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

SB INTERSTATE 280

Unknown

Over: 7TH STREET, ON-RAMP

04-SCL-280-R1.55-SJS, Santa Clara, CA

Built 1972 ADT: 11,800

NB INTERSTATE 280

Unknown

Over: 7TH STREET

04-SCL-280-R1.55-SJS, Santa Clara, CA

Built 1972 ADT: 11,800

10TH ST-NB280 RAMP

Unknown

Over: 7TH STREET, OFF-RAMP

04-SCL-280-R1.55-SJS, Santa Clara, CA

Built 1972 ADT: 13,200

INTERSTATE 280

Unknown

Over: 10TH & 11TH STREET

04-SCL-280-R1.29-SJS, Santa Clara, CA

Built 1972 ADT: 15,000

INTERSTATE 280

Unknown

Over: MCLAUGHLIN AVENUE

04-SCL-280-R0.36-SJS, Santa Clara, CA

Built 1972 ADT: 21,700

SB280-NB101 CONN

Unknown

Over: U.S. HIGHWAY 101

04-SCL-280-R0.01-SJS, Santa Clara, CA

Built 1974 ADT: 9,950

S680-N280

Unknown

Over: U.S. HIGHWAY 101

04-SCL-680-M0.01-SJS, Santa Clara, CA

Built 1974 ADT: 188,000

S280-N680

Unknown

Over: U.S. HIGHWAY 101

04-SCL-680-M0.01-SJS, Santa Clara, CA

Built 1974 ADT: 188,000

INTERSTATE 680

Unknown

Over: SOUTH KING ROAD

04-SCL-680-M0.38-SJS, Santa Clara, CA

Built 1974 ADT: 850

INTERSTATE 680 SB

Unknown

Over: JACKSON AVE

04-SCL-680-M1.19-SJS, Santa Clara, CA

Built 1974 ADT: 1,500

INTERSTATE 680 NB

Unknown

Over: JACKSON AVE

04-SCL-680-M1.19-SJS, Santa Clara, CA

Built 1974 ADT: 1,050

N680-E&W130

Unknown

Over: CAPITOL EXP,CAPITOL-N680

04-SCL-680-M1.41-SJS, Santa Clara, CA

Built 1974 ADT: 5,000

I-680 ON/OFF-RAMP

Unknown

Over: CAPITOL EXPRESSWAY

04-SCL-680-M1.41-SJS, Santa Clara, CA

Built 1974 ADT: 1,500

INTERSTATE 680 SB

Unknown

Over: CAPITOL EXPRESSWAY

04-SCL-680-M1.41-SJS, Santa Clara, CA

Built 1974 ADT: 5,000

INTERSTATE 680 NB

Unknown

Over: CAPITOL EXPRESSWAY

04-SCL-680-M1.41-SJS, Santa Clara, CA

Built 1974 ADT: 1,600

ALUM ROCK AVE RAMP

Unknown

Over: S680-CAPITOL XPWY RAMP

04-SCL-680-M1.55-SJS, Santa Clara, CA

Built 1974 ADT: 10,100

ALUM ROCK AVE

Unknown

Over: INTERSTATE 680

04-SCL-680-M1.74-SJS, Santa Clara, CA

Built 1974 ADT: 14,400

MADDEN AVE POC

Unknown

Over: INTERSTATE 680

04-SCL-680-M2.00-SJS, Santa Clara, CA

Built 1974 ADT: 160,000

MCKEE ROAD

Unknown

Over: INTERSTATE 680

04-SCL-680-M2.38-SJS, Santa Clara, CA

Built 1974 ADT: 175,000

MABURY ROAD

Unknown

Over: INTERSTATE 680

04-SCL-680-M3.14-SJS, Santa Clara, CA

Built 1974 ADT: 175,000

INTERSTATE 680

Unknown

Over: HOSTETTER ROAD

04-SCL-680-M4.78-SJS, Santa Clara, CA

Built 1974 ADT: 90,000

INTERSTATE 680

Unknown

Over: CAPITOL AVENUE

04-SCL-680-M5.07-SJS, Santa Clara, CA

Built 1974 ADT: 1,500

CROPLEY AVENUE

Unknown

Over: INTERSTATE 680

04-SCL-680-M5.54-SJS, Santa Clara, CA

Built 1974 ADT: 175,000

YOSEMITE DRIVE

Unknown

Over: INTERSTATE 680

04-SCL-680-M6.98-MPS, Santa Clara, CA

Built 1974 ADT: 175,000

INTERSTATE 680

Unknown

Over: SR 237 (CALAVERAS BLVD)

04-SCL-680-M7.63-MPS, Santa Clara, CA

Built 1971 ADT: 126,000

INTERSTATE 680

Unknown

Over: JACKLIN ROAD

04-SCL-680-M8.50-MPS, Santa Clara, CA

Built 1971 ADT: 960

U.S. HWY 101 (SB)

Unknown

Over: MONTEREY ROAD

04-SCL-101-R4.94, Santa Clara, CA

Built 1973 ADT: 5,000

U.S. HWY 101 (NB)

Unknown

Over: MONTEREY ROAD

04-SCL-101-R4.94, Santa Clara, CA

Built 1973 ADT: 5,000

PEDESTRIAN WALKWAY

Unknown

Over: STATE ROUTE 17

04-SCL-017-13.11-CMB, Santa Clara, CA

Built 1966 ADT: 184,800

STATE ROUTE 87

Unknown

Over: GUADALUPE RIVER & ROADS

04-SCL-087-5.67-SJS, Santa Clara, CA

Built 1978 ADT: 8,270

STATE ROUTE 87

Unknown

Over: PARK AVENUE

04-SCL-087-5.56-SJS, Santa Clara, CA

Built 1978 ADT: 10,900

STATE ROUTE 87

Unknown

Over: UP RR, AMTRAK, STREETS

04-SCL-087-6.27-SJS, Santa Clara, CA

Built 1988 ADT: 1,000

STATE ROUTE 87

Unknown

Over: N ALMADEN BOULEVARD

04-SCL-087-5.99-SJS, Santa Clara, CA

Built 1988 ADT: 1,670

OFF-RAMP/I280-N87

Unknown

Over: N ALMADEN BOULEVARD

04-SCL-087-6.00-SJS, Santa Clara, CA

Built 1988 ADT: 1,670

VIRGINIA STREET

Unknown

Over: STATE ROUTE 87

04-SCL-087-4.86-SJS, Santa Clara, CA

Built 1972 ADT: 130,000

STATE ROUTE 87

Unknown

Over: JULIAN STREET

04-SCL-087-6.10-SJS, Santa Clara, CA

Built 1988 ADT: 22,500

PEDESTRIAN WALKWAY

Unknown

Over: INTERSTATE 280

04-SCL-280-R4.24-SJS, Santa Clara, CA

Built 1972 ADT: 5,500

PEDESTRIAN TRAFFIC

Unknown

Over: U.S. HIGHWAY 101 & RAMPS

04-SCL-101-52.01-PA, Santa Clara, CA

Built 1968 ADT: 2,000

CHURCH AVENUE

Unknown

Over: U.S. HIGHWAY 101

04-SCL-101-R11.15, Santa Clara, CA

Built 1972 ADT: 112,000

SR 152 (10TH ST)

Unknown

Over: U.S. HIGHWAY 101

04-SCL-152-R9.92-GIL, Santa Clara, CA

Built 1972 ADT: 52,000

6TH STREET

Unknown

Over: U.S. HIGHWAY 101

04-SCL-101-R6.58-GIL, Santa Clara, CA

Built 1972 ADT: 52,000

U.S. HWY 101 (SB)

Unknown

Over: STATE ROUTE 152

04-SCL-101-R7.52-GIL, Santa Clara, CA

Built 1973 ADT: 22,550

U.S. HWY 101 (NB)

Unknown

Over: STATE ROUTE 152

04-SCL-101-R7.52-GIL, Santa Clara, CA

Built 1973 ADT: 22,550

BUENA VISTA AVENUE

Unknown

Over: U.S. HIGHWAY 101

04-SCL-101-R9.13, Santa Clara, CA

Built 1972 ADT: 110,000

MASTEN AVENUE

Unknown

Over: U.S. HIGHWAY 101

04-SCL-101-R10.27, Santa Clara, CA

Built 1972 ADT: 110,000

SAN MARTIN AVENUE

Unknown

Over: U.S. HIGHWAY 101

04-SCL-101-R12.46, Santa Clara, CA

Built 1972 ADT: 112,000

TENNANT AVENUE WB

Unknown

Over: U.S. HIGHWAY 101

04-SCL-101-R15.07, Santa Clara, CA

Built 1972 ADT: 112,000

TENNANT AVENUE EB

Unknown

Over: U.S. HIGHWAY 101

04-SCL-101-R15.05, Santa Clara, CA

Built 2012 ADT: 11,200

WB EAST DUNNE AVE

Unknown

Over: U.S. HIGHWAY 101

04-SCL-101-R16.01-MGH, Santa Clara, CA

Built 1972 ADT: 112,000

EAST MAIN AVENUE

Unknown

Over: U.S. HIGHWAY 101

04-SCL-101-R16.78-MGH, Santa Clara, CA

Built 1972 ADT: 112,000

Showing 6,651-6,700 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.