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
STATE ROUTE 99 SB
FairOver: LITTLE CHICO CREEK
03-BUT-099-R32.20-CHC, Butte, CA
Built 1965 Load: 41.5 t ADT: 24,750
N WISHON AVE
FairOver: HERNDON CANAL
SOUTH OF LANSING WAY, Fresno, CA
Built 1988 Load: 41.5 t ADT: 800
STATE ROUTE 36
FairOver: VAN DUZEN RIVER
01-HUM-036-20.21, Humboldt, CA
Built 1965 Load: 41.5 t ADT: 1,200
STATE ROUTE 299
FairOver: MAINT RD
01-HUM-299-R5.29, Humboldt, CA
Built 1965 Load: 41.5 t ADT: 9,700
ARROW HWY
FairOver: SAN DIMAS WASH
0.3MI W/O I-10 FWY, Los Angeles, CA
Built 1959 Load: 41.5 t ADT: 26,036
TOPANGA SCHOOL RD
FairOver: GARAPITO CRK
25FT W/O TOPANGA CYN BLVD, Los Angeles, CA
Built 1953 Load: 41.5 t ADT: 765
PLATT AVE
FairOver: BELL CREEK(S FORK)
0.1 M SOUTH VICTORY BLVD, Los Angeles, CA
Built 1959 Load: 41.5 t ADT: 21,850
SAN GABRIEL RIV PK
FairOver: SAN GABRIEL RIV
0.6MI N/O BEVERLY BLVD, Los Angeles, CA
Built 1954 Load: 41.5 t ADT: 11,088
BRAND BLVD
FairOver: VERDUGO WASH
0.3MI N/O US-101 FWY, Los Angeles, CA
Built 1986 Load: 41.5 t ADT: 23,760
AZUSA AVE
FairOver: SAN DIMAS CHAN
0.1MI N/O COVINA BLVD, Los Angeles, CA
Built 1959 Load: 41.5 t ADT: 35,490
GREENLEAF BLVD
FairOver: ACTA
25FT E/O ALAMEDA ST, Los Angeles, CA
Built 2000 Load: 41.5 t ADT: 13,843
IRR FRTBRG-SRWD RD
FairOver: RESERVATION CREEK
11 MI W/O US 101, Mendocino, CA
Built 1985 Load: 41.5 t ADT: 167
STATE ROUTE 29 SB
FairOver: SUSCOL CREEK
04-NAP-029-R6.08, Napa, CA
Built 1981 Load: 41.5 t ADT: 32,500
SR 241 NB
FairOver: OAK CANYON WILDLIFE
12-ORA-241-34.81-ANA, Orange, CA
Built 1998 Load: 41.5 t ADT: 20,500
INTERSTATE 40
FairOver: GAS LINE WASH
08-SBD-040-R15.41, San Bernardino, CA
Built 1968 Load: 41.5 t ADT: 19,500
INTERSTATE 40
FairOver: GAS LINE WASH
08-SBD-040-R15.41, San Bernardino, CA
Built 1968 Load: 41.5 t ADT: 19,500
INTERSTATE 40
FairOver: TWIN HILLS WASH
08-SBD-040-R15.92, San Bernardino, CA
Built 1968 Load: 41.5 t ADT: 19,500
INTERSTATE 40
FairOver: TWIN HILLS WASH
08-SBD-040-R15.92, San Bernardino, CA
Built 1968 Load: 41.5 t ADT: 19,500
RUCKER AVE
FairOver: LLAGAS CREEK
BTWN SH 101/NEW AVE, Santa Clara, CA
Built 1987 Load: 41.5 t ADT: 2,090
HARRY RD
FairOver: ARROYO CALERO CREEK
NEAR CAMDEN AVE, Santa Clara, CA
Built 1985 Load: 41.5 t ADT: 1,670
GIRARD RIDGE
FairOver: SACRAMENTO RIVER
NO DATA ENTERED, Shasta, CA
Built 1974 Load: 41.5 t ADT: 50
STATE ROUTE 96
FairOver: KLAMATH RIVER
02-SIS-096-R15.61, Siskiyou, CA
Built 1967 Load: 41.5 t ADT: 330
HAWKINSVLE HUMB RD
FairOver: HUMBUG CREEK
SOUTH HUMBUG CREEK RD, Siskiyou, CA
Built 1971 Load: 41.5 t ADT: 20
CROWSLANDING ROAD
FairOver: CCID MAIN CANAL
0.5 MI E SR33, @ARMSTRONG, Stanislaus, CA
Built 1953 Load: 41.5 t ADT: 3,337
STATE ROUTE 299
FairOver: TRINITY RIVER
02-TRI-299-R58.00, Trinity, CA
Built 1980 Load: 41.5 t ADT: 4,450
ROAD 112
FairOver: NORTH BRANCH TULE RIVER
0.25 MI N OF AVE 176, Tulare, CA
Built 1962 Load: 41.5 t ADT: 475
ROAD 180
FairOver: PACKWOOD CREEK
0.1 MI S OF AVE 312, Tulare, CA
Built 1954 Load: 41.5 t ADT: 550
WINDING ROAD
FairOver: TUOLUMNE RIVER
NO DATA ENTERED, Tuolumne, CA
Built 1975 Load: 41.5 t ADT: 50
TAPO CANYON RD
FairOver: ARROYO SIMI
0.1 MI S ROYAL AVE, Ventura, CA
Built 1982 Load: 41.5 t ADT: 1,500
INTERSTATE 405
FairOver: PLUMMER STREET
07-LA-405-45.24-LA, Los Angeles, CA
Built 1963 Load: 41.7 t ADT: 216,000
RIVERSIDE DR
FairOver: TUJUNGA WASH
RIVERSIDE DR/WHITSETT AV, Los Angeles, CA
Built 1950 Load: 41.7 t ADT: 16,918
TANGAIR ROAD
FairOver: UNION PACIFIC RAILROAD
FROM MAIN GATE: TAKE CALI, Santa Barbara, CA
Built 1959 Load: 41.7 t ADT: 300
CHARLOTTE WAY
FairOver: ARROYO SECO
0.3 MI N OF EAST AVE, Alameda, CA
Built 1968 Load: 41.8 t ADT: 3,450
BRUCE ST
FairOver: LITTLE CHICO CREEK
AT/SOUTH OF HUMBOLDT AVE, Butte, CA
Built 1961 Load: 41.8 t ADT: 1,058
STATE ROUTE 20
FairOver: COLUSA TROUGH
03-COL-020-27.83, Colusa, CA
Built 1962 Load: 41.8 t ADT: 6,400
N HOWARD AVE
FairOver: HERNDON CANAL
AT SHAW AVE, Fresno, CA
Built 1935 Load: 41.8 t ADT: 500
WILDER RIDGE ROAD
FairOver: BEARTRAP CREEK
1.5 MI S MATTOLE RD, Humboldt, CA
Built 1960 Load: 41.8 t ADT: 128
OLIVE AVENUE
FairOver: SOUTH TAFT CREEK
0.08 MI N CRYSTAL STREET, Kern, CA
Built 1963 Load: 41.8 t ADT: 510
ROSEDALE HWY
FairOver: KERN RIVER
0.2 MI EAST RTE 99, Kern, CA
Built 1963 Load: 41.8 t ADT: 26,000
STATE ROUTE 29
FairOver: LUPIYOMA CREEK
01-LAK-029-6.84, Lake, CA
Built 1955 Load: 41.8 t ADT: 10,900
S405-W90 CONNECTOR
FairOver: SLAUSON AVE
07-LA-405-26.10-CLC, Los Angeles, CA
Built 1968 Load: 41.8 t ADT: 6,200
SR 2
FairOver: ROUND TOP DR
07-LA-002-R17.78-LA, Los Angeles, CA
Built 1976 Load: 41.8 t ADT: 143,000
CITRUS AVE
FairOver: SAN DIMAS WASH
0.3MI S/O ARROW HWY, Los Angeles, CA
Built 1959 Load: 41.8 t ADT: 21,867
DEL AMO BLVD
FairOver: COMPTON CRK
0.3MI W/O I-710 FWY, Los Angeles, CA
Built 1954 Load: 41.8 t ADT: 38,658
HOLLENBECK AVE
FairOver: SAN DIMAS WASH
0.4MI S/O ARROW HWY, Los Angeles, CA
Built 1959 Load: 41.8 t ADT: 13,366
ORCHARD VILLAGE RD
FairOver: SANTA CLARA RIV SF
1.0MI N/O LYONS AVE, Los Angeles, CA
Built 1970 Load: 41.8 t ADT: 24,066
7TH ST ON RAMP
FairOver: RTD PARKING LOT UC
0.4MI W/O MAGNOLIA AVE, Los Angeles, CA
Built 1956 Load: 41.8 t ADT: 13,081
AGUA DULCE CYN RD
FairOver: AGUA DULCE CR
1.0MI S/O SR-14 FWY, Los Angeles, CA
Built 1954 Load: 41.8 t ADT: 189
LOST CYN RD
FairOver: SAND CYN WASH
150FT W/O SAND CYN, Los Angeles, CA
Built 1960 Load: 41.8 t ADT: 3,100
MAIN ST
FairOver: DOMINGUEZ CHAN
0.1MI N/O I-405 FWY, Los Angeles, CA
Built 1961 Load: 41.8 t ADT: 16,200
Showing 16,001-16,050 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.