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

W4-N160 CONNECTOR

Good

Over: UPRR TRACKS

04-CC-160-L0.43R-ANT, Contra Costa, CA

Built 2016 Load: 32.4 t ADT: 11,400

STATE ROUTE 4

Good

Over: GRAYSON CREEK

04-CC-004-12.89, Contra Costa, CA

Built 2021 Load: 32.4 t ADT: 82,600

INTERSTATE RTE 580

Good

Over: STEGE DRAIN

04-CC-580-1.17-RCH, Contra Costa, CA

Built 2022 Load: 32.4 t ADT: 92,300

ESCOBAR ST

Good

Over: ARROYO DEL HAMBRE

AT CASTRO STREET, Contra Costa, CA

Built 1987 Load: 32.4 t ADT: 4,900

MARKET ST

Good

Over: PINE CREEK

AT CLAYTON ST, Contra Costa, CA

Built 1972 Load: 32.4 t ADT: 16,169

YGNACIO VALLEY RD

Good

Over: WALNUT CREEK

0.8 MI E OF I 680, Contra Costa, CA

Built 1975 Load: 32.4 t ADT: 65,100

BAILEY RD

Good

Over: CONTRA COSTA CANAL

AT SR 4, Contra Costa, CA

Built 1969 Load: 32.4 t ADT: 16,200

DELTA ROAD

Good

Over: ROCK SLOUGH

3 MI E KNIGHTSEN, Contra Costa, CA

Built 2001 Load: 32.4 t ADT: 532

EL PORTAL AVE

Good

Over: SAN RAMON CREEK

0.06 MI NE DANVILLE BLVD, Contra Costa, CA

Built 1989 Load: 32.4 t ADT: 600

CAMINO DIABLO

Good

Over: KELLOGG CREEK

0.2 MI E VASCO RD, Contra Costa, CA

Built 1988 Load: 32.4 t ADT: 1,462

DEER VALLEY RD

Good

Over: MARSH CREEK

0.3 MI N MARSH CREEK RD, Contra Costa, CA

Built 1991 Load: 32.4 t ADT: 2,400

HOUGH AVE

Good

Over: LAFAYETTE CREEK

0.3 MI S MOUNT DIABLO BLV, Contra Costa, CA

Built 1986 Load: 32.4 t ADT: 2,000

NICHOLS RD

Good

Over: UP RR BNSF RY & AMTRAK

0.3 MI N PORT CHICAGO HY, Contra Costa, CA

Built 1991 Load: 32.4 t ADT: 485

MARINA VISTA AVE

Good

Over: ARROYO DEL HAMBRE

AT CASTRO ST, Contra Costa, CA

Built 1989 Load: 32.4 t ADT: 4,500

HILLCREST AVE

Good

Over: CONTRA COSTA CANAL

1.6 MI S SH 4, Contra Costa, CA

Built 1990 Load: 32.4 t ADT: 9,500

EMPIRE AVE

Good

Over: CONTRA COSTA CANAL

0.01 MI N LAUREL RD, Contra Costa, CA

Built 1994 Load: 32.4 t ADT: 14,901

DIABLO SHADOW DR

Good

Over: PINE CREEK

0.1 MI E OAK GROVE RD, Contra Costa, CA

Built 1975 Load: 32.4 t ADT: 1,900

VALLEY VISTA RD

Good

Over: PINE CREEK

0.1 MI E OAK GROVE RD, Contra Costa, CA

Built 1989 Load: 32.4 t ADT: 2,400

SUNSHINE DR

Good

Over: PINE CREEK

0.2 MI NE MEADOW LN, Contra Costa, CA

Built 1982 Load: 32.4 t ADT: 500

VASCO ROAD

Good

Over: BRUSHY CREEK

7.1 MI S/O WALNUT BLVD, Contra Costa, CA

Built 1996 Load: 32.4 t ADT: 19,806

VASCO ROAD

Good

Over: BRUSHY CREEK

5.1 MI S WALNUT BLVD, Contra Costa, CA

Built 1996 Load: 32.4 t ADT: 19,806

VASCO ROAD

Good

Over: UNIMAN/FRISK CREEK

3.4 MI S WALNUT BLVD, Contra Costa, CA

Built 1996 Load: 32.4 t ADT: 19,806

VASCO ROAD

Good

Over: KELLOGG CREEK

0.1 MI S WALNUT BLVD, Contra Costa, CA

Built 1996 Load: 32.4 t ADT: 17,424

BOLLINGER CANYON

Good

Over: EAST BRANCH ALAMO CREEK

JUST S OF HARCOURT RD, Contra Costa, CA

Built 2006 Load: 32.4 t ADT: 5,000

WATERMILL ROAD

Good

Over: EAST BRANCH ALAMO CREEK

JUST S. OF HARCOURT WAY, Contra Costa, CA

Built 2006 Load: 32.4 t ADT: 500

WINDEMERE PARKWAY

Good

Over: EAST BRANCH ALAMO CREEK

0.6 MI E. BOLLINGER PKWY, Contra Costa, CA

Built 2006 Load: 32.4 t ADT: 2,000

WINDEMERE PARKWAY

Good

Over: ALAMO CREEK SOUTH FORK

1 MI E. BOLLINGER PKWY, Contra Costa, CA

Built 2005 Load: 32.4 t ADT: 2,000

BOLLINGER CANYON

Good

Over: MAIN BRANCH ALAMO CREEK

1 MI E CROW CANYON RD, Contra Costa, CA

Built 2006 Load: 32.4 t ADT: 5,000

BOLLINGER CANYON

Good

Over: WEST BRANCH ALAMO CREEK

0.1 MI W. OF DOUGHERTY RD, Contra Costa, CA

Built 2005 Load: 32.4 t ADT: 2,760

BOLLINGER CANYON R

Good

Over: E BRANCH PKWY

.1 MI S OF E BRANCH PKWY, Contra Costa, CA

Built 2005 Load: 32.4 t ADT: 5,000

WINDEMERE PARKWAY

Good

Over: CAMINO TASSAJARA

.3 MI W. CAMINO TASSAJARA, Contra Costa, CA

Built 2007 Load: 32.4 t ADT: 2,000

CASABLANCA ROAD

Good

Over: SHADOW CREEK

.1 MI W OF CREEKVIEW PL., Contra Costa, CA

Built 2006 Load: 32.4 t ADT: 1,000

SOMERSVILLE ROAD

Good

Over: CONTRA COSTA CANAL

0.35 MI SW BUCHANAN RD, Contra Costa, CA

Built 2009 Load: 32.4 t ADT: 13,686

DOUGHERTY ROAD

Good

Over: WEST BRANCH ALAMO CREEK

0.2 MI S. OF BOLLINGER CY, Contra Costa, CA

Built 2015 Load: 32.4 t ADT: 2,760

SUNSET ROAD

Good

Over: MARSH CREEK

1/10 MI E BRENTWOOD BLVD, Contra Costa, CA

Built 2005 Load: 32.4 t ADT: 5,800

SAND CREEK ROAD

Good

Over: MARSH CREEK

AT OHARA AVE, Contra Costa, CA

Built 2002 Load: 32.4 t ADT: 20,000

ORWOOD ROAD

Good

Over: WERNER DREDGER CUT

2 MI. E. OF BYRON HWY, Contra Costa, CA

Built 2016 Load: 32.4 t ADT: 1,164

SAN PABLO AVE

Good

Over: RODEO CREEK

AT PARKER STREET, Contra Costa, CA

Built 2015 Load: 32.4 t ADT: 3,294

MARSH CREEK ROAD

Good

Over: MARSH CREEK

0.2 MI E OF ASPARA DRIVE, Contra Costa, CA

Built 2018 Load: 32.4 t ADT: 5,637

CO. JAIL ACCESS RD

Good

Over: MARSH CREEK

0.25 MI. S. MARSH CR. RD, Contra Costa, CA

Built 2014 Load: 32.4 t ADT: 150

CANAL ROAD

Good

Over: CONTRA COSTA CANAL

0.5 MI. W OF BAILEY ROAD, Contra Costa, CA

Built 2018 Load: 32.4 t ADT: 3,010

13TH ST

Good

Over: WILDCAT CREEK

0.1 MI S OF BROOKSIDE DR., Contra Costa, CA

Built 1994 Load: 32.4 t ADT: 25,106

BANCROFT ROAD

Good

Over: CONTRA COSTA CANAL

0.2 MI S TREAT BLVD, Contra Costa, CA

Built 1968 Load: 32.4 t ADT: 29,800

GREGORY LN

Good

Over: GRAYSON CREEK

0.4 MI W CONTRA COSTA BL, Contra Costa, CA

Built 1959 Load: 32.4 t ADT: 10,000

TREAT BLVD

Good

Over: CONTRA COSTA CANAL

0.1 MI E SAN MIGUEL RD, Contra Costa, CA

Built 1970 Load: 32.4 t ADT: 18,245

DETROIT AVE

Good

Over: PINE CREEK

AT WHITMAN RD, Contra Costa, CA

Built 1960 Load: 32.4 t ADT: 4,493

CHILPACINGO PARKWY

Good

Over: GRAYSON CREEK

0.1 MI W CONTRA COSTA BL, Contra Costa, CA

Built 1969 Load: 32.4 t ADT: 10,810

CHRISTEN DR

Good

Over: CONTRA COSTA CANAL

0.04 MI S THIRD AVE, Contra Costa, CA

Built 1990 Load: 32.4 t ADT: 3,200

COWELL ST

Good

Over: GALINDO CREEK

0.05 MI S BABEL LANE, Contra Costa, CA

Built 1978 Load: 32.4 t ADT: 9,000

VIEWPOINTE BLVD

Good

Over: RODEO CREEK

0.1 MI E WILLOW AVE, Contra Costa, CA

Built 1974 Load: 32.4 t ADT: 8,599

Showing 17,301-17,350 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.