State profile · Below median Poor share

California bridge safety

According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in California.

25,848
Public bridges
45.6%
Good condition
5.9%
Poor condition

California holds 25,848 public highway bridges (#4 of 52 by inventory) with a 5.91% Poor share (#28 of 52 by Poor share).

That is 5.9% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 25 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.

Inventory: FHWA NBI 2024 · last ETL August 2026

Total Bridges

25,848

Public highway bridges in California

Good Condition

45.6%

11,798 bridges rated 7-9

-4.4pp vs 50% benchmark

Poor Condition

5.9%

1,527 bridges whose lowest applicable component is rated 0-4

-1.6pp vs national avg 7.5%

California vs national bridge condition

California - Good condition share 45.6%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

California - Poor-condition share 19.7%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.

California in the national condition pattern

Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.

Inventory size and Poor-condition share are different measures: California has 25,848 bridges and a 5.9% Poor-condition share in the 2024 NBI, rank #25 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold. Scatter plot of 54 data points. 0%10%20%30%40% 0k20k40k60k Public bridges in inventory (thousands) Poor-condition share (%) CA, Public bridges in inventory (thousands): 25.8k · Poor-condition share (%): 5.91%AL, Public bridges in inventory (thousands): 16.2k · Poor-condition share (%): 3.35%AK, Public bridges in inventory (thousands): 1.7k · Poor-condition share (%): 7.89%AZ, Public bridges in inventory (thousands): 8.6k · Poor-condition share (%): 1.15%AR, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 5.43%CO, Public bridges in inventory (thousands): 9k · Poor-condition share (%): 4.82%CT, Public bridges in inventory (thousands): 4.4k · Poor-condition share (%): 4.72%DE, Public bridges in inventory (thousands): 0.9k · Poor-condition share (%): 1.26%DC, Public bridges in inventory (thousands): 0.3k · Poor-condition share (%): 1.95%FL, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 2.79%GA, Public bridges in inventory (thousands): 15.1k · Poor-condition share (%): 1.59%GU, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 12.77%HI, Public bridges in inventory (thousands): 1.2k · Poor-condition share (%): 6.53%ID, Public bridges in inventory (thousands): 4.6k · Poor-condition share (%): 4.9%IL, Public bridges in inventory (thousands): 26.9k · Poor-condition share (%): 9.35%IN, Public bridges in inventory (thousands): 19.5k · Poor-condition share (%): 5.22%IA, Public bridges in inventory (thousands): 23.7k · Poor-condition share (%): 19.16%KS, Public bridges in inventory (thousands): 24.9k · Poor-condition share (%): 5.26%KY, Public bridges in inventory (thousands): 14.5k · Poor-condition share (%): 7.37%LA, Public bridges in inventory (thousands): 12.7k · Poor-condition share (%): 11.48%ME, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 15.41%MD, Public bridges in inventory (thousands): 5.5k · Poor-condition share (%): 4.56%MA, Public bridges in inventory (thousands): 5.3k · Poor-condition share (%): 8.88%MI, Public bridges in inventory (thousands): 11.4k · Poor-condition share (%): 11.27%MN, Public bridges in inventory (thousands): 13.5k · Poor-condition share (%): 4.44%MS, Public bridges in inventory (thousands): 16.7k · Poor-condition share (%): 6.03%MO, Public bridges in inventory (thousands): 24.6k · Poor-condition share (%): 8.95%MT, Public bridges in inventory (thousands): 5.2k · Poor-condition share (%): 6.81%NE, Public bridges in inventory (thousands): 15.4k · Poor-condition share (%): 7.9%NV, Public bridges in inventory (thousands): 2.1k · Poor-condition share (%): 1.14%NH, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 7.51%NJ, Public bridges in inventory (thousands): 6.8k · Poor-condition share (%): 6.01%NM, Public bridges in inventory (thousands): 4k · Poor-condition share (%): 4.51%NY, Public bridges in inventory (thousands): 17.6k · Poor-condition share (%): 9.43%NC, Public bridges in inventory (thousands): 19.2k · Poor-condition share (%): 6.76%ND, Public bridges in inventory (thousands): 4.3k · Poor-condition share (%): 10.98%OH, Public bridges in inventory (thousands): 26.7k · Poor-condition share (%): 4.74%OK, Public bridges in inventory (thousands): 22.9k · Poor-condition share (%): 7.7%OR, Public bridges in inventory (thousands): 8.3k · Poor-condition share (%): 4.61%PA, Public bridges in inventory (thousands): 23.3k · Poor-condition share (%): 12.58%PR, Public bridges in inventory (thousands): 2.4k · Poor-condition share (%): 13.92%RI, Public bridges in inventory (thousands): 0.8k · Poor-condition share (%): 15.2%SC, Public bridges in inventory (thousands): 9.5k · Poor-condition share (%): 6.17%SD, Public bridges in inventory (thousands): 5.9k · Poor-condition share (%): 16.36%TN, Public bridges in inventory (thousands): 20.4k · Poor-condition share (%): 4.41%TX, Public bridges in inventory (thousands): 56.7k · Poor-condition share (%): 1.23%UT, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 2.91%VT, Public bridges in inventory (thousands): 2.9k · Poor-condition share (%): 2.9%VI, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 29.17%VA, Public bridges in inventory (thousands): 14.1k · Poor-condition share (%): 3.39%WA, Public bridges in inventory (thousands): 8.5k · Poor-condition share (%): 5.45%WV, Public bridges in inventory (thousands): 7.3k · Poor-condition share (%): 18.64%WI, Public bridges in inventory (thousands): 14.4k · Poor-condition share (%): 6.52%WY, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 6.51%
Inventory size and Poor-condition share are different measures: California has 25,848 bridges and a 5.9% Poor-condition share in the 2024 NBI, rank #25 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold.

California vs all states by public bridge inventory

Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges

25,848 4th of 54 higher than 50 of 54 states

States and territories, banded by public bridge inventory size

Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source FHWA National Bridge Inventory · 2024

Read the rank neighborhood for California

The highlighted point is California: 25,848 bridges and 5.91% in Poor condition, rank #25 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below California on that same Poor-share ordering:

  • Arkansas: 12,974 bridges · 5.43% Poor
  • Washington: 8,474 bridges · 5.45% Poor
  • California: 25,848 bridges · 5.91% Poor
  • New Jersey: 6,827 bridges · 6.01% Poor
  • Mississippi: 16,739 bridges · 6.03% Poor

The full national sortable table lives on the rankings page.

Material families in California

Exclusive FHWA material families across all 25,848 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.

Who maintains California’s inventory

State agency holds 48.8% of the 25,848 public highway bridges filed under California in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.

When California’s bridges were built

Pre-1950 construction accounts for 15.5% of the 25,848 bridges with a recorded original year in California. Era bands are orthogonal to the Poor-share ranking above.

Condition Distribution

California45.6%48.4%GoodFairPoor
Bridge inventory deck-condition mix - California (FHWA NBI)

Counties (58)

Alameda 658 Alpine 32 Amador 61 Butte 437 Calaveras 105 Colusa 211 Contra Costa 618 Del Norte 96 El Dorado 192 Fresno 916 Glenn 242 Humboldt 396 Imperial 444 Inyo 66 Kern 668 Kings 168 Lake 129 Lassen 108 Los Angeles 3547 Madera 247 Marin 207 Mariposa 109 Mendocino 357 Merced 528 Modoc 87 Mono 49 Monterey 377 Napa 158 Nevada 135 Orange 1164 Placer 337 Plumas 165 Riverside 1117 Sacramento 740 San Benito 76 San Bernardino 1422 San Diego 1632 San Francisco 143 San Joaquin 644 San Luis Obispo 401 San Mateo 361 Santa Barbara 418 Santa Clara 964 Santa Cruz 192 Shasta 492 Sierra 65 Siskiyou 421 Solano 373 Sonoma 609 Stanislaus 386 Sutter 121 Tehama 450 Trinity 194 Tulare 589 Tuolumne 125 Ventura 501 Yolo 271 Yuba 127

California vs nearby ranks

Adjacent states by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below California on the same metric.

AR

Arkansas

5.43% top marginal rate
Structure
Progressive
Burden @ $100K
$12,974

WA

Washington

5.45% top marginal rate
Structure
Progressive
Burden @ $100K
$8,474
Selected

CA

California

5.91% top marginal rate
Structure
Progressive
Burden @ $100K
$25,848

NJ

New Jersey

6.01% top marginal rate
Structure
Progressive
Burden @ $100K
$6,827

MS

Mississippi

6.03% top marginal rate
Structure
Progressive
Burden @ $100K
$16,739

Bridges Needing Most Attention in California

Six lowest-condition bridges in California, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

OLD COTTONWOOD CR

Poor

Over: COTTONWOOD CREEK

0.2 MI E/O COTTONWOOD CK, Siskiyou, CA

Built 1957 Load: 0.0 t ADT: 10

STATE ROUTE 211

Poor

Over: EEL RIVER

01-HUM-211-78.10, Humboldt, CA

Built 1911 Load: 0.0 t ADT: 5,300

CR 305 (MAPES RD)

Poor

Over: HARTSON SLOUGH

0.4 MI E/O RD 303, Lassen, CA

Built 1978 Load: 0.0 t ADT: 100

CR 111 (PITTVILLE)

Poor

Over: BEAVER CREEK

1.0 MI S OF CR 404, Lassen, CA

Built 1975 Load: 0.0 t ADT: 100

RD 424 (BASSETT)

Poor

Over: WILLOW CREEK

1.5 MI N OF RD A-2, Lassen, CA

Built 1960 Load: 0.0 t ADT: 120

CR417 (PUNKIN CTR)

Poor

Over: MUDDY SLOUGH NO 1

2.8 MI S OF CR A2, Lassen, CA

Built 1955 Load: 0.0 t ADT: 200

All Bridges in California

HILL STREET

Good

Over: CESAR E CHAVEZ AVENUE

AT CESAR CHAVES AVENUE, Los Angeles, CA

Built 1959 Load: 55.7 t ADT: 37,362

NUT TREE RD

Good

Over: ALAMO CREEK

1.7 MI N OF ALAMO DR, Solano, CA

Built 1979 Load: 56.1 t ADT: 19,170

HOWE AVE SB

Good

Over: LA RIVIERA DR

0.25 MI N/O US HWY 50, Sacramento, CA

Built 1969 Load: 56.1 t ADT: 29,219

HOWE AVE NB

Good

Over: LA RIVIERA DR

0.25 MI N/O US HWY 50, Sacramento, CA

Built 1969 Load: 56.1 t ADT: 30,272

HAMMER LANE

Good

Over: STATE ROUTE 99

10-SJ-099-22.92, San Joaquin, CA

Built 2007 Load: 56.1 t ADT: 18,000

ASHLEY RD

Good

Over: CALAVERAS RIVER

0.2 MI S FOPPIANO LANE, San Joaquin, CA

Built 1979 Load: 56.1 t ADT: 802

STATE ROUTE 1

Good

Over: LOS ANGELES RIVER

07-LA-001-7.11-LBCH, Los Angeles, CA

Built 1957 Load: 56.1 t ADT: 38,250

SB 110-8TH OFFRAMP

Good

Over: 8TH ST-SB 110 ON RAMP

07-LA-110-22.37-LA, Los Angeles, CA

Built 1953 Load: 56.1 t ADT: 11,200

QUEENS WAY NB

Good

Over: QUEENS WAY S ON-RAMP

0.1MI S/O SHORELINE DR, Los Angeles, CA

Built 1998 Load: 56.1 t ADT: 3,060

INTERSTATE 15 SB

Good

Over: STEWART CANYON ROAD

11-SD-015-R48.85, San Diego, CA

Built 1983 Load: 56.1 t ADT: 70,000

INTERSTATE 15 NB

Good

Over: STEWART CANYON ROAD

11-SD-015-R48.85, San Diego, CA

Built 1983 Load: 56.1 t ADT: 72,000

N163-N15 CONN HOV

Good

Over: N163-N15 CONNECTOR

11-SD-163-R11.32, San Diego, CA

Built 1986 Load: 56.1 t ADT: 1,000

INTERSTATE 5 SB

Good

Over: CNFR & OLD HWY 99W

03-COL-005-R29.22, Colusa, CA

Built 1971 Load: 56.4 t ADT: 12,500

INTERSTATE 5 NB

Good

Over: CNFR & OLD HWY 99W

03-COL-005-R29.25, Colusa, CA

Built 1971 Load: 56.4 t ADT: 15,000

OSWALD ROAD

Good

Over: SNAKE SLOUGH

AT SCHLAG ROAD, Sutter, CA

Built 1979 Load: 56.4 t ADT: 110

INTERSTATE 605

Good

Over: UP RR & LACMTA

07-LA-605-R4.71-CRTS, Los Angeles, CA

Built 1966 Load: 56.4 t ADT: 245,000

WHITSETT AVE

Good

Over: LOS ANGELES RIVER

0.1 M N/O VENTURA BLVD, Los Angeles, CA

Built 1950 Load: 56.4 t ADT: 18,649

CAMPO ROAD

Good

Over: STATE ROUTE 94

11-SD-094-R10.72R-LMSA, San Diego, CA

Built 1976 Load: 56.4 t ADT: 19,900

DOTY ROAD

Good

Over: HAT CREEK

1.0 MI NE OF SR 89, Shasta, CA

Built 1978 Load: 56.7 t ADT: 200

STATE ROUTE 4 EB

Good

Over: USN RR & KINNE BLVD

04-CC-004-R16.00-CND, Contra Costa, CA

Built 1976 Load: 56.7 t ADT: 73,000

SHEFFIELD DR

Good

Over: BUENA VISTA CREEK

0.3 MI N SAN LEANDRO LANE, Santa Barbara, CA

Built 1988 Load: 56.7 t ADT: 4,330

INTERSTATE 110

Good

Over: PICO BLVD

07-LA-110-21.76-LA, Los Angeles, CA

Built 1953 Load: 56.7 t ADT: 270,000

SEPULVEDA BLVD

Good

Over: LOS ANGELES RIVER

0.2 MI N/O FWY 101, Los Angeles, CA

Built 1928 Load: 56.7 t ADT: 37,326

HOLLYWOOD WAY

Good

Over: BURBANK WESTERN CHANNEL

0.05 MI NORTH OF I-5, Los Angeles, CA

Built 1962 Load: 56.7 t ADT: 24,000

B STREET

Good

Over: MURRIETA CREEK

0.45 MI S/O WASHINGTON AV, Riverside, CA

Built 1979 Load: 56.7 t ADT: 520

VIA PALO LINDA

Good

Over: GREEN VALLEY CREEK

0.2 MI W GREEN VALLEY RD, Solano, CA

Built 1975 Load: 57.0 t ADT: 969

SANTA FE AVENUE

Good

Over: DUTCHMAN CREEK

0.8 MI NW BCHANAN HOLO RD, Merced, CA

Built 1974 Load: 57.0 t ADT: 476

STATE ROUTE 227

Good

Over: UP RR & AMTRAK

05-SLO-227-R8.69, San Luis Obispo, CA

Built 1978 Load: 57.0 t ADT: 12,900

STATE ROUTE 27

Good

Over: TOPANGA CREEK

07-LA-027-4.20, Los Angeles, CA

Built 1934 Load: 57.0 t ADT: 15,050

STATE ROUTE 1

Good

Over: TEXACO INC SERVICE ROAD

07-LA-001-8.78-LA, Los Angeles, CA

Built 1934 Load: 57.0 t ADT: 33,000

ALONDRA BLVD

Good

Over: BNSF

100FT W/O STAGE RD, Los Angeles, CA

Built 1984 Load: 57.0 t ADT: 29,453

INTERSTATE 405

Good

Over: IMPERIAL HIGHWAY

07-LA-405-R21.22-LA, Los Angeles, CA

Built 1963 Load: 57.1 t ADT: 272,600

PASADENA AV-N5 ON

Good

Over: N5-N110 CONNECTOR RAMP

07-LA-005-20.00-LA, Los Angeles, CA

Built 1959 Load: 57.1 t ADT: 8,200

N710-E&W10 CONNECT

Good

Over: I 710 I 10 CONNS RAMONA

07-LA-710-T31.40-MONP, Los Angeles, CA

Built 1960 Load: 57.1 t ADT: 50,100

LINCOLN BLVD

Good

Over: WYMAN RAVINE

0.9 MI N PALERMO RD, Butte, CA

Built 1974 Load: 57.3 t ADT: 3,200

BUCKTOWN ROAD

Good

Over: ULATIS CREEK

1.3 MI N VACA VALLEY RD, Solano, CA

Built 1980 Load: 57.3 t ADT: 215

STATE ROUTE 104

Good

Over: MULE CREEK

10-AMA-104-R4.45-ION, Amador, CA

Built 1970 Load: 57.3 t ADT: 8,700

JOSE BASIN ROAD

Good

Over: JOSE CREEK

1.54 MI E OF ITALIAN RD, Fresno, CA

Built 1983 Load: 57.3 t ADT: 200

STATE ROUTE 58 WB

Good

Over: TVRR

06-KER-058-R55.20, Kern, CA

Built 1976 Load: 57.3 t ADT: 33,500

INTERSTATE 710

Good

Over: ATLANTIC BLVD

07-LA-710-21.92-BELL, Los Angeles, CA

Built 1957 Load: 57.3 t ADT: 217,000

ARAZ ROAD (CR S24)

Good

Over: ARAZ WASH OVERFLOW

0.45M N/O OF I-8 EXIT 166, Imperial, CA

Built 1953 Load: 57.3 t ADT: 510

LINCOLN BLVD

Good

Over: MARKHAM RAVINE

0.37 MI NW OF GLADDING RD, Placer, CA

Built 1975 Load: 57.7 t ADT: 25,000

ALEMANY BLVD SB

Good

Over: ROUTE I 280

04-SF-280-R3.28-SF, San Francisco, CA

Built 1963 Load: 57.7 t ADT: 16,000

U.S. HIGHWAY 101

Good

Over: HASKELL AVE

07-LA-101-17.50L-LA, Los Angeles, CA

Built 1958 Load: 57.7 t ADT: 229,750

U.S. HIGHWAY 101

Good

Over: HASKELL AVE

07-LA-101-17.51R-LA, Los Angeles, CA

Built 1958 Load: 57.7 t ADT: 229,750

I 5

Good

Over: FOX STREET

07-LA-005-39.70-LA, Los Angeles, CA

Built 1963 Load: 57.7 t ADT: 156,373

STATE ROUTE 90

Good

Over: BALLONA CREEK

07-LA-090-R1.04-LA, Los Angeles, CA

Built 1972 Load: 57.7 t ADT: 154,000

GILBERT ST

Good

Over: EAST TWIN CREEK CHANNEL

0.75 MI E WATERMAN AVE, San Bernardino, CA

Built 1961 Load: 57.7 t ADT: 11,361

JOHN F KENNEDY DR.

Good

Over: KITCHING STREET CHANNEL

50 W/O KITCHING STREET, Riverside, CA

Built 1984 Load: 57.7 t ADT: 11,500

US HIGHWAY 101 NB

Good

Over: BAYSHORE BLVD VIADUCT

04-SF-101-1.14-SF, San Francisco, CA

Built 1970 Load: 58.0 t ADT: 195,400

Showing 23,951-24,000 of 25,848 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.

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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

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.

What to do with this

Use California's inventory picture to drill to a county or a specific span.

  • Browse counties in California and open the highest-Poor shares first. County list
  • See where this state sits among peers on Poor-condition share. State rankings
  • Compare this state with another jurisdiction on the same measures. State compare

NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.

Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. California Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.