
Showing 8,551-8,600 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.