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
WILSON RANCH ROAD
FairOver: CALIFORNIA AQUEDUCT
1.9 MI S OF PALMDALE RD, San Bernardino, CA
Built 1971 Load: 24.9 t ADT: 63
U.S. HIGHWAY 101
FairOver: TOLL PLAZA UNDERCROSSING
04-SF-101-9.85, San Francisco, CA
Built 1937 Load: 24.9 t ADT: 114,400
BLEWETT ROAD
FairOver: CALIFORNIA AQUEDUCT
1.3 MI W KOSTER RD, San Joaquin, CA
Built 1967 Load: 24.9 t ADT: 200
DAVENPORT CREEK RD
FairOver: DAVENPORT CREEK
0.7 MI S BUCKLEY RD, San Luis Obispo, CA
Built 1959 Load: 24.9 t ADT: 1,373
NORTE RD
FairOver: BRA SANTA MARGARITA CRK
WEST OF OAK RD, San Luis Obispo, CA
Built 1956 Load: 24.9 t ADT: 50
TASSAJARA RD
FairOver: TASSAJARA CREEK
2.1 MI W US 101, San Luis Obispo, CA
Built 1960 Load: 24.9 t ADT: 228
MAPLE ST
FairOver: REDWOOD CREEK
NORTH LATHROP ST, San Mateo, CA
Built 1919 Load: 24.9 t ADT: 2,350
US HIGHWAY 101 SB
FairOver: EL CAPITAN STATE BEACH
05-SB-101-33.85, Santa Barbara, CA
Built 1958 Load: 24.9 t ADT: 16,000
MONROE ST
FairOver: SAN TOMAS AQUINO CREEK
NEAR SAN TOMAS EXPWY, Santa Clara, CA
Built 1966 Load: 24.9 t ADT: 15,780
MC LAUGHLIN DRIVE
FairOver: ABANDONED QUARRY ROAD
UNIVERSITY CA SANTA CRUZ, Santa Cruz, CA
Built 1966 Load: 24.9 t ADT: 3,500
OLD OREGON TRAIL
FairOver: WEST FORK STILLWATER CRK
0.3 MI E OASIS & AKRICH, Shasta, CA
Built 1976 Load: 24.9 t ADT: 2,458
NO DATA ENTERED
FairOver: ELK CREEK
ELK-THOMPSON, Siskiyou, CA
Built 1971 Load: 24.9 t ADT: 30
INTERSTATE 80 WB
FairOver: SWEENEY CREEK
04-SOL-080-32.90, Solano, CA
Built 1946 Load: 24.9 t ADT: 81,500
STATE ROUTE 12 WB
FairOver: NWP RR
04-SON-012-R15.56-SRO, Sonoma, CA
Built 1964 Load: 24.9 t ADT: 36,500
WEST OLIVE ST
FairOver: SANTA ROSA CREEK
WEST OLIVE ST, Sonoma, CA
Built 1962 Load: 24.9 t ADT: 8,200
PRESSLEY RD
FairOver: COPELAND CREEK
0.1 MI N LICHAU RD, Sonoma, CA
Built 1968 Load: 24.9 t ADT: 1,000
STATE ROUTE 108
FairOver: M.I.D. CANAL
10-STA-108-29.86, Stanislaus, CA
Built 1915 Load: 24.9 t ADT: 20,200
INTERSTATE 5 SB
FairOver: CALIFORNIA AQUEDUCT
10-STA-005-6.47, Stanislaus, CA
Built 1967 Load: 24.9 t ADT: 17,500
INTERSTATE 5 NB
FairOver: CALIFORNIA AQUEDUCT
10-STA-005-6.47, Stanislaus, CA
Built 1967 Load: 24.9 t ADT: 17,500
INTERSTATE 5 SB
FairOver: SALADO CREEK
10-STA-005-12.68, Stanislaus, CA
Built 1967 Load: 24.9 t ADT: 18,000
SULLIVAN ROAD
FairOver: CALIFORNIA AQUEDUCT
1.68 MI WEST OF EASTIN RD, Stanislaus, CA
Built 1964 Load: 24.9 t ADT: 75
STATE ROUTE 36
FairOver: GURNSEY CREEK
02-TEH-036-97.67, Tehama, CA
Built 1929 Load: 24.9 t ADT: 1,100
PLANO ST
FairOver: PORTER SLOUGH
0.5 MI N SR 190, Tulare, CA
Built 1954 Load: 24.9 t ADT: 10,700
ROAD 124
FairOver: ALTA CANAL
0.4 MI N OF AVE 424, Tulare, CA
Built 1948 Load: 24.9 t ADT: 1,050
AVE 422
FairOver: SAND CREEK
0.5 MI E OF SR 63, Tulare, CA
Built 1950 Load: 24.9 t ADT: 250
CR #40-A (RUMSEY)
FairOver: PINE CREEK
0.14 MI N/O SH 16, Yolo, CA
Built 1960 Load: 24.9 t ADT: 35
BALLENA BLVD
FairOver: BALLENA BAY
0.1 MI S OF CENTRAL AVE, Alameda, CA
Built 1966 Load: 25.3 t ADT: 1,621
STATE ROUTE 162
FairOver: THERMALITO AFTERBAY
03-BUT-162-R10.12, Butte, CA
Built 1967 Load: 25.3 t ADT: 2,800
STATE ROUTE 70
FairOver: MIDDLE HONCUT CREEK
03-BUT-070-0.09, Butte, CA
Built 1941 Load: 25.3 t ADT: 11,700
STATE ROUTE 70
FairOver: SLIP OUT
03-BUT-070-28.76, Butte, CA
Built 1970 Load: 25.3 t ADT: 2,550
FARRIS RD
FairOver: MAIN DRAINAGE CANAL
2.5 MI W OF BIGGS-GRID RD, Butte, CA
Built 1940 Load: 25.3 t ADT: 280
WATERFRONT RD
FairOver: PACHECO SLOUGH
0.3 MI WEST SOLANO WAY, Contra Costa, CA
Built 1948 Load: 25.3 t ADT: 2,409
BALFOUR RD.
FairOver: MARSH CREEK
1.1 MI WEST OF SR 4, Contra Costa, CA
Built 1996 Load: 25.3 t ADT: 10,600
GASQUET FLAT ROAD
FairOver: MIDDLE FORK SMITH RIVER
0.1 MILE N/O RTE 199, Del Norte, CA
Built 1960 Load: 25.3 t ADT: 400
S MAPLE AVE
FairOver: GRANT CANAL
0.15 MI S/O WOOD AVE, Fresno, CA
Built 1946 Load: 25.3 t ADT: 234
E LINCOLN AVE
FairOver: COLE SLOUGH CANAL
0.65 MI E OF ACADEMY AVE, Fresno, CA
Built 1925 Load: 25.3 t ADT: 300
S PLACER AVE
FairOver: JAMES BYPASS CANAL
0.28 MI N/O LINCOLN, Fresno, CA
Built 1984 Load: 25.3 t ADT: 2,000
DE WOODY AVE
FairOver: GRANT CANAL
0.7 MI EAST OF FOWLER AVE, Fresno, CA
Built 1932 Load: 25.3 t ADT: 1,000
FORT SEWARD RD
FairOver: EEL RIVER
6 MI E DYERVILLE LOOP RD, Humboldt, CA
Built 1958 Load: 25.3 t ADT: 350
STATE ROUTE 111
FairOver: SY WASH
11-IMP-111-49.20, Imperial, CA
Built 1950 Load: 25.3 t ADT: 3,600
GLACIER LODGE RD
FairOver: BIG PINE CREEK
3.8 MI W OF ROUTE 395, Inyo, CA
Built 1987 Load: 25.3 t ADT: 510
ROAD 30N03
FairOver: SUSAN RIVER
14 MI W SUSANVILLE, Lassen, CA
Built 1972 Load: 25.3 t ADT: 20
INTERSTATE 5
FairOver: MARIETTA STREET
07-LA-005-16.29-LA, Los Angeles, CA
Built 1948 Load: 25.3 t ADT: 258,000
AMELIA AVE
FairOver: SAN DIMAS WASH
0.1MI N/O FOOTHILL AVE, Los Angeles, CA
Built 1962 Load: 25.3 t ADT: 7,262
GREENLEAF BLVD
FairOver: COMPTON CRK
0.1MI W/O WILLOWBROOK AVE, Los Angeles, CA
Built 1963 Load: 25.3 t ADT: 8,446
STATE ROUTE 99 SB
FairOver: ASH SLOUGH
06-MAD-099-26.80, Madera, CA
Built 1957 Load: 25.3 t ADT: 19,250
FLAMINGO RD
FairOver: COYOTE CREEK
0.17 MI N MARINE AVE, Marin, CA
Built 1964 Load: 25.3 t ADT: 1,705
WHITE ROCK ROAD
FairOver: DEADMAN CREEK
0.05 MI E WESTFALL RD, Mariposa, CA
Built 1960 Load: 25.3 t ADT: 20
U.S. HIGHWAY 101
FairOver: FELIZ CREEK
01-MEN-101-10.68, Mendocino, CA
Built 1934 Load: 25.3 t ADT: 13,800
STATE ROUTE 128
FairOver: NORTH FORK NAVARRO RIVER
01-MEN-128-12.68, Mendocino, CA
Built 1953 Load: 25.3 t ADT: 3,300
Showing 10,801-10,850 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.