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

Total Bridges

27,040

Public highway bridges in California

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)

California32.45931952662722%34.67455621301775%GoodFairPoorStructurally Deficient
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
Structure
Progressive
Burden @ $100K
$26,753

34

New Jersey

4.59% top marginal rate
Structure
Progressive
Burden @ $100K
$6,796
Selected

06

California

4.60% top marginal rate
Structure
Progressive
Burden @ $100K
$27,040

05

Arkansas

4.71% top marginal rate
Structure
Progressive
Burden @ $100K
$5,544

53

Washington

4.81% top marginal rate
Structure
Progressive
Burden @ $100K
$8,808

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

Poor

Over: FALL RIVER

0.5 MI N OF MCARTHUR RD, Shasta, CA

Built 1950 Load: 2.7 t ADT: 50

ORESTIMBA ROAD

Poor

Over: CCID MAIN CANAL

0.1 MI E DRAPER RD, Stanislaus, CA

Built 1919 Load: 2.9 t ADT: 684

CLARK STREET

Poor

Over: 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 Deficient

Over: MIDDLE FORK FEATHER RIV

0.2 MI S SH 70, Plumas, CA

Built 1954 Load: 3.2 t ADT: 10,046

AVENUE 10

Poor

Over: COTTONWOOD CREEK

JUST E/O ROAD 23, Madera, CA

Built 1950 Load: 3.6 t ADT: 50

S BISHOP AVE

Poor

Over: 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 15 SB

Unknown

Over: VALLEY PARKWAY

11-SD-015-R30.63-ESD, San Diego, CA

Built 1977 ADT: 37,147

INTERSTATE 15 NB

Unknown

Over: VALLEY PARKWAY

11-SD-015-R30.63-ESD, San Diego, CA

Built 1977 ADT: 37,147

INTERSTATE 15 SB

Unknown

Over: HALE AVENUE

11-SD-015-R30.97-ESD, San Diego, CA

Built 1977 ADT: 5,450

INTERSTATE 15 NB

Unknown

Over: HALE AVENUE

11-SD-015-R30.97-ESD, San Diego, CA

Built 1977 ADT: 5,450

INTERSTATE 15 SB

Unknown

Over: NCTD,BNSF RY,WASHINGTON

11-SD-015-R31.17-ESD, San Diego, CA

Built 1977 ADT: 13,300

INTERSTATE 15 NB

Unknown

Over: NCTD,BNSF RY,WASHINGTON

11-SD-015-R31.17-ESD, San Diego, CA

Built 1977 ADT: 13,300

N15-W&E78 CONNECTR

Unknown

Over: MISSION AVENUE

11-SD-015-R31.32-ESD, San Diego, CA

Built 1977 ADT: 25,700

INTERSTATE 15 SB

Unknown

Over: MISSION AVENUE

11-SD-015-R31.32-ESD, San Diego, CA

Built 1977 ADT: 25,700

INTERSTATE 15 NB

Unknown

Over: MISSION AVENUE

11-SD-015-R31.32-ESD, San Diego, CA

Built 1977 ADT: 25,700

INTERSTATE 15 SB

Unknown

Over: STATE ROUTE 78

11-SD-015-R31.48-ESD, San Diego, CA

Built 1977 ADT: 9,000

INTERSTATE 15 NB

Unknown

Over: STATE ROUTE 78

11-SD-015-R31.48-ESD, San Diego, CA

Built 1977 ADT: 11,000

N15-W78 CONNECTOR

Unknown

Over: RTE 15, RTE 78, CONN

11-SD-015-R31.47-ESD, San Diego, CA

Built 1977 ADT: 10,100

S15-E78 CONNECTOR

Unknown

Over: RTE 15, RTE 78,CONNS,ST

11-SD-015-R31.56, San Diego, CA

Built 1977 ADT: 5,450

INTERSTATE 15 SB

Unknown

Over: ROCK SPRINGS ROAD

11-SD-015-R31.99, San Diego, CA

Built 1977 ADT: 9,830

INTERSTATE 15 NB

Unknown

Over: ROCK SPRINGS ROAD

11-SD-015-R31.99, San Diego, CA

Built 1977 ADT: 9,830

INTERSTATE 15 SB

Unknown

Over: EL NORTE PARKWAY

11-SD-015-R32.86-ESD, San Diego, CA

Built 1977 ADT: 13,000

INTERSTATE 15 NB

Unknown

Over: EL NORTE PARKWAY

11-SD-015-R32.86-ESD, San Diego, CA

Built 1977 ADT: 13,000

INTERSTATE 15 SB

Unknown

Over: COUNTRY CLUB LANE

11-SD-015-R33.57-ESD, San Diego, CA

Built 1977 ADT: 3,630

INTERSTATE 15 NB

Unknown

Over: COUNTRY CLUB LANE

11-SD-015-R33.57-ESD, San Diego, CA

Built 1977 ADT: 3,630

W78-N15 CONNECTOR

Unknown

Over: METCALF STREET

11-SD-078-R16.66-ESD, San Diego, CA

Built 1977 ADT: 5,450

N15-E78 CONN OC

Unknown

Over: METCALF STREET

11-SD-015-R31.50-ESD, San Diego, CA

Built 1977 ADT: 5,450

CAMINO DE LA PLAZA

Unknown

Over: INTERSTATE 5

11-SD-005-R0.31-SD, San Diego, CA

Built 1973 ADT: 56,000

S/B 805 MAINLINE

Unknown

Over: INTERSTATE 5

11-SD-805-0.50-SD, San Diego, CA

Built 1973 ADT: 56,000

MTDB LRT & SDIV RR

Unknown

Over: INTERSTATE 805

11-SD-805-12.62-SD, San Diego, CA

Built 1975 ADT: 216,000

MARKET-N805 ONRAMP

Unknown

Over: N805-E&W94 CONNECTOR RMP

11-SD-805-13.10-SD, San Diego, CA

Built 1975 ADT: 31,500

S805-MARKET ST OFF

Unknown

Over: W&E94-S805 CONNECTOR RMP

11-SD-805-13.14-SD, San Diego, CA

Built 1975 ADT: 34,500

S805-E94 CONNECTOR

Unknown

Over: HOME AV, HOME AV-S805 ON

11-SD-805-13.85-SD, San Diego, CA

Built 1974 ADT: 6,700

W54-S5 CONNECTOR

Unknown

Over: I 5, SWEETWATER,MTDB LRT

11-SD-054-0.01L-NATC, San Diego, CA

Built 1991 ADT: 177,000

N5-S75 CONNECTOR

Unknown

Over: I 5,LOGAN AV,N5-KEARNEY

11-SD-005-R13.90-SD, San Diego, CA

Built 1972 ADT: 3,000

E75-S5 CONNECTOR R

Unknown

Over: LOGAN AVE

11-SD-075-R22.10-SD, San Diego, CA

Built 1969 ADT: 3,000

SAMPSON ST

Unknown

Over: INTERSTATE 5

11-SD-005-R13.76-SD, San Diego, CA

Built 1972 ADT: 160,000

INTERSTATE 905 WB

Unknown

Over: PICADOR BLVD

11-SD-905-4.41-SD, San Diego, CA

Built 1976 ADT: 17,200

INTERSTATE 905 EB

Unknown

Over: PICADOR BLVD

11-SD-905-4.41-SD, San Diego, CA

Built 1976 ADT: 17,200

INTERSTATE 905 WB

Unknown

Over: DEL SUR BLVD

11-SD-905-4.16-SD, San Diego, CA

Built 1976 ADT: 2,230

INTERSTATE 905 EB

Unknown

Over: DEL SUR BLVD

11-SD-905-4.16-SD, San Diego, CA

Built 1976 ADT: 2,230

INTERSTATE 905 WB

Unknown

Over: BEYER BLVD

11-SD-905-3.82-SD, San Diego, CA

Built 1976 ADT: 15,900

INTERSTATE 905 EB

Unknown

Over: BEYER BLVD

11-SD-905-3.82-SD, San Diego, CA

Built 1976 ADT: 15,900

E905-BEYER BL OFF

Unknown

Over: BEYER BLVD

11-SD-905-3.82-SD, San Diego, CA

Built 1976 ADT: 15,900

INTERSTATE 805 SB

Unknown

Over: DEL SOL BOULEVARD

11-SD-805-2.17-SD, San Diego, CA

Built 1975 ADT: 9,470

INTERSTATE 805 NB

Unknown

Over: DEL SOL BOULEVARD

11-SD-805-2.17-SD, San Diego, CA

Built 1975 ADT: 9,470

PEDESTRIAN WALKWAY

Unknown

Over: INTERSTATE 5

11-SD-005-R13.99-SD, San Diego, CA

Built 1972 ADT: 160,000

STATE ROUTE 75

Unknown

Over: SAN DIEGO BAY, HARBOR DR

11-SD-075-R20.49-SD, San Diego, CA

Built 1969 ADT: 8,273

BALBOA AVE

Unknown

Over: STATE ROUTE 163

11-SD-163-8.01-SD, San Diego, CA

Built 1975 ADT: 147,000

H STREET

Unknown

Over: I 805, ON & OFF-RAMP

11-SD-805-7.16-CHV, San Diego, CA

Built 1975 ADT: 13,100

BALTIMORE DR

Unknown

Over: INTERSTATE 8

11-SD-008-10.78-LMSA, San Diego, CA

Built 1973 ADT: 175,000

PEDESTRIAN WALKWAY

Unknown

Over: INTERSTATE 805 & RAMPS

11-SD-805-0.84-SD, San Diego, CA

Built 1975 ADT: 10,800

ESCONDIDO HWY

Unknown

Over: ROUTE 15

11-SD-015-R43.28, San Diego, CA

Built 1978 ADT: 125,000

WEST LILAC ROAD

Unknown

Over: ROUTE 15

11-SD-015-R44.24, San Diego, CA

Built 1978 ADT: 120,000

STATE ROUTE 76

Unknown

Over: INTERSTATE 15

11-SD-076-R17.26-ESD, San Diego, CA

Built 1981 ADT: 113,000

PALA MESA DRIVE

Unknown

Over: ROUTE 15

11-SD-015-R47.17, San Diego, CA

Built 1981 ADT: 22,000

Showing 5,501-5,550 of 27,040 bridges

Related

All states → | National rankings → | Understanding conditions → | SD bridges explained →
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.