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
E210-HUNTINGTON DR
FairOver: BRADBURY FC CH
07-LA-210-R36.51-IRW, Los Angeles, CA
Built 1968 Load: 35.3 t ADT: 10,400
GARVEY AVE
FairOver: ALHAMBRA WASH
100FT W/O SAN GAB BLVD, Los Angeles, CA
Built 1935 Load: 35.3 t ADT: 30,660
LOS COYOTES DIAG
FairOver: LOS CERRITOS DRN CH
150FT S/O SPRING ST, Los Angeles, CA
Built 1954 Load: 35.3 t ADT: 28,620
LA MIRADA BLVD
FairOver: LEFFINGWELL CR
0.1MI N/O MULBERRY DRIVE, Los Angeles, CA
Built 1963 Load: 35.3 t ADT: 16,218
121ST ST E
FairOver: CALIFORNIA AQUEDUCT
0.3MI N/O FT TEJON RD, Los Angeles, CA
Built 1969 Load: 35.3 t ADT: 297
PT REYES PETLMA RD
FairOver: SAN ANTONIO CREEK
AT MARIN SONOMA CO LINE, Marin, CA
Built 1964 Load: 35.3 t ADT: 1,450
ROAD 20N05
FairOver: EEL RIVER
38 MI. WEST OF ELK CREEK, Mendocino, CA
Built 1981 Load: 35.3 t ADT: 5
SOUTH FIRST STREET
FairOver: SAN LORENZO CREEK
0.15 MI NW LONOAK RD, Monterey, CA
Built 2009 Load: 35.3 t ADT: 6,518
46TH STREET
FairOver: RUBIDOUX CHANNEL
0.3 MI. SE/O RIVERVIEW DR, Riverside, CA
Built 1972 Load: 35.3 t ADT: 3,774
STATE ROUTE 104
FairOver: SKUNK CREEK
03-SAC-104-4.30, Sacramento, CA
Built 1918 Load: 35.3 t ADT: 4,300
MILL CREEK ROAD
FairOver: SANTA ANA RIVER
3.0 MI W OF GLASS RD, San Bernardino, CA
Built 1950 Load: 35.3 t ADT: 140
SIXTH ST
FairOver: TWIN WARM CREEK
0.3 MI E WATERMAN AVE, San Bernardino, CA
Built 1961 Load: 35.3 t ADT: 3,839
STATE ROUTE 52 WB
FairOver: PARK
11-SD-052-1.93-SD, San Diego, CA
Built 1970 Load: 35.3 t ADT: 48,500
ROUTE I 280 SB
FairOver: SFWD WATER MAIN
04-SF-280-R4.05L-SF, San Francisco, CA
Built 1960 Load: 35.3 t ADT: 91,000
STATE ROUTE 46
FairOver: CHOLAME CREEK
05-SLO-046-54.77, San Luis Obispo, CA
Built 1954 Load: 35.3 t ADT: 14,800
STATE ROUTE 92
FairOver: PILARCITOS CREEK
04-SM-092-3.30, San Mateo, CA
Built 1965 Load: 35.3 t ADT: 23,300
ALISOS ROAD
FairOver: HAPPY CANYON CREEK
0.13 MI S HAPPY CANYON RD, Santa Barbara, CA
Built 1969 Load: 35.3 t ADT: 387
STATE ROUTE 44
FairOver: CHURN CREEK
02-SHA-044-R1.56-RDG, Shasta, CA
Built 1968 Load: 35.3 t ADT: 24,250
DERSCH RD
FairOver: DRY CREEK
2.8 MI W ASH CREEK RD, Shasta, CA
Built 1963 Load: 35.3 t ADT: 1,550
BOULDER CREEK RD
FairOver: BOULDER CREEK
0.4 MI E CANYON CRK RD, Siskiyou, CA
Built 1993 Load: 35.3 t ADT: 8
E80-N113 CONNECTOR
FairOver: SOUTH FORK PUTAH CREEK
04-SOL-080-42.37, Solano, CA
Built 1974 Load: 35.3 t ADT: 9,900
WILDWOOD ROAD
FairOver: CARR CREEK
0.1 MI E OF S.R. 3, Trinity, CA
Built 1950 Load: 35.3 t ADT: 330
STATE ROUTE 126
FairOver: TODD BARRANCA
07-VEN-126-R7.81, Ventura, CA
Built 1965 Load: 35.3 t ADT: 25,000
INTERSTATE 10 EB
FairOver: RUBIO WASH
07-LA-010-26.73-RSMD, Los Angeles, CA
Built 1953 Load: 35.4 t ADT: 104,000
DONNER PASS RD
FairOver: DONNER SUMMIT
2.0 MI W DONNER LAKE, Nevada, CA
Built 1925 Load: 35.4 t ADT: 552
INTERSTATE 580 EB
FairOver: UP RR, BNSF RY, & ACE
04-ALA-580-R8.00, Alameda, CA
Built 1969 Load: 35.6 t ADT: 88,000
INTERSTATE 680
FairOver: UP RR & FLOOD CNTRL CHNN
04-ALA-680-R15.89-PLE, Alameda, CA
Built 1967 Load: 35.6 t ADT: 122,000
HUMBOLDT RD
FairOver: BUTTE CREEK
6.5 MI E JCT WITH S.R. 32, Butte, CA
Built 1976 Load: 35.6 t ADT: 401
CANA HWY
FairOver: DIANNE'S DITCH #3
0.9 MI W OF SH 99, Butte, CA
Built 1967 Load: 35.6 t ADT: 210
NELSON ROAD
FairOver: CREED SLOUGH
0.7 MI E OF 7 MILE LANE, Butte, CA
Built 1966 Load: 35.6 t ADT: 538
NELSON RD
FairOver: EDGAR SLOUGH
0.8 MI EAST OF 7 MILE LNE, Butte, CA
Built 1966 Load: 35.6 t ADT: 640
GAIL AVE (OLD 99W)
FairOver: SALT CREEK
0.1 MI N OF GRIMES RD, Colusa, CA
Built 1967 Load: 35.6 t ADT: 5,151
COUNTY RD P
FairOver: WILLOW CREEK
2.8 MI N OF CO RD #60, Glenn, CA
Built 1970 Load: 35.6 t ADT: 249
MAPLE HILLS RD
FairOver: SOUTH FORK EEL RIVER
JUST N/E OF HWY 101, Humboldt, CA
Built 1957 Load: 35.6 t ADT: 1,005
SR 7 AUTO TRAFFIC
FairOver: SOUTH ALAMO CANAL
11-IMP-007-S0.35, Imperial, CA
Built 1996 Load: 35.6 t ADT: 9,400
KLOKE RD
FairOver: ALL AMERICAN CANAL
0.5 MI N/O OF SR-98, Imperial, CA
Built 1965 Load: 35.6 t ADT: 1,800
KNUDSEN DRIVE
FairOver: BEARDSLEY CANAL
0.2 MI S/O NORRIS RD, Kern, CA
Built 1947 Load: 35.6 t ADT: 4,300
MONTEREY TRAIL RD
FairOver: CUDDY CREEK
0.01 MI N FRAZIER MTN RD, Kern, CA
Built 1971 Load: 35.6 t ADT: 2,730
BELL PARK AVE
FairOver: SEIGLER CREEK
S SR 29 IN LOWER LAKE, Lake, CA
Built 1966 Load: 35.6 t ADT: 200
S5-STADIUM WAY OFF
FairOver: NEWELL STREET
07-LA-005-22.26-LA, Los Angeles, CA
Built 1961 Load: 35.6 t ADT: 2,450
N&S101-S110 CONNEC
FairOver: TEMPLE STREET
07-LA-101-1.63-LA, Los Angeles, CA
Built 1948 Load: 35.6 t ADT: 76,801
INTERSTATE 10 WB
FairOver: RUBIO WASH
07-LA-010-26.73-RSMD, Los Angeles, CA
Built 1953 Load: 35.6 t ADT: 104,000
INTERSTATE 5
FairOver: PACOIMA WASH
07-LA-005-39.19-LA, Los Angeles, CA
Built 1963 Load: 35.6 t ADT: 275,000
E22&S605-N405 CONN
FairOver: SAN GABRIEL RIVER
07-LA-405-0.02-LBCH, Los Angeles, CA
Built 1966 Load: 35.6 t ADT: 40,000
STATE ROUTE 14
FairOver: NEWHALL AVENUE
07-LA-014-R27.04, Los Angeles, CA
Built 1971 Load: 35.6 t ADT: 148,000
PLACERITA CYN RD
FairOver: SAND CYN WASH
0.1MI W/O SAND CYN RD, Los Angeles, CA
Built 1958 Load: 35.6 t ADT: 2,197
AVE 7 1/2
FairOver: SAN JOAQUIN RIV OVRFLOW
JUST E OF FRESNO CO LINE, Madera, CA
Built 1948 Load: 35.6 t ADT: 4,311
AVENUE 21
FairOver: EASTSIDE BYPASS CHANNEL
1.25 MI W OF RD 4, Madera, CA
Built 1963 Load: 35.6 t ADT: 94
ROAD 416
FairOver: COARSE GOLD CREEK
0.6 MI W/O SR 41, Madera, CA
Built 1980 Load: 35.6 t ADT: 75
STATE ROUTE 1
FairOver: OLEMA CREEK
04-MRN-001-22.81, Marin, CA
Built 1928 Load: 35.6 t ADT: 2,900
Showing 15,251-15,300 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.