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
PRODUCE AVE
FairOver: COLMA CREEK
S/O SAN MATEO AVE, San Mateo, CA
Built 1977 Load: 40.8 t ADT: 22,510
FOSTER CITY BLVD
FairOver: FOSTER CITY LAGOON
EAST OF BOUNTY DR, San Mateo, CA
Built 1966 Load: 40.8 t ADT: 5,042
FOSTER CITY BLVD
FairOver: FOSTER CITY LAGOON
EAST OF BOUNTY DRIVE, San Mateo, CA
Built 1966 Load: 40.8 t ADT: 5,005
SHELL BLVD
FairOver: FOSTER CITY LAGOON
.3 MI N/O BEACH PARK ROAD, San Mateo, CA
Built 1966 Load: 40.8 t ADT: 2,103
SHELL BLVD
FairOver: FOSTER CITY LAGOON
.3 MI N/O BEACH PARK ROAD, San Mateo, CA
Built 1966 Load: 40.8 t ADT: 2,126
ALUM ROCK AVE
FairOver: MIGUELITA CREEK
0.1 MI N/O MT HAMILTON RD, Santa Clara, CA
Built 1920 Load: 40.8 t ADT: 740
ASH CREEK ROAD
FairOver: SACRAMENTO RIV OVERFLOW
0.9 MI E BALLS FERRY RD, Shasta, CA
Built 1977 Load: 40.8 t ADT: 850
PAIGE BAR ROAD
FairOver: PAIGE BOULDER CREEK
1.5 miles SW of Hwy 299 (, Shasta, CA
Built 1998 Load: 40.8 t ADT: 10
SUMMERHOME PARK RD
FairOver: HILLSIDE
0.95 MI SW RIVER RD, Sonoma, CA
Built 1960 Load: 40.8 t ADT: 101
INTERSTATE 5 SB
FairOver: KHALSA ROAD
10-STA-005-25.53, Stanislaus, CA
Built 1967 Load: 40.8 t ADT: 20,500
INTERSTATE 5 NB
FairOver: KHALSA ROAD
10-STA-005-25.53, Stanislaus, CA
Built 1967 Load: 40.8 t ADT: 20,500
OAKDALE-WATRFD HWY
FairOver: M.I.D. MAIN CANAL
0.9 MI NW SR 132, Stanislaus, CA
Built 1920 Load: 40.8 t ADT: 6,302
HALL ROAD
FairOver: EAST BURCH CREEK
0.1 MI N CAPAY ROAD, Tehama, CA
Built 1940 Load: 40.8 t ADT: 231
RICHGROVE DRIVE
FairOver: WHITE RIVER
1.8 MI S OF AVE 56, Tulare, CA
Built 1931 Load: 40.8 t ADT: 425
GENERALS HIGHWAY (
FairOver: MARBLE FORK KAWEAH RIVER
21.6 MI. NORTH OF ASH MOU, Tulare, CA
Built 1930 Load: 40.8 t ADT: 662
STATE ROUTE 84
FairOver: ALAMEDA CR,UPRR,BNSF,ACE
04-ALA-084-14.32, Alameda, CA
Built 1947 Load: 41.1 t ADT: 13,500
INTERSTATE 5
FairOver: FRESHWATER CREEK
03-COL-005-R19.66, Colusa, CA
Built 1971 Load: 41.1 t ADT: 15,000
INTERSTATE 5
FairOver: FRESHWATER CREEK
03-COL-005-R19.66, Colusa, CA
Built 1971 Load: 41.1 t ADT: 15,000
DELPHOS RD
FairOver: FRESHWATER CREEK
0.4 MI N/O FRESHWATER RD, Colusa, CA
Built 1971 Load: 41.1 t ADT: 29
LOS GATOS ROAD
FairOver: LOS GATOS CREEK
13.16 MI NW OF DERRICK BL, Fresno, CA
Built 1948 Load: 41.1 t ADT: 200
STATE ROUTE 162
FairOver: SACRAMENTO RIVER OVFL
03-GLE-162-79.55, Glenn, CA
Built 1968 Load: 41.1 t ADT: 2,400
SPRUCE GROVE ROAD
FairOver: COPSEY CREEK
0.3 MI EAST OF SR 29, Lake, CA
Built 1995 Load: 41.1 t ADT: 512
U.S. HIGHWAY 395
FairOver: LONG VALLEY CREEK OVFL
02-LAS-395-R21.34, Lassen, CA
Built 1969 Load: 41.1 t ADT: 5,500
INTERSTATE 5
FairOver: RIO HONDO
07-LA-005-9.47-DNY, Los Angeles, CA
Built 1953 Load: 41.1 t ADT: 233,000
47TH STREET E
FairOver: CALIFORNIA AQUEDUCT
0.8MI S/O SR-138 HWY, Los Angeles, CA
Built 1968 Load: 41.1 t ADT: 1,012
FIRESTONE BLVD
FairOver: ACTA
40FT E/O ALAMEDA ST, Los Angeles, CA
Built 2000 Load: 41.1 t ADT: 27,945
74TH ST
FairOver: ACTA
50FT E/O ALAMEDA ST, Los Angeles, CA
Built 2007 Load: 41.1 t ADT: 909
STATE ROUTE 1
FairOver: BIG RIVER
01-MEN-001-50.17, Mendocino, CA
Built 1961 Load: 41.1 t ADT: 6,300
STATE ROUTE 152 WB
FairOver: CALIFORNIA AQUEDUCT
10-MER-152-14.17, Merced, CA
Built 1965 Load: 41.1 t ADT: 12,425
STATE ROUTE 152 EB
FairOver: CALIFORNIA AQUEDUCT
10-MER-152-14.17, Merced, CA
Built 1965 Load: 41.1 t ADT: 12,425
U.S. HIGHWAY 395
FairOver: UP RR
02-MOD-395-R20.77, Modoc, CA
Built 1971 Load: 41.1 t ADT: 2,400
PLEASANT VALLEY RD
FairOver: SOUTH YUBA RIVER
10 MI NORTH OF ROUTE 20, Nevada, CA
Built 1973 Load: 41.1 t ADT: 529
STAMPFLI LANE
FairOver: INDIAN CREEK
2.9 MI E SR 89, Plumas, CA
Built 1965 Load: 41.1 t ADT: 400
RICH GULCH RD
FairOver: RUSH CREEK
0.4 MI N OF SR 70, Plumas, CA
Built 1955 Load: 41.1 t ADT: 30
ROUTE 91
FairOver: JEFFERSON STREET
08-RIV-091-16.14-RIV, Riverside, CA
Built 1959 Load: 41.1 t ADT: 199,000
ROUTE 91
FairOver: MONROE STREET
08-RIV-091-15.10-RIV, Riverside, CA
Built 1959 Load: 41.1 t ADT: 203,000
INTERSTATE 15 SB
FairOver: MAYHEW WASH
08-RIV-015-31.97, Riverside, CA
Built 1979 Load: 41.1 t ADT: 60,500
INTERSTATE 15 SB
FairOver: VICTORIA STREET
08-SBD-015-7.44-RCUC, San Bernardino, CA
Built 1976 Load: 41.1 t ADT: 80,000
OLD HIGHWAY 58
FairOver: CROW DITCH
0.2 MI W/O SHADY LN, San Bernardino, CA
Built 1992 Load: 41.1 t ADT: 4,000
INTERSTATE 5
FairOver: DAMON AVE
11-SD-005-R23.70-SD, San Diego, CA
Built 1954 Load: 41.1 t ADT: 143,000
SBND INTERSTATE 5
FairOver: LOS PENASQUITOS CREEK
11-SD-005-R30.65L-SD, San Diego, CA
Built 1966 Load: 41.1 t ADT: 74,000
INTERSTATE 5 SB
FairOver: TOM PAINE SLOUGH
10-SJ-005-R12.39, San Joaquin, CA
Built 1971 Load: 41.1 t ADT: 23,750
INTERSTATE 5 NB
FairOver: TOM PAINE SLOUGH
10-SJ-005-R12.39, San Joaquin, CA
Built 1971 Load: 41.1 t ADT: 23,750
NB US HIGHWAY 101
FairOver: RONAN DIVERSION CHANNEL
04-SCL-101-R6.56-GIL, Santa Clara, CA
Built 1973 Load: 41.1 t ADT: 26,000
CAPITOL EXPWY
FairOver: COYOTE CREEK
0.5 MI S/W OF US 101, Santa Clara, CA
Built 1964 Load: 41.1 t ADT: 42,680
STATE ROUTE 3
FairOver: EAST FORK SCOTT RIVER
02-SIS-003-6.90, Siskiyou, CA
Built 1968 Load: 41.1 t ADT: 190
PLEASANT GROVE RD
FairOver: NO NAME SLOUGH
0.2 MI N/O STRIPLIN RD, Sutter, CA
Built 1966 Load: 41.1 t ADT: 2,083
RD 196 (KAWEAH AV)
FairOver: ST JOHNS RIVER
4.0 MI N OF SR 198, Tulare, CA
Built 1921 Load: 41.1 t ADT: 4,300
ROAD 144(MCAULIFF)
FairOver: ST JOHNS RIVER
0.5 MI N OF SR 216, Tulare, CA
Built 1951 Load: 41.1 t ADT: 2,275
CAMANCHE ROAD
FairOver: JACKSON CREEK
0.2 MI S JACKSON VLY RD, Amador, CA
Built 1976 Load: 41.5 t ADT: 1,834
Showing 15,951-16,000 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.