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 24
UnknownOver: EL NIDO RANCH RD
04-CC-024-R4.90-LFYT, Contra Costa, CA
Built 1957 ADT: 3,870
STATE ROUTE 580
UnknownOver: STENMARK DR SB ON-RAMP
04-CC-580-6.01-RCH, Contra Costa, CA
Built 1956 ADT: 3,000
INTERSTATE 80
UnknownOver: BNSF,SYCAMORE,WILLOW
04-CC-080-9.72-HER, Contra Costa, CA
Built 1998 ADT: 30,000
W4-W80 CONNECTOR
UnknownOver: BNSF, WILLOW, SYCAMORE
04-CC-004-0.01-HER, Contra Costa, CA
Built 1983 ADT: 1,200
APPIAN WAY SB
UnknownOver: INTERSTATE 80
04-CC-080-7.60-PIN, Contra Costa, CA
Built 1957 ADT: 190,000
INTERSTATE 80
UnknownOver: STATE ROUTE 4 & RAMPS
04-CC-080-10.02-HER, Contra Costa, CA
Built 1958 ADT: 16,000
CUMMINGS SKYWAY
UnknownOver: INTERSTATE 80
04-CC-080-12.75, Contra Costa, CA
Built 1958 ADT: 115,000
INTERSTATE 80
UnknownOver: WILLOW AVENUE
04-CC-080-10.69-HER, Contra Costa, CA
Built 1958 ADT: 19,200
E80-WILLOW AVENUE
UnknownOver: WILLOW AVENUE
04-CC-080-10.69-HER, Contra Costa, CA
Built 2010 ADT: 19,200
PEDESTRIAN WALKWAY
UnknownOver: INTERSTATE 80
04-CC-080-0.50-RCH, Contra Costa, CA
Built 1996 ADT: 179,000
INTERSTATE 680
UnknownOver: NEWELL AVENUE
04-CC-680-13.67-WLC, Contra Costa, CA
Built 1994 ADT: 195,300
INTERSTATE 680
UnknownOver: OLYMPIC BOULEVARD
04-CC-680-13.93-WLC, Contra Costa, CA
Built 1994 ADT: 25,000
STATE ROUTE 242
UnknownOver: WILLOW PASS ROAD
04-CC-242-R0.87-CND, Contra Costa, CA
Built 1963 ADT: 24,000
INTERSTATE 680
UnknownOver: LILAC DRIVE
04-CC-680-13.46-WLC, Contra Costa, CA
Built 1960 ADT: 3,115
INTERSTATE 680
UnknownOver: SOUTH MAIN STREET
04-CC-680-13.08-WLC, Contra Costa, CA
Built 1959 ADT: 14,871
BNSF RY & AMTRAK
UnknownOver: INTERSTATE 680
04-CC-680-22.20, Contra Costa, CA
Built 1962 ADT: 118,000
N680-PACHECO OFFRP
UnknownOver: INTERSTATE ROUTE 680
04-CC-680-22.43, Contra Costa, CA
Built 1962 ADT: 118,000
INTERSTATE 680 SB
UnknownOver: UPRR,MARINA VISTA,MOCOCO
04-CC-680-24.26, Contra Costa, CA
Built 1962 ADT: 7,000
STATE ROUTE 4
UnknownOver: INTERSTATE ROUTE 680
04-CC-004-12.64, Contra Costa, CA
Built 1962 ADT: 165,000
INTERSTATE 680
UnknownOver: CENTER AVE
04-CC-680-20.38, Contra Costa, CA
Built 1962 ADT: 6,300
STATE ROUTE 4
UnknownOver: PACHECO BLVD
04-CC-004-12.41, Contra Costa, CA
Built 1962 ADT: 15,000
HILLCREST AVE NB
UnknownOver: STATE ROUTE 4
04-CC-004-R28.94-ANT, Contra Costa, CA
Built 1997 ADT: 94,000
HILLCREST AVE SB
UnknownOver: STATE ROUTE 4
04-CC-004-R28.90-ANT, Contra Costa, CA
Built 1971 ADT: 94,000
SB SR 242 ON-RAMP
UnknownOver: CONCORD AVENUE
04-CC-242-R1.40-CND, Contra Costa, CA
Built 1996 ADT: 33,549
WILDER ROAD
UnknownOver: STATE ROUTE 24
04-CC-024-1.20, Contra Costa, CA
Built 1964 ADT: 159,000
W4-W80 CONNECTOR
UnknownOver: STATE ROUTE 4
04-CC-004-0.20-HER, Contra Costa, CA
Built 1958 ADT: 40,500
E4-E80 CONNECTOR
UnknownOver: STATE ROUTE 4
04-CC-004-L0.15-HER, Contra Costa, CA
Built 1958 ADT: 40,500
INTERSTATE 680
UnknownOver: CONCORD AVE
04-CC-680-19.86-CND, Contra Costa, CA
Built 1962 ADT: 10,500
INTERSTATE 680
UnknownOver: LIVORNA ROAD
04-CC-680-R11.28-ALMO, Contra Costa, CA
Built 1964 ADT: 7,052
SYCAMORE VALLEY RD
UnknownOver: INTERSTATE 680
04-CC-680-R6.76-DNVL, Contra Costa, CA
Built 1964 ADT: 192,200
INTERSTATE 680
UnknownOver: DIABLO ROAD
04-CC-680-R7.55-DNVL, Contra Costa, CA
Built 1964 ADT: 24,300
INTERSTATE 680
UnknownOver: EL CERRO BOULEVARD
04-CC-680-R8.18-DNVL, Contra Costa, CA
Built 1964 ADT: 18,862
INTERSTATE 680
UnknownOver: STONE VALLEY ROAD
04-CC-680-R10.37, Contra Costa, CA
Built 1964 ADT: 7,000
STATE ROUTE 4 WB
UnknownOver: BAILEY ROAD
04-CC-004-R20.10, Contra Costa, CA
Built 1995 ADT: 15,000
STATE ROUTE 4 EB
UnknownOver: BAILEY ROAD
04-CC-004-R20.10, Contra Costa, CA
Built 1994 ADT: 15,000
NORRIS CANYON ROAD
UnknownOver: INTERSTATE 680
04-CC-680-R3.76-SRMN, Contra Costa, CA
Built 1966 ADT: 170,100
CROW CANYON ROAD
UnknownOver: INTERSTATE 680
04-CC-680-R4.18-SRMN, Contra Costa, CA
Built 1966 ADT: 172,000
STATE ROUTE 242
UnknownOver: SOLANO WAY
04-CC-242-R2.15-CND, Contra Costa, CA
Built 1963 ADT: 16,900
ALCOSTA BOULEVARD
UnknownOver: INTERSTATE 680
04-CC-680-R0.01-SRMN, Contra Costa, CA
Built 1965 ADT: 181,700
CENTER AVENUE
UnknownOver: STATE ROUTE 4
04-CC-004-R9.18-MTZ, Contra Costa, CA
Built 1975 ADT: 62,000
CUMMINGS SKYWAY
UnknownOver: STATE ROUTE 4
04-CC-004-R4.89, Contra Costa, CA
Built 1967 ADT: 43,500
STATE ROUTE 4 WB
UnknownOver: ALHAMBRA AVE
04-CC-004-R8.55-MTZ, Contra Costa, CA
Built 1967 ADT: 70,000
STATE ROUTE 4 EB
UnknownOver: ALHAMBRA AVE
04-CC-004-R8.55-MTZ, Contra Costa, CA
Built 1967 ADT: 70,000
STATE ROUTE 4 WB
UnknownOver: MCEWEN ROAD
04-CC-004-R5.17, Contra Costa, CA
Built 1967 ADT: 75
STATE ROUTE 4 EB
UnknownOver: MCEWEN ROAD
04-CC-004-R5.17, Contra Costa, CA
Built 1967 ADT: 75
STATE ROUTE 4 WB
UnknownOver: ALHAMBRA WAY
04-CC-004-R8.75-MTZ, Contra Costa, CA
Built 1967 ADT: 59,000
STATE ROUTE 4 EB
UnknownOver: ALHAMBRA WAY
04-CC-004-R8.75-MTZ, Contra Costa, CA
Built 1967 ADT: 59,000
MILANO WAY
UnknownOver: STATE ROUTE 4
04-CC-004-R11.13-MTZ, Contra Costa, CA
Built 1975 ADT: 62,000
STATE ROUTE 4 WB
UnknownOver: MORELLO AVE
04-CC-004-R10.33-MTZ, Contra Costa, CA
Built 1975 ADT: 15,000
STATE ROUTE 4 EB
UnknownOver: MORELLO AVE
04-CC-004-R10.33-MTZ, Contra Costa, CA
Built 1975 ADT: 15,000
Showing 551-600 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 |