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

N. MILLBROOK AVE

Fair

Over: MILL DITCH

AT MCKINLEY AVE, Fresno, CA

Built 1997 Load: 32.4 t ADT: 5,304

N. ARMSTRONG AVE

Fair

Over: GOULD CANAL

0.2 MI S/O ASHLAN AVE, Fresno, CA

Built 1997 Load: 32.4 t ADT: 4,800

LOS GATOS ROAD

Fair

Over: LOS GATOS CREEK

17.25 MI W DERRICK BLVD, Fresno, CA

Built 1995 Load: 32.4 t ADT: 50

LOS GATOS ROAD

Fair

Over: LOS GATOS CREEK

12.16 MI W OF DERRICK BL, Fresno, CA

Built 1995 Load: 32.4 t ADT: 200

COALINGA MIN SP RD

Fair

Over: HOT SPRINGS CREEK

2.9 MI NORTH OF SR 198, Fresno, CA

Built 1995 Load: 32.4 t ADT: 200

S CEDAR AVE

Fair

Over: LIBERTY DITCH

0.08 MI N OF COLEMAN AVE, Fresno, CA

Built 1999 Load: 32.4 t ADT: 500

WATTS VALLEY ROAD

Fair

Over: WATTS CREEK TRIBUTARY

0.01 MI W OF MAXON ROAD, Fresno, CA

Built 1996 Load: 32.4 t ADT: 300

SYCAMORE ROAD

Fair

Over: LITTLE DRY CREEK

0.17 MI E OF WATTS VALLEY, Fresno, CA

Built 1996 Load: 32.4 t ADT: 200

N PIEDRA ROAD

Fair

Over: UNNAMED DITCH

5 MI NE OF SR 180, Fresno, CA

Built 1973 Load: 32.4 t ADT: 2,400

ROEDING DR

Fair

Over: DRY CREEK CANAL

0.1 MI SOUTH OF SR 180, Fresno, CA

Built 2003 Load: 32.4 t ADT: 862

POWERHOUSE ROAD

Fair

Over: SAN JOAQUIN RIVER

AT MADERA COUNTY LINE, Fresno, CA

Built 2001 Load: 32.4 t ADT: 300

N LEONARD AVE

Fair

Over: REDBANK SLOUGH

0.1 MI SOUTH OF SHIELDS, Fresno, CA

Built 1997 Load: 32.4 t ADT: 500

S ZEDIKER AVE

Fair

Over: COLE SLOUGH CANAL

AT SOUTH AVE, Fresno, CA

Built 2001 Load: 32.4 t ADT: 700

N FOWLER AVE

Fair

Over: BIG DRY CREEK DIVERSION

0.3 MI NORTH OF COPPER AV, Fresno, CA

Built 2001 Load: 32.4 t ADT: 200

W SHAW LANE

Fair

Over: W SHAW AVE

0.2 MI EAST OF MARKS AVE, Fresno, CA

Built 2002 Load: 32.4 t ADT: 600

N ACADEMY AVE

Fair

Over: ENTERPRISE CANAL

0.3 MI NORTH OF ASHLAN AV, Fresno, CA

Built 2003 Load: 32.4 t ADT: 2,500

N TEMPERANCE AVE

Fair

Over: ENTERPRISE CANAL

0.1 MI SOUTH OF NEES AVE, Fresno, CA

Built 2003 Load: 32.4 t ADT: 7,800

S ACADEMY AVE

Fair

Over: FOWLER SWITCH CANAL

AT (N/O) CALIFORNIA AVE, Fresno, CA

Built 2009 Load: 32.4 t ADT: 8,800

S ACADEMY AVE

Fair

Over: KINGSBURG BRANCH CANAL

0.3 MI N OF PARLIER AVE, Fresno, CA

Built 2009 Load: 32.4 t ADT: 5,500

HAMMOND AVE

Fair

Over: DRY CREEK CANAL

JUST WEST OF CLARK ST, Fresno, CA

Built 2005 Load: 32.4 t ADT: 1,934

N TEMPERANCE AVE

Fair

Over: GOULD CANAL

0.2 M N/O DAKOTA AVE, Fresno, CA

Built 2010 Load: 32.4 t ADT: 4,200

MANNING AVE

Fair

Over: KINGS RIVER

0.5 MI WEST OF REED AVE, Fresno, CA

Built 2015 Load: 32.4 t ADT: 20,125

WEST ASHLAN AVE

Fair

Over: GOLDEN STATE RAIL WEBER

0.15 MILES EAST OF RTE 99, Fresno, CA

Built 2018 Load: 32.4 t ADT: 37,000

SHEPHERD AVE

Fair

Over: DRY CREEK

INTERSECTION N FOWLER AVE, Fresno, CA

Built 2014 Load: 32.4 t ADT: 9,000

STATE ROUTE 156

Fair

Over: WASHINGTON STREET

05-SBT-156-2.72, San Benito, CA

Built 1995 Load: 32.4 t ADT: 13,000

E129-N101 CHITTEN

Fair

Over: SAN JUAN CREEK

05-SBT-101-R4.90, San Benito, CA

Built 1967 Load: 32.4 t ADT: 7,200

STATE ROUTE 156

Fair

Over: UP RR BRANCH

05-SBT-156-R10.47, San Benito, CA

Built 1997 Load: 32.4 t ADT: 13,800

SAN JUAN ROAD

Fair

Over: U.S. HIGHWAY 101 CREEK

05-SBT-101-0.13, San Benito, CA

Built 2014 Load: 32.4 t ADT: 8,606

PANOCHE ROAD

Fair

Over: TRES PINOS CREEK

8 MI EAST OF SH 25, San Benito, CA

Built 1987 Load: 32.4 t ADT: 800

SHORE ROAD

Fair

Over: TEQUISQUITA SLOUGH OVFL

WEST OF FRAZER LAKE ROAD, San Benito, CA

Built 1950 Load: 32.4 t ADT: 6,500

PANOCHE ROAD

Fair

Over: TRES PINOS CREEK

9 MI SE/O SR 25, San Benito, CA

Built 1995 Load: 32.4 t ADT: 800

FRAZIER LAKE ROAD

Fair

Over: MILLERS CANAL

1.2 MILE N OF SHORE ROAD, San Benito, CA

Built 1995 Load: 32.4 t ADT: 4,880

SAN FELIPE ROAD

Fair

Over: SANTA ANA CREEK

0.6 MI N OF SH 156, San Benito, CA

Built 1975 Load: 32.4 t ADT: 2,760

SAN FELIPE ROAD

Fair

Over: BRANCH OF SANTA ANA CRK

1.1 MI NORTH OF SH 156, San Benito, CA

Built 1975 Load: 32.4 t ADT: 2,760

NASH ROAD

Fair

Over: SAN BENITO RIVER

SW OF WESTSIDE BLVD, San Benito, CA

Built 2007 Load: 32.4 t ADT: 1,500

STATE ROUTE 1

Fair

Over: ELKHORN SLOUGH

05-MON-001-96.44, Monterey, CA

Built 1985 Load: 32.4 t ADT: 30,500

MAIN STREET

Fair

Over: US HIGHWAY 101

05-MON-101-76.97, Monterey, CA

Built 1958 Load: 32.4 t ADT: 12,500

STATE ROUTE 183

Fair

Over: STATE ROUTE 156

05-MON-183-8.99, Monterey, CA

Built 1966 Load: 32.4 t ADT: 22,400

STATE ROUTE 1 SB

Fair

Over: PEDESTRIAN WALKWAY

05-MON-001-R80.27-SNDC, Monterey, CA

Built 1968 Load: 32.4 t ADT: 29,500

BUNTE ROAD

Fair

Over: US HIGHWAY 101

05-MON-101-R35.83, Monterey, CA

Built 1969 Load: 32.4 t ADT: 200

STATE ROUTE 25

Fair

Over: LEWIS CREEK

05-MON-025-11.73, Monterey, CA

Built 1995 Load: 32.4 t ADT: 306

STATE ROUTE 68

Fair

Over: EL TORO CREEK

05-MON-068-13.30, Monterey, CA

Built 1997 Load: 32.4 t ADT: 24,200

STATE ROUTE 1

Fair

Over: HILLSIDE

05-MON-001-36.20, Monterey, CA

Built 2000 Load: 32.4 t ADT: 5,000

SAN MIGUEL CANYON

Fair

Over: U.S. HIGHWAY 101

05-MON-101-96.14, Monterey, CA

Built 2004 Load: 32.4 t ADT: 11,900

PRUNEDALE OC

Fair

Over: S101-W156 CONNECTOR RAMP

05-MON-156-T5.10, Monterey, CA

Built 2005 Load: 32.4 t ADT: 5,000

SALA ROAD

Fair

Over: US HIGHWAY 101

05-MON-101-92.19, Monterey, CA

Built 2013 Load: 32.4 t ADT: 2,000

CRAZY HORSE CANYON

Fair

Over: WETLAND

05-MON-000-0.00, Monterey, CA

Built 2013 Load: 32.4 t ADT: 4,528

N101- ON/OFF-RAMP

Fair

Over: ELKHORN SLOUGH TRIBUTARY

05-MON-101-101.29, Monterey, CA

Built 2014 Load: 32.4 t ADT: 2,500

MCGOWAN ROAD

Fair

Over: PAJARO RIVER

0.5 MI S BEACH RD, Monterey, CA

Built 1992 Load: 32.4 t ADT: 1,500

CHUALAR RIVER RD

Fair

Over: SALINAS RIVER

2.0 MI W/O SH 101, Monterey, CA

Built 1991 Load: 32.4 t ADT: 3,200

Showing 7,201-7,250 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.