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
W10-CAMPUS DR OFF
UnknownOver: N&S710-W10 CONNECTOR RMP
07-LA-010-21.22-MONP, Los Angeles, CA
Built 1972 ADT: 219,000
ROUTE 710 SB
UnknownOver: ROUTE 10 & CONNECTORS
07-LA-710-26.47-MONP, Los Angeles, CA
Built 1960 ADT: 208,000
ROUTE 710 NB
UnknownOver: ROUTE 10 & CONNECTORS
07-LA-710-26.47-MONP, Los Angeles, CA
Built 1960 ADT: 25,000
PEDESTRIAN WALKWAY
UnknownOver: STATE ROUTE 60
07-LA-060-R3.60, Los Angeles, CA
Built 1967 ADT: 231,000
N710-E&W10 CONNECT
UnknownOver: I 710, I 10,CONNS,RAMONA
07-LA-710-T31.40-MONP, Los Angeles, CA
Built 1960 ADT: 215,000
INTERSTATE 405
UnknownOver: VICTORY BLVD
07-LA-405-41.36-LA, Los Angeles, CA
Built 1963 ADT: 25,000
W134-N170 CONNECTR
UnknownOver: RIVERSIDE DR
07-LA-134-0.03-LA, Los Angeles, CA
Built 1962 ADT: 14,100
S110-N&S5 CONNECTR
UnknownOver: ST RTE 110 & ARROYO SECO
07-LA-110-26.12-LA, Los Angeles, CA
Built 1962 ADT: 182,000
E10-S710 CONNECTOR
UnknownOver: RAMONA BLVD
07-LA-010-21.33-MONP, Los Angeles, CA
Built 1960 ADT: 11,200
ROUTE 710 SB
UnknownOver: RAMONA BLVD
07-LA-710-26.38-MONP, Los Angeles, CA
Built 1960 ADT: 12,800
ROUTE 710 NB
UnknownOver: RAMONA BLVD
07-LA-710-26.38-MONP, Los Angeles, CA
Built 1960 ADT: 12,800
ROUTE 5
UnknownOver: DUVALL ST-S5 & S110 ONRP
07-LA-005-20.94-LA, Los Angeles, CA
Built 1961 ADT: 4,600
N110-N5 CONNECTOR
UnknownOver: DUVALL ST-S5 & S110 RAMP
07-LA-005-20.94-LA, Los Angeles, CA
Built 1961 ADT: 2,500
ROUTE 5
UnknownOver: S5-ELMGROVE ST OFF RAMP
07-LA-005-20.99-LA, Los Angeles, CA
Built 1961 ADT: 2,450
N110-N5 CONNECTOR
UnknownOver: S5-ELMGROVE ST OFF-RAMP
07-LA-005-20.99-LA, Los Angeles, CA
Built 1961 ADT: 2,500
ST RTE 60 EB
UnknownOver: INTERSTATE 5 SB
07-LA-060-0.45-LA, Los Angeles, CA
Built 1960 ADT: 60,000
CENTRAL OUTFALL
UnknownOver: INTERSTATE 405
07-LA-405-23.52-ING, Los Angeles, CA
Built 1961 ADT: 2,000
MANCHESTER BLVD
UnknownOver: N405-LA CIENEGA OFF RAMP
07-LA-405-23.36-ING, Los Angeles, CA
Built 1961 ADT: 268,000
OLINDA STREET POC
UnknownOver: INTERSTATE 5
07-LA-005-33.98-LA, Los Angeles, CA
Built 1961 ADT: 183,000
STATE ROUTE 47
UnknownOver: SAN PEDRO TERMINAL ISL
07-LA-047-0.86, Los Angeles, CA
Built 1963 ADT: 22,500
WICKS STREET POC
UnknownOver: INTERSTATE 5
07-LA-005-35.63-LA, Los Angeles, CA
Built 1963 ADT: 187,358
N&S710-S405 CONNEC
UnknownOver: S405-PACIFIC PL OFF-RAMP
07-LA-710-9.20-LBCH, Los Angeles, CA
Built 1963 ADT: 3,053
SR 2
UnknownOver: GLENDALE BLVD
07-LA-002-14.21-LA, Los Angeles, CA
Built 1962 ADT: 6,000
N405-N710 CONNECTO
UnknownOver: APPIAN WAY-N405 ON-RAMP
07-LA-405-7.20-LBCH, Los Angeles, CA
Built 1963 ADT: 2,600
PECK ROAD
UnknownOver: ROUTE 605 & RAMP
07-LA-605-R16.65-IDY, Los Angeles, CA
Built 1963 ADT: 251,000
INTERSTATE 405
UnknownOver: WILLOW STREET
07-LA-405-3.01-LBCH, Los Angeles, CA
Built 1963 ADT: 2,000
LAKEWOOD-N405 O.RP
UnknownOver: LAKEWOOD BL N405 OFFRAMP
07-LA-405-3.20-LBCH, Los Angeles, CA
Built 1964 ADT: 10,000
MANCHESTER-N405 ON
UnknownOver: N405-LA CIENEGA OFF-RAMP
07-LA-405-23.32-ING, Los Angeles, CA
Built 1963 ADT: 19,500
W10-W187 (VENICE)
UnknownOver: FAIRFAX-W10, E10-FAIRFAX
07-LA-010-R9.22-LA, Los Angeles, CA
Built 1964 ADT: 4,115
BNSF, SCRRA METRO
UnknownOver: INTERSTATE 710
07-LA-710-R26.59-MONP, Los Angeles, CA
Built 1974 ADT: 400
E134-RIVERSIDE OFF
UnknownOver: US 101 NB & SR 170
07-LA-134-0.01-LA, Los Angeles, CA
Built 1959 ADT: 190,000
INTERSTATE 405
UnknownOver: DEVONSHIRE STREET
07-LA-405-46.24-LA, Los Angeles, CA
Built 1963 ADT: 15,146
INTERSTATE 405
UnknownOver: CHATSWORTH STREET
07-LA-405-46.74-LA, Los Angeles, CA
Built 1963 ADT: 9,075
INTERSTATE 605
UnknownOver: STATE ROUTE 72
07-LA-605-R13.55-WIT, Los Angeles, CA
Built 1964 ADT: 40,000
PEDESTRIAN WALKWAY
UnknownOver: INTERSTATE 405
07-LA-405-22.90-ING, Los Angeles, CA
Built 1963 ADT: 99
UTILITY OC
UnknownOver: ROUTE 405
07-LA-405-5.76-SIGH, Los Angeles, CA
Built 1963 ADT: 278,000
OLIVE ST-S405 ONRP
UnknownOver: S405-CENTURY BLVD OFF-RP
07-LA-405-22.55-ING, Los Angeles, CA
Built 1963 ADT: 24,500
CENTURY BL-N405 ON
UnknownOver: N405-MANCHESTER BL OFFRP
07-LA-405-22.53-ING, Los Angeles, CA
Built 1963 ADT: 15,001
PEDESTRIAN WALKWAY
UnknownOver: INTERSTATE 110
07-LA-110-7.20-LA, Los Angeles, CA
Built 1962 ADT: 199,500
220ST POC
UnknownOver: INTERSTATE 110
07-LA-110-6.76-CRSN, Los Angeles, CA
Built 1962 ADT: 178,900
INTERSTATE 10
UnknownOver: GRAND AVE
07-LA-010-38.51-WCOV, Los Angeles, CA
Built 1961 ADT: 23,200
OBREGON STREET
UnknownOver: INTERSTATE 605
07-LA-605-R13.98, Los Angeles, CA
Built 1964 ADT: 271,500
BEVERLY BLVD
UnknownOver: INTERSTATE 605
07-LA-605-R14.41-PRV, Los Angeles, CA
Built 1964 ADT: 27,100
ROSE HILLS ROAD
UnknownOver: INTERSTATE 605
07-LA-605-R15.57-PRV, Los Angeles, CA
Built 1964 ADT: 271,500
E60-N605 CONNECTOR
UnknownOver: INTERSTATE 605 & RAMP
07-LA-060-11.65-IDY, Los Angeles, CA
Built 1967 ADT: 47,500
STATE ROUTE 60
UnknownOver: INTERSTATE 605 & RAMPS
07-LA-060-11.67-IDY, Los Angeles, CA
Built 1967 ADT: 14,200
W60-S605 CONNECTOR
UnknownOver: INTERSTATE 605 & RAMP
07-LA-060-11.75-IDY, Los Angeles, CA
Built 1967 ADT: 34,500
INTERSTATE 605
UnknownOver: RIVERGRADE OH, VALLEY
07-LA-605-R19.39-IDY, Los Angeles, CA
Built 1964 ADT: 38,500
PEDESTRIAN WALKWAY
UnknownOver: INTERSTATE 5
07-LA-005-13.57-CMRC, Los Angeles, CA
Built 1961 ADT: 231,540
ESCONDIDO RD
UnknownOver: ROUTE 14
07-LA-014-43.29, Los Angeles, CA
Built 1963 ADT: 97,000
Showing 1,951-2,000 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 |