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
CEDARS ROAD
FairOver: A.C.I.D. CANAL
.2 MI S/O BRANSTETTER LN, Shasta, CA
Built 1962 Load: 37.6 t ADT: 360
INTERSTATE 5
FairOver: CRAM GULCH
02-SIS-005-R39.02, Siskiyou, CA
Built 1969 Load: 37.6 t ADT: 7,850
INTERSTATE 5
FairOver: CRAM GULCH
02-SIS-005-R39.02, Siskiyou, CA
Built 1969 Load: 37.6 t ADT: 7,850
INTERSTATE 5 NB
FairOver: SISKIYOU WAY
02-SIS-005-R18.71-WEED, Siskiyou, CA
Built 1973 Load: 37.6 t ADT: 7,150
BECK AVE
FairOver: ALONZO DRAIN
S/O BARNHART ROAD, Solano, CA
Built 1985 Load: 37.6 t ADT: 8,980
STATE ROUTE 121
FairOver: ARROYO SECO
04-SON-121-8.43, Sonoma, CA
Built 1923 Load: 37.6 t ADT: 19,000
SLUSSER RD
FairOver: MARK WEST CREEK
0.2 MI N OF RIVER RD, Sonoma, CA
Built 1986 Load: 37.6 t ADT: 3,242
INTERSTATE 5 SB
FairOver: SACRAMENTO RIVER
02-TEH-005-R26.96-RBL, Tehama, CA
Built 1964 Load: 37.6 t ADT: 15,500
INTERSTATE 5 NB
FairOver: SACRAMENTO RIVER
02-TEH-005-R26.96-RBL, Tehama, CA
Built 1964 Load: 37.6 t ADT: 15,500
68TH AVE
FairOver: UNNAMED SLOUGH
1.0 MI E OF SR 99, Tehama, CA
Built 1930 Load: 37.6 t ADT: 450
TENTH AVE
FairOver: SOUTH FORK JEWETT CREEK
0.25 MI N/O CORNING RD, Tehama, CA
Built 1927 Load: 37.6 t ADT: 100
STATE ROUTE 36
FairOver: UPPER RATTLESNAKE CREEK
02-TRI-036-20.42, Trinity, CA
Built 1970 Load: 37.6 t ADT: 560
TELEGRAPH RD
FairOver: SANTA PAULA CREEK
0.7 MI EAST OF 10TH ST, Ventura, CA
Built 1940 Load: 37.6 t ADT: 4,500
ALISO CYN RD
FairOver: ELLSWORTH BARRANCA
1.6 MI N OF FOOTHILL RD, Ventura, CA
Built 1976 Load: 37.6 t ADT: 500
INTERSTATE 5
FairOver: CACHE CREEK
03-YOL-005-R11.44, Yolo, CA
Built 1970 Load: 37.6 t ADT: 11,750
COUNTY ROAD 31
FairOver: DRY SLOUGH
JUST EAST OF C.R. #95, Yolo, CA
Built 1959 Load: 37.6 t ADT: 5,083
C. R. #85B
FairOver: WINTERS CANAL
0.11 MI S/O S.H. 16, Yolo, CA
Built 2007 Load: 37.6 t ADT: 3,047
STATE ROUTE 162
FairOver: CANYON CREEK
03-BUT-162-29.96, Butte, CA
Built 1967 Load: 37.9 t ADT: 1,500
NELSON ROAD
FairOver: BUTTE CREEK
0.9 MI E AQUAS FRIAS RD, Butte, CA
Built 1960 Load: 37.9 t ADT: 1,138
W EVANS-REIMER RD
FairOver: SPENCER LATERAL
0.25 MI W OF BLOCK RD, Butte, CA
Built 1963 Load: 37.9 t ADT: 376
BEAR CREEK RD
FairOver: SAN PABLO CREEK
0.2 MI E/O CAMINO PABLO, Contra Costa, CA
Built 1957 Load: 37.9 t ADT: 955
LAKE EARL DRIVE
FairOver: JORDAN CREEK
3.7 MI N OF RTE 101, Del Norte, CA
Built 1954 Load: 37.9 t ADT: 4,150
ICE HOUSE RD
FairOver: JONES FK SILVER CREEK
12.8 MI N OF US 50, El Dorado, CA
Built 1961 Load: 37.9 t ADT: 1,500
N FRUIT AVE
FairOver: HERNDON CANAL
0.22 MI N DAKOTA AVE, Fresno, CA
Built 1961 Load: 37.9 t ADT: 10,846
BRICELAND-THORNE
FairOver: CHINA CREEK
5.2 MI NE SHELTER COVE, Humboldt, CA
Built 1959 Load: 37.9 t ADT: 1,328
HARRIS ROAD
FairOver: ALAMO RIVER
1.8 MI E/O MCCONNELL RD, Imperial, CA
Built 1970 Load: 37.9 t ADT: 320
KECKS ROAD
FairOver: COASTAL AQUEDUCT
1 MI WEST OF BARKER ROAD, Kern, CA
Built 1966 Load: 37.9 t ADT: 100
STATE ROUTE 29
FairOver: MARTIN STREET
01-LAK-029-R42.00, Lake, CA
Built 1972 Load: 37.9 t ADT: 6,725
BARTLETT SPRGS RD
FairOver: CACHE CREEK
23.5 MI E OF SR 20, Lake, CA
Built 1982 Load: 37.9 t ADT: 108
LASSEN ST
FairOver: SUSAN RIVER
0.3 MI S OF S.H. 36, Lassen, CA
Built 1965 Load: 37.9 t ADT: 400
I 5 SB
FairOver: SMOKEY BEAR ROAD
07-LA-005-R77.96, Los Angeles, CA
Built 1967 Load: 37.9 t ADT: 35,890
SAN FRCSQUTO CA RD
FairOver: SAN FRANCISQUITO CYN CRK
9.7MI N/O BOUQUET CYN RD, Los Angeles, CA
Built 1944 Load: 37.9 t ADT: 1
SAN FRCSQUTO CN RD
FairOver: SAN FRANCISQUITO CYN CRK
1MI S/O WAT POW PENSTKS, Los Angeles, CA
Built 1944 Load: 37.9 t ADT: 4,458
QUEENS HWY S
FairOver: HARBOR PLAZA
0.7MI W/O PICO AVE, Los Angeles, CA
Built 1969 Load: 37.9 t ADT: 2,142
AVENUE 20
FairOver: UP RR
EAST OF STATE HWY 99, Madera, CA
Built 1980 Load: 37.9 t ADT: 250
INTERSTATE 5 NB
FairOver: CALIFORNIA AQUEDUCT
10-MER-005-18.46, Merced, CA
Built 1966 Load: 37.9 t ADT: 17,300
SLEEPY HOLLOW
FairOver: SILVERADO CREEK
300 FT S/O SILVERADO RD., Orange, CA
Built 1972 Load: 37.9 t ADT: 100
INTERSTATE 10 WB
FairOver: 44TH AVENUE
08-RIV-010-R56.57-IND, Riverside, CA
Built 1972 Load: 37.9 t ADT: 28,500
INTERSTATE 40
FairOver: "L" STREET
08-SBD-040-R142.20-NED, San Bernardino, CA
Built 1973 Load: 37.9 t ADT: 7,350
MARKET ST
FairOver: CHOLLAS CREEK
450 FT W/O SR15, San Diego, CA
Built 1952 Load: 37.9 t ADT: 21,000
EL DORADO ST
FairOver: MOSHER SLOUGH
0.2 MI N GLENCANNON ST, San Joaquin, CA
Built 1969 Load: 37.9 t ADT: 9,676
STATE ROUTE 46
FairOver: BRANCH GREEN VALLEY CRK
05-SLO-046-R2.32, San Luis Obispo, CA
Built 1974 Load: 37.9 t ADT: 3,700
PREFUMO CANYON RD
FairOver: PREFUMO CANYON CREEK
2.45 MI W LOS OSOS VLY RD, San Luis Obispo, CA
Built 1974 Load: 37.9 t ADT: 300
ATASCADERO AVE
FairOver: ATASCADERO CREEK
0.12 MI NW SANTA YNEZ AVE, San Luis Obispo, CA
Built 1958 Load: 37.9 t ADT: 3,500
U.S. HIGHWAY 101
FairOver: CALTRAIN,UP RR,SIERRA PT
04-SM-101-23.66-BSBN, San Mateo, CA
Built 1956 Load: 37.9 t ADT: 196,000
ROGERS LANE
FairOver: MILLER SLOUGH
N/O 6TH ST, Santa Clara, CA
Built 1982 Load: 37.9 t ADT: 1,041
SAN JOSE RD
FairOver: W BRA SOQUEL CREEK
4.6 MI N SOQUEL DR, Santa Cruz, CA
Built 1974 Load: 37.9 t ADT: 10,000
STATE ROUTE 299
FairOver: PIT RIVER
02-SHA-299-84.48, Shasta, CA
Built 1933 Load: 37.9 t ADT: 3,050
CHURN CREEK ROAD
FairOver: CHURN CREEK
1.2 MI NO. OF KNIGHTON RD, Shasta, CA
Built 1935 Load: 37.9 t ADT: 2,770
OAKWOOD AVE
FairOver: BLUE ROCK SPRINGS CREEK
0.1 MI S REDWOOD PKWY, Solano, CA
Built 1987 Load: 37.9 t ADT: 7,931
Showing 15,601-15,650 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.