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

WILSON WAY

Good

Over: STOCKTON DIVERTING CANAL

0.1 MI N ALPINE AVE, San Joaquin, CA

Built 1971 Load: 32.4 t ADT: 13,193

AIRPORT WAY

Good

Over: NORTH LITTLE JOHNS CREEK

0.15 MI N INDUSTRIAL WAY, San Joaquin, CA

Built 1968 Load: 32.4 t ADT: 9,277

PARADISE ROAD

Good

Over: PARADISE CUT

0.5 MI N OF DELTA AVE, San Joaquin, CA

Built 1988 Load: 32.4 t ADT: 288

ESCALON-BELLOTA RD

Good

Over: CHANNEL C

0.8 MI S OF S.H. 26, San Joaquin, CA

Built 1965 Load: 32.4 t ADT: 2,430

CORRAL HOLLOW RD

Good

Over: CORRAL HOLLOW CREEK

2.6 MI SW OF I-580, San Joaquin, CA

Built 1959 Load: 32.4 t ADT: 1,006

LIBERTY RD

Good

Over: SOUTH FORK COYOTE CREEK

0.2 MI E OF JACK TONE RD, San Joaquin, CA

Built 1964 Load: 32.4 t ADT: 2,563

ELLIOTT RD

Good

Over: DRY CREEK

SJ/SAC COUNTY LINE, San Joaquin, CA

Built 1990 Load: 32.4 t ADT: 1,120

JOHNSON ROAD

Good

Over: BEAR CREEK

.1 MI S OF SR 12, San Joaquin, CA

Built 1982 Load: 32.4 t ADT: 68

TULLY ROAD

Good

Over: MOSHER SLOUGH

0.1 MI S FRAZIER RD, San Joaquin, CA

Built 1989 Load: 32.4 t ADT: 268

WILLIAMSON RD

Good

Over: WALTHALL SLOUGH

0.4 MI E OF OAK STREET, San Joaquin, CA

Built 1988 Load: 32.4 t ADT: 398

MACARTHUR DRIVE

Good

Over: TOM PAINE SLOUGH

0.1 MI S OF CANAL BLVD, San Joaquin, CA

Built 1987 Load: 32.4 t ADT: 1,036

AUSTIN ROAD

Good

Over: LONE TREE CREEK

0.6 MI N OF FRENCH CAMP, San Joaquin, CA

Built 1969 Load: 32.4 t ADT: 442

AUSTIN ROAD

Good

Over: WEBER CREEK

4.3 MI N FRENCH CAMP RD, San Joaquin, CA

Built 1973 Load: 32.4 t ADT: 1,947

CARPENTER ROAD

Good

Over: DUCK CREEK S BRANCH

AT MARIPOSA ROAD, San Joaquin, CA

Built 1974 Load: 32.4 t ADT: 841

WOODWARD ISLAND RD

Good

Over: MIDDLE RIVER

0.1 MI W BACON ISLAND RD, San Joaquin, CA

Built 2020 Load: 32.4 t ADT: 100

PORT STOCKTON EXPR

Good

Over: SAN JOAQUIN RIVER (BURNS

ROUGH AND READY ISLAND, San Joaquin, CA

Built 2007 Load: 32.4 t ADT: 1,000

RIVER ROAD

Good

Over: SSJID CANAL

AT VICTORY ROAD, San Joaquin, CA

Built 2005 Load: 32.4 t ADT: 2,272

POCK LANE

Good

Over: NORTH LITTLE JOHNS CREEK

N OF INDUSTRIAL DRIVE, San Joaquin, CA

Built 1993 Load: 32.4 t ADT: 1,500

TRINITY PARKWAY

Good

Over: BEAR CREEK

S OF W EIGHT MILE ROAD, San Joaquin, CA

Built 2008 Load: 32.4 t ADT: 6

LILAC STREET

Good

Over: WOODBRIDGE ID MAIN CANAL

0.4 MI N OF TURNER ROAD, San Joaquin, CA

Built 1993 Load: 32.4 t ADT: 3,784

EL RANCHO ROAD

Good

Over: TOM PAINE SLOUGH

N OF ROUTE 205, San Joaquin, CA

Built 2011 Load: 32.4 t ADT: 258

EIGHT MILE ROAD

Good

Over: UP RAILROAD TRACKS

EAST OF LOWER SAC. ROAD, San Joaquin, CA

Built 2013 Load: 32.4 t ADT: 15,100

EIGHT MILE ROAD

Good

Over: UP RAILROAD TRACKS

WEST OF LOWER SAC. ROAD, San Joaquin, CA

Built 2013 Load: 32.4 t ADT: 15,100

NORTH TULLY ROAD

Good

Over: BEAR CREEK

1 MILE SOUTH OF ROUTE 12, San Joaquin, CA

Built 2011 Load: 32.4 t ADT: 1,055

ARCH AIRPORT ROAD

Good

Over: EL DORADO STREET

0.46 MI EAST OF ROUTE 5, San Joaquin, CA

Built 2013 Load: 32.4 t ADT: 20,818

ARCH AIRPORT ROAD

Good

Over: UP RAILROAD TRACKS

0.56 MI EAST OF ROUTE 5, San Joaquin, CA

Built 2013 Load: 32.4 t ADT: 20,818

LATHROP ROAD

Good

Over: UPRR

0.8 MILE EAST OF I-5, San Joaquin, CA

Built 2015 Load: 32.4 t ADT: 14,498

NAVY DRIVE

Good

Over: SAN JOAQUIN RIVER

ROUGH AND READY ISLAND, San Joaquin, CA

Built 2018 Load: 32.4 t ADT: 8,000

MCHENRY AVE

Good

Over: SSJID CANAL

JUST S OF MEYERS AVE, San Joaquin, CA

Built 2018 Load: 32.4 t ADT: 18,676

VICTORY AVENUE

Good

Over: LONE TREE CREEK

1.9 MI N OF SR 120, San Joaquin, CA

Built 2020 Load: 32.4 t ADT: 464

WILDWOOD ROAD

Good

Over: TEMPLE CREEK

BETWEEN JACKTONE & MURPHY, San Joaquin, CA

Built 2018 Load: 32.4 t ADT: 500

STATE ROUTE 26

Good

Over: INDIAN CREEK

10-CAL-026-R4.31, Calaveras, CA

Built 1990 Load: 32.4 t ADT: 2,500

SB STATE ROUTE 26

Good

Over: HILLSIDE

10-CAL-026-29.33, Calaveras, CA

Built 1984 Load: 32.4 t ADT: 1,550

STATE ROUTE 26

Good

Over: M. FORK MOKELUMNE RIVER

10-CAL-026-R33.65, Calaveras, CA

Built 1997 Load: 32.4 t ADT: 1,825

STATE ROUTE 4

Good

Over: MURPHYS GRADE ROAD

10-CAL-004-R21.89, Calaveras, CA

Built 2009 Load: 32.4 t ADT: 9,150

STATE ROUTE 4

Good

Over: CREEK & PENSTOCK PIPE

10-CAL-004-R22.09, Calaveras, CA

Built 2009 Load: 32.4 t ADT: 7,900

STATE ROUTE 4

Good

Over: ANGELS CREEK

10-CAL-004-R22.80, Calaveras, CA

Built 2009 Load: 32.4 t ADT: 9,150

ROCK CREEK RD

Good

Over: ROCK CREEK

1.7 MI S/E MILTON RD, Calaveras, CA

Built 1990 Load: 32.4 t ADT: 37

MAIN STREET

Good

Over: COYOTE CREEK

0.7 MILES SOUTH OF RTE 4., Calaveras, CA

Built 2003 Load: 32.4 t ADT: 417

JESUS MARIA ROAD

Good

Over: NORTH FORK CALAVERAS RIV

2.4 MI S/E OF SR 26, Calaveras, CA

Built 1989 Load: 32.4 t ADT: 479

SHEEP RANCH RD

Good

Over: INDIAN CREEK

6 MI N OF MURPHYS, Calaveras, CA

Built 1989 Load: 32.4 t ADT: 161

POOLE STATION ROAD

Good

Over: CALAVERITAS CREEK

9.6 MI NORTH OF SR 4, Calaveras, CA

Built 2001 Load: 32.4 t ADT: 462

RAILROAD FLAT ROAD

Good

Over: MOKELUMNE RIVER

3.7 MILES SE OF SR 26, Calaveras, CA

Built 1999 Load: 32.4 t ADT: 700

DOGTOWN ROAD

Good

Over: SAN ANTONIO CREEK

9.2 ILES N/O SR 49, Calaveras, CA

Built 2001 Load: 32.4 t ADT: 100

BOOSTER WAY

Good

Over: ANGELS CREEK

0.1 MI W OF SR 4, Calaveras, CA

Built 1990 Load: 32.4 t ADT: 400

CREEKVIEW DRIVE

Good

Over: ANGELS CREEK

150FT N SR4 & BIG TREE DR, Calaveras, CA

Built 2009 Load: 32.4 t ADT: 400

RAILROAD FLAT ROAD

Good

Over: ESPERANZA CREEK

BETWN RDGE RD & JES MA RD, Calaveras, CA

Built 2018 Load: 32.4 t ADT: 800

SOUTHWORTH ROAD

Good

Over: BEAR CREEK

0.4 MI S OF ROUTE 12, Calaveras, CA

Built 2001 Load: 32.4 t ADT: 1,000

STATE ROUTE 4

Good

Over: NORTH FORK MOKELUMNE RIV

10-ALP-004-12.94, Alpine, CA

Built 1937 Load: 32.4 t ADT: 490

STATE ROUTE 4

Good

Over: SILVER CREEK

10-ALP-004-27.98, Alpine, CA

Built 1986 Load: 32.4 t ADT: 580

Showing 17,401-17,450 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.