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
INTERSTATE 405
UnknownOver: PALO VERDE AVE
07-LA-405-1.11-LBCH, Los Angeles, CA
Built 1963 ADT: 99
INTERSTATE 405
UnknownOver: WOODRUFF AVE
07-LA-405-1.64-LBCH, Los Angeles, CA
Built 1963 ADT: 99
N405-BELLFLOWER BL
UnknownOver: LOS COYOTES DIAGONAL
07-LA-405-2.16-LBCH, Los Angeles, CA
Built 1963 ADT: 99
INTERSTATE 405
UnknownOver: BELLFLOWER BLVD
07-LA-405-2.18-LBCH, Los Angeles, CA
Built 1963 ADT: 99
NB BELLFLOWER-N405
UnknownOver: BELLFLOWER UC
07-LA-405-2.25-LBCH, Los Angeles, CA
Built 1963 ADT: 99
INTERSTATE 405
UnknownOver: CLARK AVE
07-LA-405-2.76-LBCH, Los Angeles, CA
Built 1963 ADT: 99
INTERSTATE 405
UnknownOver: LAKEWOOD BLVD
07-LA-405-3.30-LBCH, Los Angeles, CA
Built 1964 ADT: 31,300
N405-LAKEWOOD OFF
UnknownOver: LAKEWOOD BLVD
07-LA-405-3.30-LBCH, Los Angeles, CA
Built 1960 ADT: 99
INTERSTATE 405
UnknownOver: REDONDO AVENUE
07-LA-405-3.82-LBCH, Los Angeles, CA
Built 1964 ADT: 12,600
TEMPLE AVE
UnknownOver: INTERSTATE 405
07-LA-405-4.33-LBCH, Los Angeles, CA
Built 1964 ADT: 278,000
SPRING STREET
UnknownOver: INTERSTATE 405
07-LA-405-4.53-LBCH, Los Angeles, CA
Built 1962 ADT: 278,000
CHERRY AVENUE
UnknownOver: ROUTE 405
07-LA-405-4.88-LBCH, Los Angeles, CA
Built 1964 ADT: 278,000
WALNUT AVENUE
UnknownOver: ROUTE 405
07-LA-405-5.14-LBCH, Los Angeles, CA
Built 1964 ADT: 268,600
ORANGE AVENUE
UnknownOver: ROUTE 405
07-LA-405-5.39-SIGH, Los Angeles, CA
Built 1964 ADT: 278,000
CALIFORNIA AVE
UnknownOver: I 405 & RAMPS
07-LA-405-5.64-SIGH, Los Angeles, CA
Built 1964 ADT: 278,000
ATLANTIC AVENUE
UnknownOver: ROUTE 405
07-LA-405-6.08-LBCH, Los Angeles, CA
Built 1963 ADT: 277,000
INTERSTATE 405
UnknownOver: LONG BEACH BLVD
07-LA-405-6.34-LBCH, Los Angeles, CA
Built 1963 ADT: 16,800
INTERSTATE 405
UnknownOver: WARDLOW ROAD
07-LA-405-6.50-LBCH, Los Angeles, CA
Built 1963 ADT: 11,200
INTERSTATE 405
UnknownOver: PACIFIC AVENUE
07-LA-405-6.70-LBCH, Los Angeles, CA
Built 1963 ADT: 3,500
INTERSTATE 405
UnknownOver: BLUE LINE LRT,PACIFIC PL
07-LA-405-6.98-LBCH, Los Angeles, CA
Built 1963 ADT: 4,900
I 405 & COLLECTOR
UnknownOver: ROUTE 710 & RAMPS
07-LA-405-7.57-LBCH, Los Angeles, CA
Built 1961 ADT: 212,600
WARDLOW RD-S405
UnknownOver: I 710 & CONNECTOR RAMPS
07-LA-405-7.57-LBCH, Los Angeles, CA
Built 1961 ADT: 133,000
INTERSTATE 405
UnknownOver: SANTA FE AVE
07-LA-405-8.06-LBCH, Los Angeles, CA
Built 1961 ADT: 17,000
S405-N710 CONN
UnknownOver: SANTA FE AVE
07-LA-405-8.06-LBCH, Los Angeles, CA
Built 1961 ADT: 17,800
ROSCOE BLVD
UnknownOver: ROUTE 5
07-LA-005-33.28-LA, Los Angeles, CA
Built 1960 ADT: 187,358
RAMP/CONNECTOR 5
UnknownOver: TUXFORD RAMP SEPARATION
07-LA-005-34.72-LA, Los Angeles, CA
Built 1961 ADT: 5,935
N5-TUXFORD OFF-RMP
UnknownOver: INTERSTATE 5
07-LA-005-34.82-LA, Los Angeles, CA
Built 1961 ADT: 187,358
LAUREL CYN BLVD
UnknownOver: ROUTE 5
07-LA-005-35.94-LA, Los Angeles, CA
Built 1963 ADT: 187,358
SHARP AV-S5 ON RMP
UnknownOver: S5-S170 CONNECTOR RAMP
07-LA-005-36.34-LA, Los Angeles, CA
Built 1963 ADT: 32,163
U.S. HIGHWAY 101
UnknownOver: VINELAND AVE
07-LA-101-11.11-LA, Los Angeles, CA
Built 1957 ADT: 15,500
U.S. HIGHWAY 101
UnknownOver: MOORPARK STREET
07-LA-101-11.45-LA, Los Angeles, CA
Built 1957 ADT: 19,201
INTERSTATE 405
UnknownOver: ARTESIA BLVD
07-LA-405-16.56-TOR, Los Angeles, CA
Built 1962 ADT: 40,000
INTERSTATE 405
UnknownOver: PRAIRIE AVENUE
07-LA-405-16.78-TOR, Los Angeles, CA
Built 1962 ADT: 37,294
INTERSTATE 405
UnknownOver: REDONDO BEACH BLVD
07-LA-405-16.88-TOR, Los Angeles, CA
Built 1962 ADT: 36,103
INTERSTATE 405
UnknownOver: HAWTHORNE BLVD
07-LA-405-17.56-LNDL, Los Angeles, CA
Built 1962 ADT: 55,100
INTERSTATE 405
UnknownOver: MANHATTAN BEACH BLVD
07-LA-405-17.86-LNDL, Los Angeles, CA
Built 1963 ADT: 16,217
INTERSTATE 405
UnknownOver: INGLEWOOD AVE
07-LA-405-18.23-LNDL, Los Angeles, CA
Built 1963 ADT: 13,726
INTRESTATE 405
UnknownOver: MARINE AVENUE
07-LA-405-18.63-RDOB, Los Angeles, CA
Built 1963 ADT: 12,524
INTERSTATE 405
UnknownOver: ROSECRANS AVE
07-LA-405-19.21-HAW, Los Angeles, CA
Built 1963 ADT: 28,514
N405-E&W105 CONN
UnknownOver: UPRR, EL SEGUNDO BL,RMPS
07-LA-405-20.19-HAW, Los Angeles, CA
Built 1989 ADT: 1,000
INTERSTATE 405
UnknownOver: EL SEGUNDO BLVD
07-LA-405-20.22-HAW, Los Angeles, CA
Built 1963 ADT: 28,659
E&W105-S405 CONN
UnknownOver: EL SEGUNDO BLVD
07-LA-105-R2.05-LA, Los Angeles, CA
Built 1989 ADT: 33,354
105-EL SEGUNDO BL
UnknownOver: EL SEGUNDO BLVD
07-LA-405-20.24-HAW, Los Angeles, CA
Built 1989 ADT: 28,659
INTERSTATE 405
UnknownOver: 120TH STREET
07-LA-405-R20.73-ESEG, Los Angeles, CA
Built 1963 ADT: 1,000
N405-E&W105 CONNCT
UnknownOver: 120TH STREET
07-LA-405-R20.72, Los Angeles, CA
Built 1989 ADT: 1,000
E&W105-S405 CONN
UnknownOver: 120TH STREET
07-LA-105-R2.02, Los Angeles, CA
Built 1989 ADT: 16,830
INTERSTATE 405
UnknownOver: IMPERIAL HIGHWAY
07-LA-405-R21.22-LA, Los Angeles, CA
Built 1963 ADT: 22,500
S405-LA CIENEGA OF
UnknownOver: IMPERIAL HWY & S405 ON
07-LA-405-R21.22-LA, Los Angeles, CA
Built 1994 ADT: 22,500
N405-CENTURY BL OF
UnknownOver: IMPERIAL HIGHWAY
07-LA-405-R21.22-LA, Los Angeles, CA
Built 1963 ADT: 22,000
IMPERIAL HWY-N405
UnknownOver: IMPERIAL HIGHWAY
07-LA-405-R21.22-HAW, Los Angeles, CA
Built 1994 ADT: 22,500
Showing 1,801-1,850 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 |