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
STEELHEAD RD
FairOver: POWERS CREEK
2.5 MI E/O ALDERPOINT RD, Humboldt, CA
Built 2007 Load: 37.3 t ADT: 50
STATE ROUTE 46
FairOver: CALLOWAY CANAL
06-KER-046-54.89, Kern, CA
Built 1959 Load: 37.3 t ADT: 7,700
STATE ROUTE 178 WB
FairOver: UP RR & ESPEE STREET
06-KER-178-R2.09-BKD, Kern, CA
Built 1967 Load: 37.3 t ADT: 25,500
STATE ROUTE 14 SB
FairOver: CACHE CREEK
09-KER-014-20.18, Kern, CA
Built 2008 Load: 37.3 t ADT: 4,800
STATE ROUTE 14 NB
FairOver: CACHE CREEK
09-KER-014-20.18, Kern, CA
Built 2008 Load: 37.3 t ADT: 4,800
STANDARD STREET
FairOver: CALLOWAY CANAL
0.6 MI N GILMORE AVE, Kern, CA
Built 1963 Load: 37.3 t ADT: 5,600
SCOFIELD AVE
FairOver: POSO CREEK
2.4 MI S OF POND AVE, Kern, CA
Built 1968 Load: 37.3 t ADT: 1,000
ARGONAUT ROAD
FairOver: ADOBE CREEK
0.1 MI W THOMAS LANE, Lake, CA
Built 1966 Load: 37.3 t ADT: 206
U.S. HIGHWAY 101
FairOver: FRANKLIN AVENUE
07-LA-101-7.20-LA, Los Angeles, CA
Built 1953 Load: 37.3 t ADT: 20,000
STATE ROUTE 2
FairOver: METROLINK,UP RR,AMTRAK,
07-LA-002-15.81-LA, Los Angeles, CA
Built 1958 Load: 37.3 t ADT: 153,000
GAREY AVE
FairOver: THOMPSON CRK
0.3MI N/O FOOTHILL BLVD, Los Angeles, CA
Built 1965 Load: 37.3 t ADT: 16,100
MARGUERITA AVE
FairOver: UPRR
50FT S/O MISSION RD, Los Angeles, CA
Built 1979 Load: 37.3 t ADT: 3,300
N RIDGE ROUTE RD
FairOver: VIOLIN CRK
0.3MI S/O LAKE HUGHES RD, Los Angeles, CA
Built 1986 Load: 37.3 t ADT: 3,570
COPPER HILL DR
FairOver: SAN FRANCISQUITO CK
250FT W/O MCBEAN PKWY, Los Angeles, CA
Built 1999 Load: 37.3 t ADT: 26,326
US HIGHWAY 101 SB
FairOver: YORK CREEK
01-MEN-101-28.26, Mendocino, CA
Built 1962 Load: 37.3 t ADT: 12,300
US HIGHWAY 101 NB
FairOver: YORK CREEK
01-MEN-101-28.26, Mendocino, CA
Built 1962 Load: 37.3 t ADT: 12,300
STATE ROUTE 140
FairOver: CCID MAIN CANAL
10-MER-140-4.47, Merced, CA
Built 1954 Load: 37.3 t ADT: 5,650
STATE ROUTE 165
FairOver: SALT SLOUGH
10-MER-165-22.34, Merced, CA
Built 1959 Load: 37.3 t ADT: 5,100
ROSE GARDEN ROAD
FairOver: GARZAS CREEK
0.2 MI E ORCHARD ROAD, Merced, CA
Built 1988 Load: 37.3 t ADT: 20
SAN ANTONIO ROAD
FairOver: HARRIS CREEK
0.32 MI N INTERLAKE RD, Monterey, CA
Built 1969 Load: 37.3 t ADT: 350
NATIVIDAD ROAD
FairOver: GABILAN CREEK
0.9 MI S OLD STAGE ROAD, Monterey, CA
Built 1971 Load: 37.3 t ADT: 4,200
LOMA VISTA DR
FairOver: SODA CREEK
1.4 MI N SILVERADO TRAIL, Napa, CA
Built 1953 Load: 37.3 t ADT: 189
MARINE AVENUE
FairOver: BALBOA ISLAND CHANNEL
0.1 MI. S/O BAYSIDE DRIVE, Orange, CA
Built 1930 Load: 37.3 t ADT: 12,000
EL TORO ROAD
FairOver: BNSF RY,AMTRAK,METROLINK
0.3 MI. SW/O JERONIMO RD., Orange, CA
Built 1970 Load: 37.3 t ADT: 54,405
STATE ROUTE 89
FairOver: MIDDLE FORK FEATHER RIV
02-PLU-089-8.23, Plumas, CA
Built 1955 Load: 37.3 t ADT: 2,025
INTERSTATE 10 WB
FairOver: BULA DITCH
08-RIV-010-R98.78, Riverside, CA
Built 1967 Load: 37.3 t ADT: 23,000
INTERSTATE 10 EB
FairOver: BULA DITCH
08-RIV-010-R98.78, Riverside, CA
Built 1967 Load: 37.3 t ADT: 23,000
STATE ROUTE 111
FairOver: BEECH DITCH
08-RIV-111-2.54, Riverside, CA
Built 1951 Load: 37.3 t ADT: 1,650
OLD BANNING-IDYLLW
FairOver: SMITH CREEK
1.06 MI. S/O ROUTE 10 FWY, Riverside, CA
Built 1970 Load: 37.3 t ADT: 50
INTERSTATE 15 NB
FairOver: DALE DITCH
08-SBD-015-150.32, San Bernardino, CA
Built 1961 Load: 37.3 t ADT: 18,500
INTERSTATE 15 SB
FairOver: YERMO DITCH
08-SBD-015-R86.05, San Bernardino, CA
Built 1963 Load: 37.3 t ADT: 28,500
INTERSTATE 15 NB
FairOver: YERMO DITCH
08-SBD-015-R86.05, San Bernardino, CA
Built 1963 Load: 37.3 t ADT: 28,500
STATE ROUTE 18
FairOver: HILLSIDE
08-SBD-018-R12.15, San Bernardino, CA
Built 1966 Load: 37.3 t ADT: 16,800
NAT TRAILS HWY
FairOver: TALOFA DITCH
9.6MI E/O KELBAKER RD, San Bernardino, CA
Built 1961 Load: 37.3 t ADT: 502
SYCAMORE DRIVE
FairOver: LYTLE CREEK
0.1 MI W LYTLE CREEK RD, San Bernardino, CA
Built 1970 Load: 37.3 t ADT: 1,172
FOURTH ST
FairOver: TWIN WARM CREEK
0.25 MI E WATERMAN AVE, San Bernardino, CA
Built 1961 Load: 37.3 t ADT: 2,325
INTERSTATE 8 WB
FairOver: CARRIZO RD
11-SD-008-R73.95, San Diego, CA
Built 1967 Load: 37.3 t ADT: 7,350
INTERSTATE 5 NB
FairOver: BNSF RY & AMTRAK
10-SJ-005-25.78-STKN, San Joaquin, CA
Built 1972 Load: 37.3 t ADT: 43,750
MIRAMONTES ST
FairOver: ARROYO LEON CREEK
0.3 MI E OF MAIN ST, San Mateo, CA
Built 1986 Load: 37.3 t ADT: 310
PATTERSON AVENUE
FairOver: ATASCADERO CREEK
1.0 MI S HOLLISTER AVE, Santa Barbara, CA
Built 1967 Load: 37.3 t ADT: 2,711
SAND HILL RD
FairOver: SAN FRANCISQUITO CREEK
NEAR SEARSVILLE RD, Santa Clara, CA
Built 1955 Load: 37.3 t ADT: 22,000
STATE ROUTE 1
FairOver: WADDELL CREEK
05-SCR-001-36.30, Santa Cruz, CA
Built 1947 Load: 37.3 t ADT: 4,800
STATE ROUTE 299 EB
FairOver: HAWLEY ROAD
02-SHA-299-25.54, Shasta, CA
Built 1974 Load: 37.3 t ADT: 10,100
INTERSTATE 5
FairOver: DUNSMUIR AVE
02-SIS-005-0.69, Siskiyou, CA
Built 1960 Load: 37.3 t ADT: 18,000
INTERSTATE 5
FairOver: DUNSMUIR AVE
02-SIS-005-2.51-DMR, Siskiyou, CA
Built 1960 Load: 37.3 t ADT: 18,000
STATE ROUTE 3
FairOver: EAST FORK SCOTT RIVER
02-SIS-003-8.66, Siskiyou, CA
Built 1968 Load: 37.3 t ADT: 190
SAWYERS BAR RD
FairOver: NORTH RUSSIAN CREEK
4.7 MI N WHITES GULCH RD, Siskiyou, CA
Built 1968 Load: 37.3 t ADT: 105
ELK CREEK ROAD
FairOver: KLAMATH RIVER
0.3 MI S OF SH 96, Siskiyou, CA
Built 1953 Load: 37.3 t ADT: 1,392
STATE ROUTE 121
FairOver: SONOMA CREEK
04-SON-121-R7.30, Sonoma, CA
Built 1971 Load: 37.3 t ADT: 19,000
US HIGHWAY 101 SB
FairOver: WASHINGTON STREET CREEK
04-SON-101-4.77-PET, Sonoma, CA
Built 1955 Load: 37.3 t ADT: 43,000
Showing 15,501-15,550 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.