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
SAN FERNANDO RD W
UnknownOver: I-5 SUPPLEMENTAL ROUTE
07-LA-005S-25.33-LA, Los Angeles, CA
Built 1957 ADT: 19,000
INTERSTATE 5
UnknownOver: HOLLYWOOD WAY
07-LA-005-32.35-LA, Los Angeles, CA
Built 1960 ADT: 12,500
SUNLAND BLVD
UnknownOver: I 5
07-LA-005-33.68-LA, Los Angeles, CA
Built 1961 ADT: 187,358
LANKERSHIM BLVD
UnknownOver: ROUTE 5
07-LA-005-34.99-LA, Los Angeles, CA
Built 1961 ADT: 187,358
PEORIA STREET
UnknownOver: ROUTE 5
07-LA-005-35.35-LA, Los Angeles, CA
Built 1963 ADT: 187,358
SHELDON STREET
UnknownOver: ROUTE 5
07-LA-005-36.00-LA, Los Angeles, CA
Built 1963 ADT: 187,358
I-5
UnknownOver: N405-N5 CONNECTOR RAMP
07-LA-005-41.57-LA, Los Angeles, CA
Built 1963 ADT: 97,600
INTERSTATE 405
UnknownOver: MAIN STREET
07-LA-405-12.60-CRSN, Los Angeles, CA
Built 1961 ADT: 11,000
INTERSTATE 405
UnknownOver: INTERSTATE 110
07-LA-405-12.95-LA, Los Angeles, CA
Built 1961 ADT: 218,800
S110-S405 CONNECTR
UnknownOver: I 110
07-LA-110-8.75-LA, Los Angeles, CA
Built 1961 ADT: 199,500
N405-S110 CONNECTR
UnknownOver: INTERSTATE 110
07-LA-405-12.95-CRSN, Los Angeles, CA
Built 1961 ADT: 220,000
INTERSTATE 405
UnknownOver: N110-N405 CONNECTOR RAMP
07-LA-405-12.83-CRSN, Los Angeles, CA
Built 1961 ADT: 36,631
N110-S405 CONNECTR
UnknownOver: FIGUEROA STREET
07-LA-110-8.58-CRSN, Los Angeles, CA
Built 1961 ADT: 20,240
INTERSTATE 405
UnknownOver: FIGUEROA STREET
07-LA-405-12.73-CRSN, Los Angeles, CA
Built 1961 ADT: 8,000
N405-N&S110 CONNEC
UnknownOver: FIGUEROA STREET
07-LA-405-12.74-CRSN, Los Angeles, CA
Built 1961 ADT: 8,000
INTERSTATE 405
UnknownOver: S110-S405 CONNECTOR RAMP
07-LA-405-13.06-LA, Los Angeles, CA
Built 1961 ADT: 220,000
INTERSTATE 405
UnknownOver: VERMONT AVE, 190TH ST
07-LA-405-13.28-LA, Los Angeles, CA
Built 1962 ADT: 30,000
US HIGHWAY 101 SB
UnknownOver: N405-N101 CONNECTOR RAMP
07-LA-101-17.07L-LA, Los Angeles, CA
Built 1958 ADT: 93,000
S101-N405 CONNECTR
UnknownOver: I 405 & N101-S405 RAMP
07-LA-101-17.14L-LA, Los Angeles, CA
Built 1958 ADT: 18,001
N101-S405 CONNECTR
UnknownOver: I 405 & N101-S405 RAMP
07-LA-101-17.14R-LA, Los Angeles, CA
Built 1958 ADT: 18,000
US HIGHWAY 101 SB
UnknownOver: I 405 & N101-S405 RAMP
07-LA-101-17.14L-LA, Los Angeles, CA
Built 1958 ADT: 18,001
US HIGHWAY 101 NB
UnknownOver: I 405 & N101-S405 RAMP
07-LA-101-17.14R-LA, Los Angeles, CA
Built 1958 ADT: 18,000
US HIGHWAY 101 NB
UnknownOver: S405-S101 CONNECTOR RAMP
07-LA-101-17.29R-LA, Los Angeles, CA
Built 1958 ADT: 93,000
ROUTE 710
UnknownOver: WHITTIER BLVD
07-LA-710-23.77-LA, Los Angeles, CA
Built 1960 ADT: 17,500
HUMPHREYS AVE
UnknownOver: INTERSTATE 710 & CONNS
07-LA-710-24.22-LA, Los Angeles, CA
Built 1960 ADT: 192,000
THIRD STREET
UnknownOver: INTERSTATE 710
07-LA-710-24.47-LA, Los Angeles, CA
Built 1960 ADT: 15,000
FIRST ST
UnknownOver: INTERSTATE 710
07-LA-710-24.72-LA, Los Angeles, CA
Built 1960 ADT: 127,000
CESAR E. CHAVEZ AV
UnknownOver: INTERSTATE 710
07-LA-710-24.97-LA, Los Angeles, CA
Built 1960 ADT: 127,000
ROUTE 710 NB
UnknownOver: FLORAL DRIVE
07-LA-710-25.21-LA, Los Angeles, CA
Built 1960 ADT: 20,500
PEDESTRIAN WALKWAY
UnknownOver: STATE ROUTE 71
07-LA-071-2.02-POM, Los Angeles, CA
Built 1958 ADT: 72,000
PEDESTRIAN WALKWAY
UnknownOver: U.S. HIGHWAY 101
07-LA-101-26.68-LA, Los Angeles, CA
Built 1957 ADT: 210,000
INTERSTATE 405
UnknownOver: AVALON BLVD
07-LA-405-11.22-CRSN, Los Angeles, CA
Built 1961 ADT: 20,000
INTERSTATE 405
UnknownOver: WILMINGTON AVE
07-LA-405-9.56-CRSN, Los Angeles, CA
Built 1962 ADT: 23,800
INTERSTATE 405
UnknownOver: UP RR & ALAMEDA STREET
07-LA-405-8.76-CRSN, Los Angeles, CA
Built 1962 ADT: 8,200
OIL PIPELINE
UnknownOver: INTERSTATE 710
07-LA-710-20.51-BELL, Los Angeles, CA
Built 1957 ADT: 220,000
INTERSTATE 405
UnknownOver: CARSON STREET
07-LA-405-10.54-CRSN, Los Angeles, CA
Built 1961 ADT: 12,900
INTERSTATE 405
UnknownOver: WESTERN AVENUE
07-LA-405-14.40-LA, Los Angeles, CA
Built 1962 ADT: 15,000
ZOO DRIVE
UnknownOver: I 5
07-LA-005-26.47-LA, Los Angeles, CA
Built 1967 ADT: 5,000
INTERSTATE 405
UnknownOver: VAN NESS AVENUE
07-LA-405-14.92-TOR, Los Angeles, CA
Built 1962 ADT: 11,700
INTERSTATE 405
UnknownOver: CRENSHAW BLVD
07-LA-405-15.45-TOR, Los Angeles, CA
Built 1962 ADT: 25,000
INTERSTATE 405
UnknownOver: 182ND STREET
07-LA-405-15.73-TOR, Los Angeles, CA
Built 1962 ADT: 18,500
INTERSTATE 405
UnknownOver: YUKON AVENUE
07-LA-405-15.98-TOR, Los Angeles, CA
Built 1962 ADT: 5,000
INTERSTATE 405
UnknownOver: SHERMAN WAY
07-LA-405-42.36-LA, Los Angeles, CA
Built 1963 ADT: 25,000
INTERSTATE 405
UnknownOver: NORMANDIE AVE & RR
07-LA-405-13.83-LA, Los Angeles, CA
Built 1962 ADT: 1,000
GRIFFITH PARK DR-S
UnknownOver: S5-LOS FELIZ BL OFF RAMP
07-LA-005-24.60-LA, Los Angeles, CA
Built 1957 ADT: 22,000
N5-GRIFFITH PARK D
UnknownOver: ROUTE 5 & S5-LOS FELIZ B
07-LA-005-24.61-LA, Los Angeles, CA
Built 1957 ADT: 264,292
PEDESTRIAN WALKWAY
UnknownOver: INTERSTATE 5
07-LA-005-23.97-LA, Los Angeles, CA
Built 1957 ADT: 264,292
SP/UP RR
UnknownOver: INTERSTATE 110
07-LA-110-13.77-LA, Los Angeles, CA
Built 1986 ADT: 260,000
INTERSTATE 405
UnknownOver: STUDEBAKER ROAD
07-LA-405-0.45-LBCH, Los Angeles, CA
Built 1963 ADT: 99
INTERSTATE 405
UnknownOver: STEARNS STREET
07-LA-405-0.96-LBCH, Los Angeles, CA
Built 1963 ADT: 99
Showing 1,751-1,800 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 |