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
US HIGHWAY 101 NB
GoodOver: GANNON SLOUGH
01-HUM-101-84.70-ARC, Humboldt, CA
Built 1955 Load: 45.0 t ADT: 17,500
REYNOLDS ROAD
GoodOver: BIG PINE CREEK CANAL
0.1 MI W OF RTE 395 JCT, Inyo, CA
Built 1965 Load: 45.0 t ADT: 475
LA TIJERA BLVD
GoodOver: CENTINELA CREEK
50FT E/O ROUTE I-405, Los Angeles, CA
Built 1936 Load: 45.0 t ADT: 30,500
VICTORY BLVD
GoodOver: BELL CREEK (S FORK)
0.1 MI E/O PLATT AVE, Los Angeles, CA
Built 1959 Load: 45.0 t ADT: 27,000
AVE H
GoodOver: CALIFORNIA AQUEDUCT
1.0MI S/O LANCASTER RD, Los Angeles, CA
Built 1967 Load: 45.0 t ADT: 101
FAURE AVE
GoodOver: SAN JOSE CRK
0.5MI S/O VALLEY, Los Angeles, CA
Built 2003 Load: 45.0 t ADT: 32,208
STATE ROUTE 49
GoodOver: STOCKTON CREEK
10-MPA-049-17.20, Mariposa, CA
Built 1967 Load: 45.0 t ADT: 7,900
ORR SPRINGS RD
GoodOver: SOUTH FORK BIG RIVER
14.8 MI W SH 101, Mendocino, CA
Built 1976 Load: 45.0 t ADT: 134
HAWN CREEK RD
GoodOver: WILLIAMS CREEK
0.5 MI S GIBSON LANE, Mendocino, CA
Built 1930 Load: 45.0 t ADT: 1,375
Canyon Road
GoodOver: San Luis Canal
2.8 MI S PIONEER ROAD, Merced, CA
Built 1968 Load: 45.0 t ADT: 260
INTERSTATE 215 SB
GoodOver: KELLER ROAD
08-RIV-215-R14.50, Riverside, CA
Built 1979 Load: 45.0 t ADT: 121,000
INTERSTATE 15 NB
GoodOver: HALLORAN WASH
08-SBD-015-147.64, San Bernardino, CA
Built 1961 Load: 45.0 t ADT: 18,500
KILE ROAD
GoodOver: BEAVER SLOUGH
3.2 MI N PELTIER RD, San Joaquin, CA
Built 1941 Load: 45.0 t ADT: 478
MARINERS DR
GoodOver: MOSHER SLOUGH
0.1 KM W OF RTE 5, San Joaquin, CA
Built 1975 Load: 45.0 t ADT: 3,300
SAN TOMAS EXPWY
GoodOver: LOS GATOS CREEK
0.01 MI N SH 17, Santa Clara, CA
Built 1968 Load: 45.0 t ADT: 62,140
INTERSTATE 5
GoodOver: SHASTA RIVER
02-SIS-005-R22.62, Siskiyou, CA
Built 1960 Load: 45.0 t ADT: 7,800
MASON ROAD
GoodOver: GREEN VALLEY CREEK
0.2 MI W GREEN VALLEY RD, Solano, CA
Built 1980 Load: 45.0 t ADT: 229
MOLLER AVENUE
GoodOver: MOLLER SLOUGH
WEST OF THIRD AVE, Tehama, CA
Built 1938 Load: 45.0 t ADT: 40
WEST VAN DUZEN RD
GoodOver: VAN DUZEN RIVER
8 MI N ZENIA-RUTH RD, Trinity, CA
Built 2013 Load: 45.0 t ADT: 578
STATE ROUTE 16
GoodOver: HEATHER CREEK
03-YOL-016-11.54, Yolo, CA
Built 1962 Load: 45.0 t ADT: 1,100
INTERSTATE 405
GoodOver: CONSTITUTION AVE
07-LA-405-31.90, Los Angeles, CA
Built 1957 Load: 45.3 t ADT: 283,000
STATE ROUTE 32
GoodOver: LINDO CHANNEL
03-BUT-032-6.36, Butte, CA
Built 1967 Load: 45.4 t ADT: 17,400
STATE ROUTE 32
GoodOver: MUD CREEK
03-BUT-032-4.38, Butte, CA
Built 1963 Load: 45.4 t ADT: 13,000
INTERSTATE 5 NB
GoodOver: KERN RIV FLOOD CANAL RD
06-KER-005-71.56, Kern, CA
Built 1967 Load: 45.4 t ADT: 16,000
ROUTE 10 EB
GoodOver: ALHAMBRA WASH
07-LA-010-25.50-RSMD, Los Angeles, CA
Built 1953 Load: 45.4 t ADT: 106,250
S405-N&S101 CONN
GoodOver: LOS ANGELES RIVER
07-LA-405-39.65-LA, Los Angeles, CA
Built 1958 Load: 45.4 t ADT: 42,500
STATE ROUTE 14
GoodOver: SANTA CLARA RIVER
07-LA-014-R31.88, Los Angeles, CA
Built 1972 Load: 45.4 t ADT: 113,000
FORT TEJON RD
GoodOver: UNNAMED WASH
2.0MI W/O PALLET CRK RD, Los Angeles, CA
Built 1953 Load: 45.4 t ADT: 918
Hilldale Ave
GoodOver: San Luis Canal
1.1 MI N OF SR 152, Merced, CA
Built 1968 Load: 45.4 t ADT: 50
SANTA FE DRIVE
GoodOver: BLACK RASCAL CREEK
0.28 MI NW OF SR 59, Merced, CA
Built 1953 Load: 45.4 t ADT: 10,016
COTTONWOOD RD
GoodOver: OUTSIDE CANAL
0.1 MI W OF WHITWORTH, Merced, CA
Built 1970 Load: 45.4 t ADT: 340
STATE ROUTE 182
GoodOver: EAST WALKER RIVER
09-MNO-182-R6.20, Mono, CA
Built 1996 Load: 45.4 t ADT: 2,200
INTERSTATE 15 SB
GoodOver: BIRD DITCH
08-SBD-015-R115.36, San Bernardino, CA
Built 1964 Load: 45.4 t ADT: 22,000
INTERSTATE 15 NB
GoodOver: BIRD DITCH
08-SBD-015-R115.36, San Bernardino, CA
Built 1964 Load: 45.4 t ADT: 22,000
STATE ROUTE 18
GoodOver: HILLSIDE
08-SBD-018-R17.54, San Bernardino, CA
Built 1965 Load: 45.4 t ADT: 16,800
CEDAR AVE
GoodOver: UP RR & AMTRAK
0.1 MI S OF I-10, San Bernardino, CA
Built 1966 Load: 45.4 t ADT: 27,730
ALPINE RD
GoodOver: CALAVERAS RIVER
0.2 MI S FOPPIANO LN, San Joaquin, CA
Built 1977 Load: 45.4 t ADT: 706
MISSION ST
GoodOver: MISSION CREEK
WEST OF CASTILLO ST, Santa Barbara, CA
Built 1963 Load: 45.4 t ADT: 18,600
ALAMAR AVE
GoodOver: MISSION CREEK
SOUTH OF STATE ST, Santa Barbara, CA
Built 1930 Load: 45.4 t ADT: 6,200
S85-N17 CONNECTOR
GoodOver: OKA ROAD
04-SCL-085-R10.60-LGTS, Santa Clara, CA
Built 1994 Load: 45.4 t ADT: 5,900
GEYSERS RD
GoodOver: LITTLE SULPHUR CREEK
8.5 MI N OF SH 128, Sonoma, CA
Built 1983 Load: 45.4 t ADT: 500
STATE ROUTE 49
GoodOver: JACKASS GULCH
10-TUO-049-R2.99, Tuolumne, CA
Built 1975 Load: 45.4 t ADT: 765
OLD WARDS FERRY RD
GoodOver: SULLIVAN CREEK
0.8 MI S HWY 108, Tuolumne, CA
Built 1977 Load: 45.4 t ADT: 810
INTERSTATE 80 WB
GoodOver: UP RR, BNSF RY, & AMTRAK
03-YOL-080-R10.62-WSAC, Yolo, CA
Built 1970 Load: 45.4 t ADT: 42,500
ORD FERRY RD
GoodOver: PERKINS CREEK
1.8 MI E GLENN CO LINE, Butte, CA
Built 1976 Load: 45.7 t ADT: 1,364
ROAD SS
GoodOver: ORTIZ DRAIN
0.8 MI S OF RD #61, Glenn, CA
Built 1950 Load: 45.7 t ADT: 13
INTERSTATE 710
GoodOver: LA JUNCTION RY
07-LA-710-21.80-BELL, Los Angeles, CA
Built 1957 Load: 45.7 t ADT: 207,000
W10-VENICE 187 OFF
GoodOver: BALLONA CREEK
07-LA-010-R9.15-LA, Los Angeles, CA
Built 1964 Load: 45.7 t ADT: 18,910
E210-W118 CONNECTR
GoodOver: FOOTHILL BLVD
07-LA-210-R5.96-LA, Los Angeles, CA
Built 1975 Load: 45.7 t ADT: 18,800
GRAND AVE
GoodOver: WALNUT CRK
0.2MI N/O I-10, Los Angeles, CA
Built 1961 Load: 45.7 t ADT: 40,931
Showing 25,101-25,150 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |