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 96
FairOver: SLATE CREEK
01-HUM-096-29.92, Humboldt, CA
Built 1960 Load: 12.3 t ADT: 540
HARDING AVENUE
FairOver: LATERAL #6
0.4 MI E OF MERCED AVE, Merced, CA
Built 1924 Load: 12.3 t ADT: 173
NAT TRAILS HWY
FairOver: ROCAS DITCH
13.9 MI E OF CRUCERO RD, San Bernardino, CA
Built 1930 Load: 12.3 t ADT: 235
NAT TRAILS HWY
FairOver: EL ROVIA DITCH
21.7 MI E OF CRUCERO RD, San Bernardino, CA
Built 1930 Load: 12.3 t ADT: 235
NAT TRAILS HWY
FairOver: CERRO DITCH
1.3 MI E OF AMBOY RD, San Bernardino, CA
Built 1930 Load: 12.3 t ADT: 790
NAT TRAILS HWY
FairOver: AVA DITCH
19.6 MI E KELBAKER RD, San Bernardino, CA
Built 1930 Load: 12.3 t ADT: 502
LIME CREEK RD
FairOver: YOUNGS CREEK
0.4 MI SW OF SR 12, Calaveras, CA
Built 1917 Load: 12.6 t ADT: 180
BUCKS LAKE ROAD
FairOver: BIG GRIZZLEY CREEK
1.7MI W BUCKS LAKE DAM RD, Plumas, CA
Built 2011 Load: 12.6 t ADT: 350
DAGGETT-YERMO RD
FairOver: MOJAVE RIVER
0.5 MI N OF NATL TRA HWY, San Bernardino, CA
Built 1941 Load: 12.6 t ADT: 2,919
NAT TRAILS HWY
FairOver: PASTEL DITCH
6.8 MI E KELBAKER RD, San Bernardino, CA
Built 1930 Load: 12.6 t ADT: 502
NAT TRAILS HWY
FairOver: RODILLA DITCH
13.2 MI E KELBAKER RD, San Bernardino, CA
Built 1930 Load: 12.6 t ADT: 502
NAT TRAILS HWY
FairOver: TARECO DITCH
19.2 MI E KELBAKER RD, San Bernardino, CA
Built 1930 Load: 12.6 t ADT: 502
MADONNA RD
FairOver: PREFUMO CREEK
SLO CTY, San Luis Obispo, CA
Built 1958 Load: 12.6 t ADT: 26,985
SKITTONE ROAD
FairOver: M.I.D. MAIN CANAL
0.05 MI S OF SR 108, Stanislaus, CA
Built 1952 Load: 12.6 t ADT: 244
PASKENTA ROAD
FairOver: ELDER CREEK
3.4 MI S OF DUSTY RD, Tehama, CA
Built 1948 Load: 12.6 t ADT: 200
AVE 194 (8TH AVE)
FairOver: FRIANT-KERN CANAL
AT ROAD 234, Tulare, CA
Built 1949 Load: 12.6 t ADT: 75
ROUTE 11
FairOver: UPPER CLEAR CREEK
0.2 miles N of Hwy 299 (M, Shasta, CA
Built 1940 Load: 12.7 t ADT: 30
SERVICE ROAD
FairOver: CRYSTAL CREEK
0.1 miles S of Hwy 299 (M, Shasta, CA
Built 1940 Load: 12.7 t ADT: 50
INTERSTATE 5 NB
FairOver: CALIFORNIA AQUEDUCT
06-KER-005-12.47, Kern, CA
Built 1967 Load: 13.0 t ADT: 24,375
ENTERPRISE CONCRSE
FairOver: COYOTE CREEK TRIBUTARY
.02 MI W TENNESSEE VLY RD, Marin, CA
Built 1950 Load: 13.0 t ADT: 70
REYNOLDS HIGHWAY
FairOver: OUTLET CREEK
1.1 MI WEST OF US 101, Mendocino, CA
Built 1955 Load: 13.0 t ADT: 19
RG STATE PARK ROAD
FairOver: RUSSIAN GULCH
RUSSIAN GULCH STATE PARK, Mendocino, CA
Built 1960 Load: 13.0 t ADT: 45
MISSION AVENUE
FairOver: DUCK SLOUGH
0.5 MI E BURCHELL AVENUE, Merced, CA
Built 1941 Load: 13.0 t ADT: 20
CITRUS AVE
FairOver: UP RR & AMTRAK
200' S OF I-10, San Bernardino, CA
Built 1960 Load: 13.0 t ADT: 22,972
NAT TRAILS HWY
FairOver: BAGDAD DITCH
20.9 MI E CRUCERO RD, San Bernardino, CA
Built 1930 Load: 13.0 t ADT: 235
NAT TRAILS HWY
FairOver: URLAN DITCH
7.6 MI E KELBAKER RD, San Bernardino, CA
Built 1930 Load: 13.0 t ADT: 502
NAT TRAILS HWY
FairOver: AVERILL DITCH
1.0 MI E OF ESSEX RD, San Bernardino, CA
Built 1930 Load: 13.0 t ADT: 502
ALAMITOS ROAD
FairOver: HERBERT CREEK
1.1 MI SW JCT OF HICK RD, Santa Clara, CA
Built 1956 Load: 13.0 t ADT: 10
RAILROAD PARK ROAD
FairOver: LITTLE CASTLE CREEK
0.1 MI W OF I-5, Siskiyou, CA
Built 1960 Load: 13.0 t ADT: 126
STATE ROUTE 116
FairOver: JONES CREEK
04-SON-116-19.90, Sonoma, CA
Built 1921 Load: 13.0 t ADT: 12,400
RAWSON ROAD
FairOver: WILLOW CREEK
0.05 MI N/O CHARD AVE, Tehama, CA
Built 1956 Load: 13.0 t ADT: 1,218
AVENUE 436
FairOver: FRIANT-KERN CANAL
0.1 MI EAST OF ROAD 140, Tulare, CA
Built 1949 Load: 13.0 t ADT: 50
ROAD 180
FairOver: FRIANT-KERN CANAL
0.2 MI NORTH OF AVE 388, Tulare, CA
Built 1949 Load: 13.0 t ADT: 42
ROAD 184
FairOver: FRIANT-KERN CANAL
0.4 MI NORTH OF AVE 384, Tulare, CA
Built 1949 Load: 13.0 t ADT: 5
WARDS FERRY RD
FairOver: DEER CREEK
4.95 MI N OF GROVELAND, Tuolumne, CA
Built 1915 Load: 13.0 t ADT: 120
INTERSTATE 5 SB
FairOver: YOLO BYPASS
03-YOL-005-0.84, Yolo, CA
Built 1969 Load: 13.0 t ADT: 25,500
INTERSTATE 5 NB
FairOver: YOLO BYPASS
03-YOL-005-0.84, Yolo, CA
Built 1969 Load: 13.0 t ADT: 25,500
W MT WHITNEY AVE
FairOver: FRESNO SLOUGH
0.8 MI E OF DICKENSON AVE, Fresno, CA
Built 1955 Load: 13.3 t ADT: 2,700
STATE PARK ROAD
FairOver: LAGUNITAS CREEK
SAMUEL P TAYLOR STATE PK, Marin, CA
Built 1947 Load: 13.3 t ADT: 50
NAT TRAILS HWY
FairOver: ZANZA DITCH
14.8 MI E OF CRUCERO RD, San Bernardino, CA
Built 1930 Load: 13.3 t ADT: 235
NAT TRAILS HWY
FairOver: NOLA DITCH
15.5 MI E OF CRUCERO RD, San Bernardino, CA
Built 1930 Load: 13.3 t ADT: 235
ELLER LANE
FairOver: SCOTT RIVER
JUST EAST OF ISLAND RD, Siskiyou, CA
Built 1910 Load: 13.3 t ADT: 172
WATMAUGH ROAD
FairOver: SONOMA CREEK
0.3 MI WEST OF SR 12, Sonoma, CA
Built 1929 Load: 13.3 t ADT: 3,628
AVENUE 152
FairOver: FRIANT-KERN CANAL
0.25 MI WEST OF ROAD 216, Tulare, CA
Built 1949 Load: 13.3 t ADT: 4,290
ROAD 176
FairOver: FRIANT-KERN CANAL
0.3 MI NORTH OF A390, Tulare, CA
Built 1949 Load: 13.3 t ADT: 42
AVENUE 192
FairOver: FRIANT-KERN CANAL
0.1 MI EAST OF ROAD 232, Tulare, CA
Built 1949 Load: 13.3 t ADT: 75
AVENUE 392
FairOver: KINGSBURG CANAL
ROAD 16, Tulare, CA
Built 1939 Load: 13.3 t ADT: 75
CARNE RD
FairOver: THACHER CREEK
0.1 MI N OF S.R. 150, Ventura, CA
Built 1928 Load: 13.3 t ADT: 900
OLD 40 MILE RD
FairOver: EAST BEST SLOUGH
0.4 MI E OF 40 MI RD, Yuba, CA
Built 1927 Load: 13.3 t ADT: 50
S HILLS VALLEY RD
FairOver: FRIANT-KERN CANAL
0.2 MI SOUTH OF PARK BLVD, Fresno, CA
Built 1947 Load: 13.6 t ADT: 5,835
Showing 7,951-8,000 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.