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 1
GoodOver: OLEMA CREEK
04-MRN-001-22.96, Marin, CA
Built 1928 Load: 35.6 t ADT: 2,500
INTERSTATE 580
GoodOver: SAN QUENTIN STREET
04-MRN-580-2.63-SRF, Marin, CA
Built 1957 Load: 35.6 t ADT: 67,000
SR 175 WB
GoodOver: HILLSIDE
01-MEN-175-8.50, Mendocino, CA
Built 1986 Load: 35.6 t ADT: 4,800
INTERSTATE 5 SB
GoodOver: ALLEN ROAD (DIRT ROAD)
10-MER-005-27.40, Merced, CA
Built 1967 Load: 35.6 t ADT: 17,500
INTERSTATE 5 NB
GoodOver: ALLEN ROAD
10-MER-005-27.40, Merced, CA
Built 1967 Load: 35.6 t ADT: 21,500
US HIGHWAY 101 SB
GoodOver: NACIMIENTO RIVER
05-MON-101-R2.43, Monterey, CA
Built 1965 Load: 35.6 t ADT: 8,100
CHIPPEWA AVENUE
GoodOver: CARBON CREEK CHANNEL
0.2 MI. N/O CRESCENT AVE., Orange, CA
Built 1960 Load: 35.6 t ADT: 2,500
Ponderosa Way
GoodOver: N. Fork American River
5.5 mi. SE of Weimar, Placer, CA
Built 2023 Load: 35.6 t ADT: 75
INTERSTATE 10 WB
GoodOver: EAGLE MOUNTAIN OH
08-RIV-010-R95.05, Riverside, CA
Built 1967 Load: 35.6 t ADT: 27,300
INTERSTATE 10 EB
GoodOver: EAGLE MOUNTAIN OH
08-RIV-010-R95.05, Riverside, CA
Built 1967 Load: 35.6 t ADT: 27,300
INTERSTATE 40
GoodOver: OCOTILLO WASH
08-SBD-040-148.87, San Bernardino, CA
Built 1967 Load: 35.6 t ADT: 7,450
NO DATA ENTERED
GoodOver: CRAB CREEK
NO DATA ENTERED, San Bernardino, CA
Built 2016 Load: 35.6 t ADT: 50
PINE BLVD
GoodOver: SCOVE CANYON CREEK
0.6 MI N/O LAUGUNA TRAIL, San Diego, CA
Built 1987 Load: 35.6 t ADT: 577
99 FRONTAGE RD W
GoodOver: BEAR CREEK
0.4 MI N OF 8 MILE RD, San Joaquin, CA
Built 1964 Load: 35.6 t ADT: 3,737
COPPEROPOLIS RD
GoodOver: NORTH BRANCH CHANNEL A
0.5 MI EAST OF DRAIS RD, San Joaquin, CA
Built 1965 Load: 35.6 t ADT: 1,088
STATE ROUTE 299
GoodOver: CHURN CREEK
02-SHA-299-25.71, Shasta, CA
Built 1965 Load: 35.6 t ADT: 6,250
LAKE BLVD
GoodOver: UP RR & AMTRAK
0.7 MI NW/O I-5, Shasta, CA
Built 1939 Load: 35.6 t ADT: 13,986
THOUSAND SPRING RD
GoodOver: BEAR CREEK
0.1 MI EAST ELDER RD, Shasta, CA
Built 1980 Load: 35.6 t ADT: 100
YREKA AGER RD
GoodOver: SHASTA RIVER
1.25 MI NE OF SR 3, Siskiyou, CA
Built 1969 Load: 35.6 t ADT: 536
LEDGEWOOD RD
GoodOver: LEDGEWOOD CREEK
0.3 MI E OF SUISUN VLLY R, Solano, CA
Built 1996 Load: 35.6 t ADT: 1,732
W MONTE VISTA
GoodOver: ALAMO CREEK
0.2 MI W ORCHARD AVE, Solano, CA
Built 1967 Load: 35.6 t ADT: 10,600
STATE ROUTE 116
GoodOver: AUSTIN CREEK
04-SON-116-4.93, Sonoma, CA
Built 1962 Load: 35.6 t ADT: 5,175
INTERSTATE 5 SB
GoodOver: SHIELLS RD (PRIVATE)
10-STA-005-3.99, Stanislaus, CA
Built 1967 Load: 35.6 t ADT: 17,500
INTERSTATE 5 NB
GoodOver: SHIELLS RD (PRIVATE)
10-STA-005-3.99, Stanislaus, CA
Built 1967 Load: 35.6 t ADT: 17,500
INTERSTATE 5 SB
GoodOver: CROW CREEK
10-STA-005-8.94, Stanislaus, CA
Built 1967 Load: 35.6 t ADT: 17,500
INTERSTATE 5 NB
GoodOver: CROW CREEK
10-STA-005-8.95, Stanislaus, CA
Built 1967 Load: 35.6 t ADT: 18,000
RAMP/CONNECTOR 5
GoodOver: OAT CREEK
02-TEH-005-R19.67, Tehama, CA
Built 1965 Load: 35.6 t ADT: 20,000
INTERSTATE 5 SB
GoodOver: SOUR GRASS CREEK
02-TEH-005-R2.27, Tehama, CA
Built 1966 Load: 35.6 t ADT: 12,300
INTERSTATE 5 NB
GoodOver: SOUR GRASS CREEK
02-TEH-005-R2.27, Tehama, CA
Built 1966 Load: 35.6 t ADT: 12,300
STATE ROUTE 120 EB
GoodOver: PRIVATE ACCESS ROAD
10-TUO-120-R5.98, Tuolumne, CA
Built 1976 Load: 35.6 t ADT: 6,100
US HIGHWAY 101 SB
GoodOver: FIGUEROA STREET
07-VEN-101-30.40-VEN, Ventura, CA
Built 1963 Load: 35.6 t ADT: 64,000
TIERRA REJADA RD
GoodOver: SYCAMORE CANYON CHANNEL
0.2 MI W OF MADERA RD, Ventura, CA
Built 1967 Load: 35.6 t ADT: 20,000
IRR BIA ROUTE 51
GoodOver: BLACK CANYON CREEK
3KM N OF SUTHERLAND DAM, San Diego, CA
Built 1999 Load: 35.9 t ADT: 30
STATE ROUTE 99
GoodOver: KEEFERS SLOUGH
03-BUT-099-39.69, Butte, CA
Built 1951 Load: 36.0 t ADT: 14,700
US HIGHWAY 101 NB
GoodOver: JACOBY CREEK
01-HUM-101-84.50-ARC, Humboldt, CA
Built 1955 Load: 36.0 t ADT: 18,125
IRR BIA RTE 159
GoodOver: SOUTH FORK BISHOP CREEK
WEST EDGE OF BISHOP, Inyo, CA
Built 1975 Load: 36.0 t ADT: 500
U.S. HIGHWAY 101
GoodOver: RADFORD AVE
07-LA-101-12.60-LA, Los Angeles, CA
Built 1959 Load: 36.0 t ADT: 175,000
W138-N5 & S5-E138
GoodOver: ZENOBIA ROAD
07-LA-138-0.14L, Los Angeles, CA
Built 1967 Load: 36.0 t ADT: 2,225
INTERSTATE 210
GoodOver: LOWELL AVE
07-LA-210-R15.62-GNDL, Los Angeles, CA
Built 1972 Load: 36.0 t ADT: 156,000
SR 2 EB
GoodOver: HILLSIDE
07-LA-002-28.43-PAS, Los Angeles, CA
Built 1995 Load: 36.0 t ADT: 3,700
PAXTON ST
GoodOver: LOPEZ CYN CHAN
0.3MI NE/O I-10 FWY, Los Angeles, CA
Built 1975 Load: 36.0 t ADT: 10,479
SAN PASQUAL ST
GoodOver: EATON WASH
0.5MI E/O SAN GABRIEL BL, Los Angeles, CA
Built 1958 Load: 36.0 t ADT: 2,140
GLENOAKS BLVD
GoodOver: VERDUGO WASH
0.3MI W/O VERDUGO RD, Los Angeles, CA
Built 1938 Load: 36.0 t ADT: 16,624
VERDUGO RD
GoodOver: SPARR BLVD DRN
0.1MI S/O CANADA BLVD, Los Angeles, CA
Built 1940 Load: 36.0 t ADT: 8,343
ALTURA AVE
GoodOver: PICKENS CYN CHAN
0.4MI W/O OCEAN V BLVD, Los Angeles, CA
Built 1936 Load: 36.0 t ADT: 758
MANHATTAN AVE
GoodOver: PICKENS CYN CHAN
0.1MI N/O ROSEMONT AVE, Los Angeles, CA
Built 1935 Load: 36.0 t ADT: 1,020
PIEDMONT AVE
GoodOver: PICKENS CYN CHAN
0.3MI E/O LA CRESCENTA AV, Los Angeles, CA
Built 1935 Load: 36.0 t ADT: 1,020
BLUFF RD
GoodOver: BLUFF RD OH UPRR
0.3MI S/O WHITTIER BLVD, Los Angeles, CA
Built 1989 Load: 36.0 t ADT: 8,177
US HIGHWAY 101
GoodOver: HAEHL CREEK
01-MEN-101-R43.84, Mendocino, CA
Built 2016 Load: 36.0 t ADT: 8,000
Kowolski Road
GoodOver: Clear Lake Dam spillway
40 mi SE of Klamath Falls, Modoc, CA
Built 1999 Load: 36.0 t ADT: 1
Showing 24,151-24,200 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 |