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
RIO DEL MAR BLVD
FairOver: UP RR
AT SUMMER AVE, Santa Cruz, CA
Built 1953 Load: 24.3 t ADT: 10,000
STATE ROUTE 273
FairOver: CHINA GULCH
02-SHA-273-10.97-RDG, Shasta, CA
Built 1937 Load: 24.3 t ADT: 21,400
STATE ROUTE 273
FairOver: SULPHUR CREEK
02-SHA-273-17.97-RDG, Shasta, CA
Built 1936 Load: 24.3 t ADT: 25,000
HOLIDAY ROAD
FairOver: WEST FORK STILLWATER CRK
1.0 MI N OLD OREGON TRAIL, Shasta, CA
Built 1970 Load: 24.3 t ADT: 54
PLATINA RD
FairOver: WILSON CREEK TRIBUTARY
13 MI W GAS PT RD, Shasta, CA
Built 1958 Load: 24.3 t ADT: 140
LAKE BLVD
FairOver: RICH GULCH
IN SUMMIT CITY, Shasta, CA
Built 1970 Load: 24.3 t ADT: 3,024
DERSCH RD
FairOver: HAWES GULCH
0.1 MI W OF DESCHUTES RD, Shasta, CA
Built 1960 Load: 24.3 t ADT: 2,140
OAK RUN ROAD
FairOver: OAK RUN CREEK
3.9 MI S OAK RUN TO FRN R, Shasta, CA
Built 1958 Load: 24.3 t ADT: 910
MCARTHUR ROAD
FairOver: FALL RIVER TRIBUTARY
0.5 MI N OF BROWN RD, Shasta, CA
Built 1971 Load: 24.3 t ADT: 779
CANYON CREEK RD
FairOver: CANYON HOLLOW CREEK
40FT SW FROM WESTSIDE RD, Shasta, CA
Built 1960 Load: 24.3 t ADT: 500
RADIO LANE
FairOver: OREGON GULCH
0.2 MI E EASTSIDE RD, Shasta, CA
Built 1960 Load: 24.3 t ADT: 4,110
PINON AVE
FairOver: SACRAMENTO GULCH
0.2 MI W OF SR 273, Shasta, CA
Built 1956 Load: 24.3 t ADT: 5,476
OLD OREGON TRAIL
FairOver: OLD OREGON DITCH
1.7 MI N SR 299, Shasta, CA
Built 1970 Load: 24.3 t ADT: 2,458
ASHBY RD
FairOver: TOYON CREEK
0.5 MI N PINE GROVE AVE, Shasta, CA
Built 1950 Load: 24.3 t ADT: 1,000
IRON MTN RD
FairOver: SPRING CREEK
1.4 MI N KESWICK DAM RD, Shasta, CA
Built 1960 Load: 24.3 t ADT: 114
WILDCAT RD.
FairOver: BALDWIN CREEK
0.7 MI N OF BATTLE CR RD, Shasta, CA
Built 1936 Load: 24.3 t ADT: 232
MAIN STREET
FairOver: SALT CREEK
0.1 MI E GRAND RIVER AVE, Shasta, CA
Built 1950 Load: 24.3 t ADT: 500
DUVAL DRIVE
FairOver: CHURN CREEK
0.1 MI W LAKE BLVD, Shasta, CA
Built 1960 Load: 24.3 t ADT: 100
HAPPY VALLEY RD
FairOver: SPRING GULCH
1.5 MI S CANYON RD, Shasta, CA
Built 1950 Load: 24.3 t ADT: 3,750
S COW CREEK ROAD
FairOver: TOWNSEND GULCH
4.8 MI NE OF S.R. 44, Shasta, CA
Built 1965 Load: 24.3 t ADT: 40
FRENCH GULCH ROAD
FairOver: FRENCH GULCH
2.0 MI NW/O TRINITY MTN R, Shasta, CA
Built 1965 Load: 24.3 t ADT: 60
ASH CR RD
FairOver: ASH CREEK TRIBUTARY
4.4 MI E PARKVILLE RD, Shasta, CA
Built 1950 Load: 24.3 t ADT: 200
GIRVAN RD
FairOver: BURGAN CREEK
0.9 MI E OF SR 273, Shasta, CA
Built 1960 Load: 24.3 t ADT: 7,730
CARLIE DRIVE
FairOver: YANK CREEK
0.1 MI S OLD ALTURAS RD, Shasta, CA
Built 1960 Load: 24.3 t ADT: 400
WESTSIDE RD
FairOver: MIDDLE BRANCH CARMAN CRK
5.9 MI N SR 89 & 49, Sierra, CA
Built 1950 Load: 24.3 t ADT: 670
DUNSMUIR AVENUE
FairOver: SACRAMENTO,UP RR,AMTRAK
02-SIS-005-2.65-DMR, Siskiyou, CA
Built 1966 Load: 24.3 t ADT: 5,000
STATE ROUTE 263
FairOver: SHASTA RIVER
02-SIS-263-55.03, Siskiyou, CA
Built 1931 Load: 24.3 t ADT: 1,200
STATE ROUTE 96
FairOver: STANSHAW CREEK
02-SIS-096-R8.20, Siskiyou, CA
Built 1942 Load: 24.3 t ADT: 330
STATE ROUTE 96
FairOver: LUMGREY CREEK
02-SIS-096-93.07, Siskiyou, CA
Built 1923 Load: 24.3 t ADT: 650
STATE ROUTE 96
FairOver: EMPIRE CREEK
02-SIS-096-93.09, Siskiyou, CA
Built 1923 Load: 24.3 t ADT: 800
COPCO RD
FairOver: FALL CREEK
0.3 MI W FALL CREEK RD, Siskiyou, CA
Built 1969 Load: 24.3 t ADT: 42
CRAM GULCH RD
FairOver: SCHULMEYER GULCH
OLD HWY 99, Siskiyou, CA
Built 1972 Load: 24.3 t ADT: 391
WEST ST
FairOver: HUMBUG GULCH
0.05 MI S/O MINER ST, Siskiyou, CA
Built 1965 Load: 24.3 t ADT: 165
CHINA GRADE ROAD
FairOver: CHINA CREEK
1.9 MI N. EAST HORSE CR., Siskiyou, CA
Built 1956 Load: 24.3 t ADT: 50
CORDELIA RD
FairOver: PENNSYLVANIA CREEK
0.2 MI E OF PENN AVE, Solano, CA
Built 1950 Load: 24.3 t ADT: 1,621
COLLINSVILLE RD
FairOver: LUCOL HOLLOW (BIRDS LDG)
BIRDS LANDING, Solano, CA
Built 1957 Load: 24.3 t ADT: 393
STEVENSON BR RD
FairOver: PUTAH CREEK
SOL/YOL CO LINE, Solano, CA
Built 1923 Load: 24.3 t ADT: 789
PENNSYLVANIA AVE
FairOver: PENN DITCH
NE PASEO PADRE PKWAY, Solano, CA
Built 1960 Load: 24.3 t ADT: 10,990
MARSHALL RD
FairOver: PUTAH SOUTH CANAL
0.3 MI E OF NUT TREE RD, Solano, CA
Built 1960 Load: 24.3 t ADT: 6,690
ALAMO DR
FairOver: PUTAH SOUTH CANAL
0.5 MI W OF NUT TREE RD, Solano, CA
Built 1950 Load: 24.3 t ADT: 20,190
ENGLISH HILLS RD
FairOver: SWEENEY CREEK
.5 MI S PEACEFUL GLEN RD, Solano, CA
Built 1993 Load: 24.3 t ADT: 500
ALDRIDGE RD
FairOver: PUTAH SOUTH CANAL
500 FEET W EUBANKS DR, Solano, CA
Built 1959 Load: 24.3 t ADT: 400
STATE ROUTE 121
FairOver: YELLOW CREEK
04-SON-121-6.52, Sonoma, CA
Built 1922 Load: 24.3 t ADT: 16,150
EB STATE ROUTE 12
FairOver: SANTA ROSA AVE
04-SON-012-R16.26-SRO, Sonoma, CA
Built 1964 Load: 24.3 t ADT: 36,500
REDWOOD
FairOver: LAGUNA DE SANTA ROSA
JUST W/O US 101, Sonoma, CA
Built 1956 Load: 24.3 t ADT: 2,050
REDWOOD DR
FairOver: COPELAND CREEK
0.42 MI S ROHNERT PK EXPY, Sonoma, CA
Built 1956 Load: 24.3 t ADT: 3,000
PORTER CREEK ROAD
FairOver: PORTER CREEK
24.3 MI BEGING RTE 786, Sonoma, CA
Built 1960 Load: 24.3 t ADT: 5,800
CALISTOGA RD
FairOver: WEEKS CREEK
AT ST. HELENA RD, Sonoma, CA
Built 1953 Load: 24.3 t ADT: 6,000
DRY CRK CANYON RD
FairOver: DUTCHER CREEK
INTRX DUTCHER CREEK RD, Sonoma, CA
Built 1968 Load: 24.3 t ADT: 2,800
DRY CREEK RD
FairOver: CANYON CREEK
INTERSECTION CANYON RD, Sonoma, CA
Built 1963 Load: 24.3 t ADT: 2,800
Showing 10,501-10,550 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.