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
N580-WEST ST OFF-R
UnknownOver: MARTIN LUTHER KING JR WY
04-ALA-580-45.25-OAK, Alameda, CA
Built 1961 ADT: 36,028
ROUTE 580
UnknownOver: WEST STREET
04-ALA-580-45.39-OAK, Alameda, CA
Built 1961 ADT: 7,000
INTERSTATE 580
UnknownOver: MARKET STREET
04-ALA-580-45.56-OAK, Alameda, CA
Built 1961 ADT: 15,000
E&W580-E24 CONNCTR
UnknownOver: I580,SR24,BARTD,CONN,ST
04-ALA-580-45.23-OAK, Alameda, CA
Built 1970 ADT: 5,000
E&W580-W980 CNNCTR
UnknownOver: I580,980,BARTD,CONNS,STS
04-ALA-580-45.14-OAK, Alameda, CA
Built 1970 ADT: 107,500
E980-580 CONNECTOR
UnknownOver: I 980 & I 580 & STS
04-ALA-980-1.98-OAK, Alameda, CA
Built 1970 ADT: 5,000
W24-E&W580 CONNCTR
UnknownOver: I 580,SR 24,MACARTHUR,
04-ALA-024-R1.88-OAK, Alameda, CA
Built 1970 ADT: 205,000
ARDLEY AVE
UnknownOver: INTERSTATE 580
04-ALA-580-R41.93-OAK, Alameda, CA
Built 1963 ADT: 175,000
BRUCE ST-S580 ON R
UnknownOver: 14TH AVENUE
04-ALA-580-R42.07-OAK, Alameda, CA
Built 1963 ADT: 2,500
INTERSTATE 580
UnknownOver: 14TH AVENUE
04-ALA-580-R42.07-OAK, Alameda, CA
Built 1963 ADT: 2,500
INTERSTATE 580 EB
UnknownOver: BEAUMONT AVE
04-ALA-580-R42.18-OAK, Alameda, CA
Built 1963 ADT: 5,500
INTERSTATE 580 WB
UnknownOver: BEAUMONT AVE
04-ALA-580-R42.18-OAK, Alameda, CA
Built 1963 ADT: 5,500
13TH AVENUE
UnknownOver: INTERSTATE 580
04-ALA-580-R42.37-OAK, Alameda, CA
Built 1963 ADT: 164,000
PEDESTRIAN WALKWAY
UnknownOver: I 580 WB ON & OFF
04-ALA-580-43.76-OAK, Alameda, CA
Built 1962 ADT: 19,200
PEDESTRIAN WALKWAY
UnknownOver: INTERSTATE 580 & RAMPS
04-ALA-580-43.75-OAK, Alameda, CA
Built 1962 ADT: 4,000
LAKE PARK AVE
UnknownOver: INTERSTATE 580
04-ALA-580-43.23-OAK, Alameda, CA
Built 1962 ADT: 190,000
INTERSTATE 580
UnknownOver: PARK BLVD
04-ALA-580-42.67-OAK, Alameda, CA
Built 1962 ADT: 22,979
INTERSTATE 580
UnknownOver: PARK BLVD
04-ALA-580-42.67-OAK, Alameda, CA
Built 1962 ADT: 22,979
INTERSTATE 580
UnknownOver: MACARTHUR BLVD
04-ALA-580-R39.77-OAK, Alameda, CA
Built 1965 ADT: 5,200
INTERSTATE 580
UnknownOver: MACARTHUR BLVD
04-ALA-580-R39.91-OAK, Alameda, CA
Built 1964 ADT: 3,500
INTERSTATE 580
UnknownOver: HIGH STREET
04-ALA-580-R40.08-OAK, Alameda, CA
Built 1963 ADT: 3,500
38TH AVE
UnknownOver: INTERSTATE 580
04-ALA-580-R40.39-OAK, Alameda, CA
Built 1963 ADT: 274,000
35TH AVE
UnknownOver: INTERSTATE 580
04-ALA-580-R40.65-OAK, Alameda, CA
Built 1963 ADT: 274,000
INTERSTATE 580
UnknownOver: COOLIDGE AVE
04-ALA-580-R41.14-OAK, Alameda, CA
Built 1963 ADT: 3,500
BOSTON AVE
UnknownOver: INTERSTATE 580
04-ALA-580-R41.33-OAK, Alameda, CA
Built 1963 ADT: 169,000
INTERSTATE 580
UnknownOver: FRUITVALE AVE
04-ALA-580-R41.43-OAK, Alameda, CA
Built 1963 ADT: 5,300
SHEFFIELD AVE
UnknownOver: INTERSTATE 580
04-ALA-580-R41.75-OAK, Alameda, CA
Built 1963 ADT: 175,000
MACARTHUR BLVD NB
UnknownOver: E580-MACARTHUR BL OFF-RP
04-ALA-580-42.80-OAK, Alameda, CA
Built 1962 ADT: 13,900
PEDESTRIAN WALKWAY
UnknownOver: INTERSTATE 580
04-ALA-580-R39.93-OAK, Alameda, CA
Built 1964 ADT: 134,000
EAST 12TH STREET
UnknownOver: STATE ROUTE 77
04-ALA-077-0.37-OAK, Alameda, CA
Built 1962 ADT: 15,800
GRAND AVENUE
UnknownOver: INTERSTATE 580
04-ALA-580-R33.94-SLN, Alameda, CA
Built 1964 ADT: 144,000
INTERSTATE 580
UnknownOver: W580-SAN JOAQUIN AV OFF
04-ALA-580-R34.40-SLN, Alameda, CA
Built 1964 ADT: 13,000
ROUTE 580
UnknownOver: ESTUDILLO AVENUE
04-ALA-580-R34.48-SLN, Alameda, CA
Built 1964 ADT: 5,500
INTERSTATE 580
UnknownOver: DUTTON AVE
04-ALA-580-R34.81-SLN, Alameda, CA
Built 1964 ADT: 4,000
INTERSTATE 580
UnknownOver: FTHLL BLVD UC (OFF-RAMP)
04-ALA-580-R35.10-OAK, Alameda, CA
Built 1964 ADT: 2,000
150TH AVE
UnknownOver: INTERSTATE 580
04-ALA-580-R32.84, Alameda, CA
Built 1965 ADT: 128,000
FAIRMONT DRIVE
UnknownOver: INTERSTATE 580
04-ALA-580-R32.72, Alameda, CA
Built 1965 ADT: 158,000
159TH AVE
UnknownOver: INTERSTATE 580
04-ALA-580-R32.32, Alameda, CA
Built 1965 ADT: 128,000
FONTAINE ST
UnknownOver: INTERSTATE 580
04-ALA-580-R37.34-OAK, Alameda, CA
Built 1965 ADT: 153,000
KELLER AVE
UnknownOver: INTERSTATE 580
04-ALA-580-R37.80-OAK, Alameda, CA
Built 1965 ADT: 157,000
INTERSTATE 580
UnknownOver: EDWARDS AVE
04-ALA-580-R38.31-OAK, Alameda, CA
Built 1965 ADT: 3,300
S13-E580 CONNECTOR
UnknownOver: I 580 & CALAVERAS AVE
04-ALA-013-4.27-OAK, Alameda, CA
Built 1965 ADT: 6,000
INTERSTATE 580 WB
UnknownOver: INTERSTATE 205
04-ALA-580-0.39R, Alameda, CA
Built 1966 ADT: 122,000
MOUNTAIN-580 ON RP
UnknownOver: SR 13 NB, MOUNTAIN BL
04-ALA-580-R39.15-OAK, Alameda, CA
Built 1965 ADT: 10,000
STATE ROUTE 13 NB
UnknownOver: CALAVERAS AVE
04-ALA-013-4.32-OAK, Alameda, CA
Built 1965 ADT: 6,000
RAMP/CONNECTOR 580
UnknownOver: 30TH STREET
04-ALA-580-45.22-OAK, Alameda, CA
Built 1969 ADT: 800
INTERSTATE 680
UnknownOver: SR 84 (CALAVERAS ROAD)
04-ALA-680-R11.03, Alameda, CA
Built 1963 ADT: 25,050
INTERSTATE 680
UnknownOver: STATE ROUTE 84 SB & OFF
04-ALA-680-R11.81, Alameda, CA
Built 1967 ADT: 25,500
OAK KNOLL BLVD
UnknownOver: INTERSTATE 580
04-ALA-580-R36.76-OAK, Alameda, CA
Built 1965 ADT: 153,000
INTERSTATE 580
UnknownOver: GOLF LINKS ROAD
04-ALA-580-R36.34-OAK, Alameda, CA
Built 1965 ADT: 1,500
Showing 101-150 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 |