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
E10-N605 CONNECTOR
UnknownOver: W10-S605 CONNECTOR RAMP
07-LA-010-31.18-BWP, Los Angeles, CA
Built 1964 ADT: 207,800
INTERSTATE 10
UnknownOver: COVENTRY PLACE
07-LA-010-R5.99-LA, Los Angeles, CA
Built 1964 ADT: 2,300
N110-STADIUM WAY
UnknownOver: STATE ROUTE 110
07-LA-110-24.53R-LA, Los Angeles, CA
Built 1962 ADT: 210,000
W10-S405 CONN
UnknownOver: 10, 405, RAMPS, STS
07-LA-010-R5.65-LA, Los Angeles, CA
Built 1964 ADT: 268,000
N405-E10 CONNECTOR
UnknownOver: SEPULVEDA BLVD
07-LA-405-29.42-LA, Los Angeles, CA
Built 1963 ADT: 28,978
INTERSTATE 10
UnknownOver: MILITARY AVE
07-LA-010-R5.76-LA, Los Angeles, CA
Built 1964 ADT: 4,120
INTERSTATE 605
UnknownOver: ALONDRA BLVD
07-LA-605-R5.81-NRW, Los Angeles, CA
Built 1966 ADT: 26,265
INTERSTATE 605
UnknownOver: EXCELSIOR DRIVE
07-LA-605-R6.40-NRW, Los Angeles, CA
Built 1966 ADT: 2,200
INTERSTATE 605
UnknownOver: ROSECRANS AVE
07-LA-605-R6.81-NRW, Los Angeles, CA
Built 1966 ADT: 3,350
INTERSTATE 605
UnknownOver: IMPERIAL HIGHWAY
07-LA-605-R7.85-NRW, Los Angeles, CA
Built 1966 ADT: 23,000
IMPERIAL-S605 RMP
UnknownOver: IMPERIAL HIGHWAY
07-LA-605-R7.85-NRW, Los Angeles, CA
Built 1993 ADT: 24,200
N605-FIRESTONE BLD
UnknownOver: IMPERIAL HWY, ON-RAMP
07-LA-605-R7.84-NRW, Los Angeles, CA
Built 1993 ADT: 2,400
INTERSTATE 605
UnknownOver: FIRESTONE BLVD
07-LA-605-R8.38-NRW, Los Angeles, CA
Built 1966 ADT: 34,000
N605-FIRESTONE RMP
UnknownOver: FIRESTONE BLVD
07-LA-605-R8.37-NRW, Los Angeles, CA
Built 1993 ADT: 34,000
INTERSTATE 605
UnknownOver: CECILIA STREET
07-LA-605-R8.91-NRW, Los Angeles, CA
Built 1966 ADT: 1,000
N605-N5&S5 CONN
UnknownOver: STUDEBAKER RD-N605 ON-RP
07-LA-605-R9.22-DNY, Los Angeles, CA
Built 1965 ADT: 2,500
INTERSTATE 605
UnknownOver: FLORENCE AVE
07-LA-605-R9.35-DNY, Los Angeles, CA
Built 1965 ADT: 33,000
N605-S5 CONNECTOR
UnknownOver: FLORENCE AVE
07-LA-605-R9.35-DNY, Los Angeles, CA
Built 1965 ADT: 33,000
N605-N5 CONNECTOR
UnknownOver: ROUTE 5
07-LA-605-R9.52-SFSP, Los Angeles, CA
Built 1965 ADT: 186,000
FLORENCE-N5 ON RMP
UnknownOver: N5-N&S605 CONNECTOR RAMP
07-LA-005-6.65-SFSP, Los Angeles, CA
Built 1965 ADT: 22,950
S605-FLORENCE OFRP
UnknownOver: S5-N&S605 CONN
07-LA-605-R9.54-DNY, Los Angeles, CA
Built 1965 ADT: 230,000
INTERSTATE 605
UnknownOver: I 5 & CONNECTOR RAMPS
07-LA-605-R9.55-SFSP, Los Angeles, CA
Built 1965 ADT: 22,700
INTERSTATE 605
UnknownOver: TELEGRAPH RD
07-LA-605-R10.25-SFSP, Los Angeles, CA
Built 1965 ADT: 2,400
INTERSTATE 605
UnknownOver: SLAUSON AVE
07-LA-605-R11.54-SFSP, Los Angeles, CA
Built 1965 ADT: 38,000
INTERSTATE 605
UnknownOver: WASHINGTON BLVD
07-LA-605-R12.05-SFSP, Los Angeles, CA
Built 1965 ADT: 36,000
INTERSTATE 605
UnknownOver: SARAGOSA STREET
07-LA-605-R12.41-SFSP, Los Angeles, CA
Built 1965 ADT: 14,000
INTERSTATE 605
UnknownOver: DUNLAP CROSSING ROAD
07-LA-605-R12.85-SFSP, Los Angeles, CA
Built 1965 ADT: 1,250
INTERSTATE 605
UnknownOver: BEXLEY DR
07-LA-605-R13.18-SFSP, Los Angeles, CA
Built 1965 ADT: 3,100
ROUTE 170
UnknownOver: VANOWEN STREET
07-LA-170-R17.75-LA, Los Angeles, CA
Built 1968 ADT: 5,000
UPRR,AMTRAK,METRO
UnknownOver: STATE ROUTE 170
07-LA-170-R18.40-LA, Los Angeles, CA
Built 1968 ADT: 184,000
STATE ROUTE 170
UnknownOver: ROSCOE BLVD
07-LA-170-R19.72-LA, Los Angeles, CA
Built 1968 ADT: 5,000
ROUTE 170
UnknownOver: STRATHERN STREET
07-LA-170-R19.30-LA, Los Angeles, CA
Built 1968 ADT: 5,000
SHERMAN WAY OC
UnknownOver: ROUTE 170
07-LA-170-R18.27-LA, Los Angeles, CA
Built 1968 ADT: 206,000
PALO COMADO CYN RD
UnknownOver: ROUTE 101
07-LA-101-33.69-AGRH, Los Angeles, CA
Built 1963 ADT: 185,000
PARKWAY CALABASAS
UnknownOver: US 101
07-LA-101-28.29-LA, Los Angeles, CA
Built 1965 ADT: 196,000
MUREAU RD
UnknownOver: ROUTE 101
07-LA-101-29.06, Los Angeles, CA
Built 1965 ADT: 196,000
RAMP/CONNECTOR 170
UnknownOver: SHERMAN WY N170 ON-RAMP
07-LA-170-R18.16-LA, Los Angeles, CA
Built 1968 ADT: 3,000
STATE ROUTE 170
UnknownOver: BURBANK BLVD
07-LA-170-R15.99-LA, Los Angeles, CA
Built 1966 ADT: 8,500
STATE ROUTE 170
UnknownOver: LAUREL CANYON BLVD
07-LA-170-R16.77-LA, Los Angeles, CA
Built 1966 ADT: 14,000
STATE ROUTE 170
UnknownOver: VICTORY BLVD
07-LA-170-R17.25-LA, Los Angeles, CA
Built 1966 ADT: 5,000
STATE ROUTE 170
UnknownOver: VICTORY BLVD
07-LA-170-R17.25-LA, Los Angeles, CA
Built 1966 ADT: 5,000
STATE ROUTE 170
UnknownOver: VICTORY BLVD
07-LA-170-R17.25-LA, Los Angeles, CA
Built 1966 ADT: 5,000
INTERSTATE 5
UnknownOver: RYE CANYON ROAD
07-LA-005-R54.17-SCTA, Los Angeles, CA
Built 1964 ADT: 12,012
HART STREET POC
UnknownOver: STATE ROUTE 170
07-LA-170-R18.02-LA, Los Angeles, CA
Built 1968 ADT: 184,000
STATE ROUTE 60
UnknownOver: FINDLAY AVE
07-LA-060-R5.16-MTBL, Los Angeles, CA
Built 1967 ADT: 5,100
STATE ROUTE 60
UnknownOver: WILCOX AVENUE
07-LA-060-R5.89-MTBL, Los Angeles, CA
Built 1967 ADT: 19,000
ROUTE 60
UnknownOver: GARFIELD AVE
07-LA-060-R5.60-MTBL, Los Angeles, CA
Built 1967 ADT: 29,250
STATE ROUTE 60
UnknownOver: ATLANTIC BLVD
07-LA-060-R4.43-MONP, Los Angeles, CA
Built 1967 ADT: 41,746
STATE ROUTE 60
UnknownOver: POMONA BLVD
07-LA-060-R4.68-MONP, Los Angeles, CA
Built 1967 ADT: 5,448
VICTORY BL-N170 ON
UnknownOver: N170-VICTORY BL OFF-RAMP
07-LA-170-R17.13-LA, Los Angeles, CA
Built 1966 ADT: 1,500
Showing 2,051-2,100 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 |