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

17TH STREET

Unknown

Over: E ST-S5 ON RAMP

11-SD-005-R15.11-SD, San Diego, CA

Built 1928 ADT: 4,800

AERO DRIVE

Unknown

Over: ROUTE 15

11-SD-015-R8.37-SD, San Diego, CA

Built 1981 ADT: 243,000

BALBOA AVE WB

Unknown

Over: ROUTE15

11-SD-015-R9.25-SD, San Diego, CA

Built 1982 ADT: 207,000

BALBOA AVE EB

Unknown

Over: ROUTE15

11-SD-015-R9.23-SD, San Diego, CA

Built 1982 ADT: 207,000

N15-BALBOA WB OFF

Unknown

Over: I-15,BALBOA,MURPHY CYN

11-SD-015-R9.27-SD, San Diego, CA

Built 1982 ADT: 8,100

BALBOA AVE-S15 ON

Unknown

Over: MURPHY CANYON ROAD

11-SD-015-R9.22-SD, San Diego, CA

Built 1982 ADT: 2,630

BALBOA AVE WB

Unknown

Over: MURPHY CANYON RD

11-SD-000-0.00-SD, San Diego, CA

Built 1982 ADT: 2,630

BALBOA AVE EB

Unknown

Over: MURPHY CANYON RD

11-SD-000-0.00-SD, San Diego, CA

Built 1982 ADT: 2,630

N15-W8 CONNECTOR

Unknown

Over: I-15, I-8, RAMP & LOCAL

11-SD-015-R6.01-SD, San Diego, CA

Built 1986 ADT: 13,400

INTERSTATE 15

Unknown

Over: CAMINO DEL RIO SOUTH

11-SD-015-R6.03-SD, San Diego, CA

Built 1986 ADT: 13,400

E8-S15 CONNECTOR

Unknown

Over: CAMINO DEL RIO SOUTH

11-SD-008-5.62-SD, San Diego, CA

Built 1986 ADT: 11,400

S15-E/W8 CONNECTOR

Unknown

Over: I-15 & I-8

11-SD-015-R6.06-SD, San Diego, CA

Built 1984 ADT: 300

S15-CAMINO DEL RIO

Unknown

Over: I 8 & CONNECTOR RMPS

11-SD-015-R6.12-SD, San Diego, CA

Built 1986 ADT: 240,000

N15-E8 CONNECTOR

Unknown

Over: CAMINO DEL RIO SO, RAMPS

11-SD-015-R6.00-SD, San Diego, CA

Built 1986 ADT: 13,400

W8-N15 CONNECTOR

Unknown

Over: FAIRMOUNT AVE-W8 ON-RAMP

11-SD-008-5.79-SD, San Diego, CA

Built 1984 ADT: 25,000

INTERSTATE 15 SB

Unknown

Over: GOPHER CANYON ROAD

11-SD-015-R40.85, San Diego, CA

Built 1980 ADT: 125,000

INTERSTATE 15 NB

Unknown

Over: GOPHER CANYON ROAD

11-SD-015-R40.84, San Diego, CA

Built 1980 ADT: 125,000

DEER SPRINGS RD

Unknown

Over: ROUTE 15

11-SD-015-R36.64, San Diego, CA

Built 1979 ADT: 125,000

INTERSTATE 15 SB

Unknown

Over: NUTMEG STREET

11-SD-015-R34.22-ESD, San Diego, CA

Built 1978 ADT: 2,500

INTERSTATE 15 NB

Unknown

Over: NUTMEG STREET

11-SD-015-R34.22-ESD, San Diego, CA

Built 1978 ADT: 2,500

MISSION ROAD

Unknown

Over: ROUTE 15

11-SD-015-R50.59, San Diego, CA

Built 1983 ADT: 140,000

RAINBOW VLY BLVD

Unknown

Over: ROUTE 15

11-SD-015-R54.07, San Diego, CA

Built 1985 ADT: 140,000

KEARNY VILLA ROAD

Unknown

Over: ROUTE 163,S163-KEARNY VI

11-SD-163-R10.84-SD, San Diego, CA

Built 1982 ADT: 5,000

STATE ROUTE 163

Unknown

Over: INTERSTATE 15

11-SD-163-R11.13-SD, San Diego, CA

Built 1982 ADT: 85,500

MIRAMAR WAY

Unknown

Over: INTERSTATE 15 & HOV

11-SD-015-M13.33-SD, San Diego, CA

Built 1982 ADT: 305,000

POMERADO ROAD

Unknown

Over: I-15, RAMPS, HOV

11-SD-015-M14.29-SD, San Diego, CA

Built 1982 ADT: 237,000

CENTRE CITY-N15

Unknown

Over: N15 - CENTRE CITY PKWY

11-SD-015-R33.94-ESD, San Diego, CA

Built 1978 ADT: 3,000

E75-N5 CONNECTOR

Unknown

Over: I 5, CONNS, STREETS

11-SD-075-R21.97-SD, San Diego, CA

Built 1969 ADT: 7,100

CLAIRMONT MESA BL

Unknown

Over: ROUTE15

11-SD-015-R10.00-SD, San Diego, CA

Built 1985 ADT: 193,000

MISSION CENTER RD

Unknown

Over: INTERSTATE 8

11-SD-008-3.04-SD, San Diego, CA

Built 1978 ADT: 219,000

CONVOY STREET

Unknown

Over: STATE ROUTE 52

11-SD-052-5.48, San Diego, CA

Built 1987 ADT: 123,000

STATE ROUTE 163

Unknown

Over: SR 52 & CONNECTORS

11-SD-163-9.63, San Diego, CA

Built 1988 ADT: 20,000

KEARNY VILLA ROAD

Unknown

Over: STATE ROUTE 52 & RAMPS

11-SD-052-6.98-SD, San Diego, CA

Built 1988 ADT: 108,000

PEDESTRIAN WALKWAY

Unknown

Over: NB FAIRMOUNT AV-E&W8 ON

11-SD-008-6.31-SD, San Diego, CA

Built 1979 ADT: 31,000

INTERSTATE 15 SB

Unknown

Over: CAMINO DEL NORTE

11-SD-015-M21.92-SD, San Diego, CA

Built 1982 ADT: 34,700

INTERSTATE 15 NB

Unknown

Over: CAMINO DEL NORTE

11-SD-015-M21.92-SD, San Diego, CA

Built 1982 ADT: 34,700

AMMO ROAD

Unknown

Over: ROUTE 15

11-SD-015-M12.96-SD, San Diego, CA

Built 1982 ADT: 303,000

E8-N67 CONNECTOR

Unknown

Over: I 8 & SR 67, CONNECTORS

11-SD-008-15.62-ECJ, San Diego, CA

Built 1985 ADT: 165,000

S5-S75 CONNECTOR

Unknown

Over: CESAR,LOGAN,NATIONAL,NE

11-SD-005-R14.16-SD, San Diego, CA

Built 1969 ADT: 1,000

H AVENUE

Unknown

Over: ROUTE 15

11-SD-015-M11.46-SD, San Diego, CA

Built 1985 ADT: 191,000

DEL LAGO\BEETHOVEN

Unknown

Over: INTERSTATE 15 W/HOV

11-SD-015-M27.27-ESD, San Diego, CA

Built 1985 ADT: 231,000

S15&56-S15 HOV CON

Unknown

Over: I 15 SB

11-SD-056-8.92-SD, San Diego, CA

Built 1986 ADT: 98,000

N15 HOV-N15&W56 CO

Unknown

Over: INTERSTATE 15 NB

11-SD-015-M19.03, San Diego, CA

Built 1986 ADT: 115,000

S5-E54 CONNECTOR

Unknown

Over: I 5, SWEETWATER,MTDB LRT

11-SD-005-9.40-NATC, San Diego, CA

Built 1988 ADT: 154,000

E78-S15 CONNECTOR

Unknown

Over: MISSION AVE

11-SD-078-R16.49-ESD, San Diego, CA

Built 1977 ADT: 25,700

E&W54-N805 CONNECT

Unknown

Over: EUCLID AVENUE

11-SD-054-1.83, San Diego, CA

Built 1974 ADT: 7,200

STATE ROUTE 125 SB

Unknown

Over: I 8 & CONNECTORS

11-SD-125-R15.35-LMSA, San Diego, CA

Built 1993 ADT: 5,000

STATE ROUTE 125 NB

Unknown

Over: INTERSTATE 8 & RAMPS

11-SD-125-R15.35-LMSA, San Diego, CA

Built 1990 ADT: 218,000

E8-S125 CONNECTOR

Unknown

Over: LA MESA BL & S125-GRSMNT

11-SD-008-11.94-LMSA, San Diego, CA

Built 1990 ADT: 2,600

W8-S125 CONNECTOR

Unknown

Over: I 8 & SR 125, & CONNS

11-SD-008-12.32-LMSA, San Diego, CA

Built 1989 ADT: 2,600

Showing 5,551-5,600 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.