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
UP RR & BNSF RY
UnknownOver: LOWER SACRAMENTO ROAD
0.4 MI S/O COLLIER RD, San Joaquin, CA
Built 1925 ADT: 4,526
EL DORADO ST
UnknownOver: BIANCHI ROAD
OVER BIANCHI RD, San Joaquin, CA
Built 1962 ADT: 10,400
BNSF,WORTH,SCOTTS
UnknownOver: WILSON WAY
0.2 MI S OF HAZELTON AVE, San Joaquin, CA
Built 1937 ADT: 22,900
UP RR & BNSF RY
UnknownOver: HARDING WAY
0.5 MI E CALIFORNIA ST, San Joaquin, CA
Built 1963 ADT: 10,000
UP RR, BNSF,AMTRAK
UnknownOver: MINER AVENUE
0.1 MI E OF AURORA ST, San Joaquin, CA
Built 1980 ADT: 4,500
ABANDONED RR ROW
UnknownOver: MINER AVENUE
0.2 MI E AURORA ST, San Joaquin, CA
Built 1980 ADT: 4,500
UNION STREET
UnknownOver: MINER AVENUE
AT MINER AVE, San Joaquin, CA
Built 1980 ADT: 4,500
EL DORADO STREET
UnknownOver: BNSF,AMTRAK,HAZELTON,ETC
SOUTH OF CHURCH ST, San Joaquin, CA
Built 1959 ADT: 12,200
CENTER STREET
UnknownOver: BNSF,AMTRAK,HAZELTON,ETC
SOUTH OF CHURCH ST, San Joaquin, CA
Built 1959 ADT: 14,900
MARIPOSA ROAD OH
UnknownOver: AUSTIN ROAD & BNSF RY
1 MILE WEST OF KAISER RD, San Joaquin, CA
Built 2002 ADT: 900
UP RR, BNSF RY
UnknownOver: MARTIN LUTHER KING JR BL
0.2 MI WEST OF AIRPORT WY, San Joaquin, CA
Built 1937 ADT: 27,700
UP RR, BNSF,AMTRAK
UnknownOver: MARTIN LUTHER KING JR BL
0.1 MI W N AIRPORT WAY, San Joaquin, CA
Built 1937 ADT: 27,700
BNSF RY & AMTRAK
UnknownOver: DR MLK JR BLVD
SOUTH OF ANDERSON STREET, San Joaquin, CA
Built 1949 ADT: 12,500
UP RAILROAD TRACKS
UnknownOver: LOWER SACRAMENTO ROAD
SOUTH OF 8 MILE ROAD, San Joaquin, CA
Built 2013 ADT: 15,100
ARCH AIRPORT ROAD
UnknownOver: EL DORADO STREET
0.46 MI EAST OF ROUTE 5, San Joaquin, CA
Built 2013 ADT: 6,200
ARCH AIRPORT ROAD
UnknownOver: MCKINLEY, UPRR, PANATONI
0.81 MI EAST OF ROUTE 5, San Joaquin, CA
Built 2013 ADT: 4,300
UP RAILROAD TRACKS
UnknownOver: MARCH LANE
WEST OF WEST LANE, San Joaquin, CA
Built 2003 ADT: 28,500
UP RAILROAD TRACKS
UnknownOver: MARCH LANE
EAST OF WEST LANE, San Joaquin, CA
Built 2003 ADT: 35,200
UP RAILROAD TRACKS
UnknownOver: EAST HAMMER LANE
WEST OF WEST LANE, San Joaquin, CA
Built 2001 ADT: 47,000
UP RAILROAD TRACKS
UnknownOver: EAST HAMMER LANE
EAST OF WEST LANE, San Joaquin, CA
Built 2001 ADT: 40,900
BNSF RR MAINLINE
UnknownOver: NAVY DRIVE
0.6 MI S OF W WASHINGTON, San Joaquin, CA
Built 2018 ADT: 26,600
BNSF RR SHOOFLY
UnknownOver: NAVY DRIVE
0.6 MI S OF W WASHINGTON, San Joaquin, CA
Built 2018 ADT: 26,600
US HIGHWAY 101 SB
UnknownOver: MARSH STREET
05-SLO-101-28.07-SLO, San Luis Obispo, CA
Built 1953 ADT: 10,994
US HIGHWAY 101 NB
UnknownOver: MARSH STREET
05-SLO-101-28.07-SLO, San Luis Obispo, CA
Built 1953 ADT: 10,994
US HIGHWAY 101 SB
UnknownOver: PISMO CR, N101-PRICE OFF
05-SLO-101-16.40-PBCH, San Luis Obispo, CA
Built 1960 ADT: 5,900
US HIGHWAY 101 NB
UnknownOver: PISMO CR, N101-PRICE OFF
05-SLO-101-16.40-PBCH, San Luis Obispo, CA
Built 1960 ADT: 5,900
US HIGHWAY 101 SB
UnknownOver: UP RR, AMTRAK, FRADY LN,
05-SLO-101-16.17-PBCH, San Luis Obispo, CA
Built 1956 ADT: 1,000
US HIGHWAY 101 NB
UnknownOver: UP RR, AMTRAK, FRADY LN,
05-SLO-101-16.17-PBCH, San Luis Obispo, CA
Built 1956 ADT: 1,000
UP RR & AMTRAK
UnknownOver: STATE ROUTE 1
05-SLO-001-1.29, San Luis Obispo, CA
Built 1957 ADT: 5,000
US HIGHWAY 101 SB
UnknownOver: CHORRO STREET
05-SLO-101-28.81-SLO, San Luis Obispo, CA
Built 1953 ADT: 2,530
US HIGHWAY 101 NB
UnknownOver: CHORRO STREET
05-SLO-101-28.81-SLO, San Luis Obispo, CA
Built 1953 ADT: 253
CALIFORNIA BLVD
UnknownOver: US HIGHWAY 101
05-SLO-101-29.40-SLO, San Luis Obispo, CA
Built 1954 ADT: 62,000
US HIGHWAY 101 SB
UnknownOver: GRAND AVE
05-SLO-101-29.77-SLO, San Luis Obispo, CA
Built 1953 ADT: 4,178
US HIGHWAY 101 NB
UnknownOver: GRAND AVE
05-SLO-101-29.77-SLO, San Luis Obispo, CA
Built 1953 ADT: 4,178
BUENA VISTA AVE
UnknownOver: US HIGHWAY 101
05-SLO-101-29.99-SLO, San Luis Obispo, CA
Built 1953 ADT: 43,000
MORRO BAY BLVD
UnknownOver: STATE ROUTE 1
05-SLO-001-28.82-MOBY, San Luis Obispo, CA
Built 1962 ADT: 24,000
STATE ROUTE 1
UnknownOver: MAIN STREET
05-SLO-001-29.62-MOBY, San Luis Obispo, CA
Built 1962 ADT: 1,000
US HIGHWAY 101 SB
UnknownOver: S HIGUERA ST
05-SLO-101-R24.30, San Luis Obispo, CA
Built 1963 ADT: 7,599
US HIGHWAY 101 NB
UnknownOver: S HIGUERA ST
05-SLO-101-R24.30, San Luis Obispo, CA
Built 1963 ADT: 7,599
US HIGHWAY 101 SB
UnknownOver: ST RTE 166 (@PM 8.93)
05-SLO-101-0.80, San Luis Obispo, CA
Built 1962 ADT: 3,200
US HIGHWAY 101 NB
UnknownOver: ST RTE 166 (@PM 8.93)
05-SLO-101-0.80, San Luis Obispo, CA
Built 1962 ADT: 3,200
HINDS AVE
UnknownOver: US HIGHWAY 101
05-SLO-101-16.62-PBCH, San Luis Obispo, CA
Built 1960 ADT: 56,000
SAN ANSELMO RD
UnknownOver: US HIGHWAY 101
05-SLO-101-46.87-ATAS, San Luis Obispo, CA
Built 1966 ADT: 58,000
DEL RIO ROAD
UnknownOver: US HIGHWAY 101
05-SLO-101-48.33, San Luis Obispo, CA
Built 1967 ADT: 58,000
STATE ROUTE 1
UnknownOver: US HWY 101 (@PM 29.07)
05-SLO-001-16.77-SLO, San Luis Obispo, CA
Built 1953 ADT: 62,000
13TH ST
UnknownOver: US HIGHWAY 101
05-SLO-101-56.88-PSRS, San Luis Obispo, CA
Built 1958 ADT: 30,000
UP RR & AMTRAK
UnknownOver: US HIGHWAY 101
05-SLO-101-29.38-SLO, San Luis Obispo, CA
Built 1953 ADT: 62,000
US HIGHWAY 101 SB
UnknownOver: UP RR,AMTRAK,N101-SPRING
05-SLO-101-55.72-PSRS, San Luis Obispo, CA
Built 1958 ADT: 6,000
US HIGHWAY 101 NB
UnknownOver: UP RR, HWY 101 N OFFRAMP
05-SLO-101-55.67-PSRS, San Luis Obispo, CA
Built 1958 ADT: 6,500
US HIGHWAY 101 SB
UnknownOver: TRAFFIC WAY
05-SLO-101-45.96-ATAS, San Luis Obispo, CA
Built 1956 ADT: 8,000
Showing 6,151-6,200 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.