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
TOMKI RD
FairOver: ROCKY CREEK
0.46 MI N CR 237, Mendocino, CA
Built 1933 Load: 24.3 t ADT: 512
TOMKI RD
FairOver: MOSSY CANYON CREEK
3.82 MI N CR 237, Mendocino, CA
Built 1960 Load: 24.3 t ADT: 393
POWER HOUSE RD
FairOver: BUSCH CREEK
0.3 MI N GIBSON LN, Mendocino, CA
Built 1948 Load: 24.3 t ADT: 440
SANFORD RANCH ROAD
FairOver: MC CLURE CREEK
0.5 MI N JCT WTH FAU 5222, Mendocino, CA
Built 1955 Load: 24.3 t ADT: 777
GEYSERS RD/CR 101A
FairOver: ASH CREEK
0.6 MI SE OF US HWY 101, Mendocino, CA
Built 1932 Load: 24.3 t ADT: 650
FOREST ROAD 600
FairOver: CASPAR CREEK
SOUTH OF JCT WITH RD 620, Mendocino, CA
Built 1972 Load: 24.3 t ADT: 10
STATE PARK ROAD
FairOver: LITTLE RIVER
VAN DAMME STATE PARK, Mendocino, CA
Built 1951 Load: 24.3 t ADT: 25
STATE ROUTE 33
FairOver: OUTSIDE CANAL
10-MER-033-18.41, Merced, CA
Built 1936 Load: 24.3 t ADT: 7,475
STATE ROUTE 140
FairOver: EL CAPITAN CANAL
10-MER-140-34.51, Merced, CA
Built 1920 Load: 24.3 t ADT: 6,500
AZUSA ROAD
FairOver: SAN JUAN CANAL
0.5 MI E OF SR 33, Merced, CA
Built 1922 Load: 24.3 t ADT: 500
SNELLING ROAD
FairOver: SOUTH FORK CANAL CREEK
3.3 MI S/O SR 59, Merced, CA
Built 1966 Load: 24.3 t ADT: 1,500
HORNITOS ROAD
FairOver: F. P. CREEK
2.3 MI SE MERCED FALLS RD, Merced, CA
Built 1971 Load: 24.3 t ADT: 300
INGOMAR GRADE ROAD
FairOver: SAN LUIS WASTEWAY
0.5 MI NW HENRY MILLER AV, Merced, CA
Built 1950 Load: 24.3 t ADT: 6,331
OSLO ROAD
FairOver: LATERAL #6
0.5 MI N AUGUST AVENUE, Merced, CA
Built 1950 Load: 24.3 t ADT: 40
YAMATO WAY
FairOver: LIVINGSTON CANAL
AT EUCALYPTUS AVE, Merced, CA
Built 1960 Load: 24.3 t ADT: 40
CENTRAL AVENUE
FairOver: LIVINGSTON CANAL
AT OLIVE AVE, Merced, CA
Built 1950 Load: 24.3 t ADT: 620
FOX ROAD
FairOver: CANAL CREEK
20 FT. N BELLEVUE ROAD, Merced, CA
Built 1960 Load: 24.3 t ADT: 145
REILLY ROAD
FairOver: MILES CREEK
0.7 MI E OF SR 59, Merced, CA
Built 1955 Load: 24.3 t ADT: 150
EAST YOSEMITE AVE
FairOver: FAIRFIELD CANAL
0.9 MI W ARBOLEDA DR, Merced, CA
Built 1950 Load: 24.3 t ADT: 2,569
BUTTS ROAD
FairOver: DELTA-MENDOTA CANAL
0.7 MI W WHITWORTH ROAD, Merced, CA
Built 1950 Load: 24.3 t ADT: 10
WALTZ ROAD
FairOver: BEAR CREEK
1.2 MI NE CUNNINGHAM ROAD, Merced, CA
Built 1965 Load: 24.3 t ADT: 38
TYLER ROAD
FairOver: MILES CREEK
0.38 MI NORTH REILLY ROAD, Merced, CA
Built 1962 Load: 24.3 t ADT: 50
INDIANA AVENUE
FairOver: ARROYO CANAL
2.0 MI S OF SR 152, Merced, CA
Built 1958 Load: 24.3 t ADT: 1,095
INDIANA AVENUE
FairOver: POSO SLOUGH
2.8 MI SOUTH OF SR 152, Merced, CA
Built 1964 Load: 24.3 t ADT: 1,273
PALM AVENUE
FairOver: SAN JUAN CANAL
0.5 MI S OF SR 152, Merced, CA
Built 1959 Load: 24.3 t ADT: 1,610
DENTON ROAD
FairOver: SAN JUAN CANAL
0.1 MI W OF PALM AVE, Merced, CA
Built 1959 Load: 24.3 t ADT: 400
HEALY ROAD
FairOver: DUTCHMAN CREEK
0.1 MI N SANDY MUSH ROAD, Merced, CA
Built 1972 Load: 24.3 t ADT: 400
SANDY MUSH ROAD
FairOver: DUTCHMAN CREEK
4.2 MI W OF SR 99, Merced, CA
Built 1972 Load: 24.3 t ADT: 400
KAHLON ROAD
FairOver: MARIPOSA CREEK
2.4 MI SE OF E MISSION RD, Merced, CA
Built 1938 Load: 24.3 t ADT: 384
OLD STATE ROUTE 99
FairOver: FARMDALE SLOUGH
0.2 MI SE/O E MISSION AV, Merced, CA
Built 1938 Load: 24.3 t ADT: 270
OLD STATE ROUTE 99
FairOver: NORTH FARMDALE SLOUGH
0.2 MI NW/O E MISSION AV, Merced, CA
Built 1938 Load: 24.3 t ADT: 270
STATE ROUTE 299
FairOver: DRY CREEK
02-MOD-299-0.93-ADIN, Modoc, CA
Built 1929 Load: 24.3 t ADT: 1,400
STATE ROUTE 299
FairOver: DUTCH FLAT CREEK
02-MOD-299-2.45, Modoc, CA
Built 1936 Load: 24.3 t ADT: 1,110
ESTES STREET
FairOver: NORTH FORK PIT RIVER
0.1 MI N PARKER CREEK RD, Modoc, CA
Built 1971 Load: 24.3 t ADT: 620
CO RD 56
FairOver: ALTURAS CREEK
0.50 MI E/O US 395, Modoc, CA
Built 1938 Load: 24.3 t ADT: 800
EAST LAUREL AVE
FairOver: GABLIAN CREEK
0.2 MI E CONSTITUTION BLV, Monterey, CA
Built 1970 Load: 24.3 t ADT: 19,000
PINE AVE
FairOver: CLARK COLONY WATER CANAL
AT PEACH ROAD, Monterey, CA
Built 1962 Load: 24.3 t ADT: 140
POPE VALLEY RD
FairOver: DUVALL CREEK
5.50 MI S LAKE CO LINE, Napa, CA
Built 1972 Load: 24.3 t ADT: 1,658
CRYSTAL SPRINGS RD
FairOver: BELL CREEK
0.9 MI N SANITARIAN RD, Napa, CA
Built 1970 Load: 24.3 t ADT: 209
RAGATZ LANE
FairOver: NAPA RIVER OVERFLOW
0.45 MI NE FRONTAGE RD, Napa, CA
Built 1950 Load: 24.3 t ADT: 161
CHILES POPE VLY RD
FairOver: CHILES CREEK
4.0 MI N OF SR 128, Napa, CA
Built 1968 Load: 24.3 t ADT: 750
TROWER AVE
FairOver: NAPA DRAIN
JUST E JEFFERSON ST, Napa, CA
Built 1970 Load: 24.3 t ADT: 1,673
ADAMS AVENUE
FairOver: TALBERT CHANNEL
0.25 MI E/O MAGNOLIA ST, Orange, CA
Built 1959 Load: 24.3 t ADT: 32,000
SILVERADO CNYN RD.
FairOver: SILVERADO CANYON CREEK
1.6 MI E/O SANTIAGO ROAD, Orange, CA
Built 1935 Load: 24.3 t ADT: 2,000
THISA WAY
FairOver: SILVERADO CANYON CREEK
200' S/O SILVERADO CYN RD, Orange, CA
Built 1965 Load: 24.3 t ADT: 200
PASEO DE VALENCIA
FairOver: ALISO CREEK
0.8 MI N OF ALICIA PKWY, Orange, CA
Built 1966 Load: 24.3 t ADT: 32,800
MOULTON PARKWAY
FairOver: ALICIA CREEK
200' NW ALICIA PKWAY, Orange, CA
Built 1968 Load: 24.3 t ADT: 20,900
MOULTON PARKWAY
FairOver: PEDESTRIAN & BIKE ACCESS
200' N OF LA PAZ RD, Orange, CA
Built 1968 Load: 24.3 t ADT: 21,000
BERKLEY AVE
FairOver: BREA CREEK CHANNEL
0.1 MI E/O HARBOR BLVD, Orange, CA
Built 1966 Load: 24.3 t ADT: 12,900
DOROTHY LN
FairOver: FULLERTON CRK CHANNEL
0.05 MI E/O ACACIA AVE, Orange, CA
Built 1955 Load: 24.3 t ADT: 7,200
Showing 10,251-10,300 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.