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

FULKERTH ROAD

Fair

Over: T.I.D. CERES MAIN CANAL

0.2 MI W/O FAITH HOME RD, Stanislaus, CA

Built 1920 Load: 16.2 t ADT: 3,669

MITCHELL ROAD

Fair

Over: T.I.D. LOWER LATERAL #2

JCT WITH GNDRNG RD, Stanislaus, CA

Built 1920 Load: 16.2 t ADT: 86

MILTON ROAD

Fair

Over: ROCK CREEK

3.4 MI N/O SR 4, Stanislaus, CA

Built 1918 Load: 16.2 t ADT: 716

5TH STREET

Fair

Over: CCID MAIN CANAL

AT JUNC W /ARMSTRONG RD, Stanislaus, CA

Built 1926 Load: 16.2 t ADT: 343

COOPERSTOWN ROAD

Fair

Over: DRY CREEK

0.8 MI NW LA GRANGE RD, Stanislaus, CA

Built 1921 Load: 16.2 t ADT: 35

MORGAN ROAD

Fair

Over: T.I.D. LOWER LATERAL #2

0.6 MI S/O SERVICE RD, Stanislaus, CA

Built 1930 Load: 16.2 t ADT: 3,300

DAKOTA AVENUE

Fair

Over: M.I.D. LATERAL #7

0.1 MI N OF BECKWITH RD, Stanislaus, CA

Built 1925 Load: 16.2 t ADT: 4,347

FAITH HOME ROAD

Fair

Over: T.I.D. UPPER LATERAL #3

S/O BARNHART ROAD, Stanislaus, CA

Built 1920 Load: 16.2 t ADT: 1,478

WARNERVILLE ROAD

Fair

Over: DRY CREEK TRIBUTARY

1 MI W CRABTREE RD, Stanislaus, CA

Built 1920 Load: 16.2 t ADT: 94

WILLIAMS ROAD

Fair

Over: M.I.D. LATERAL #6

0.4 MI N/O COVERT RD, Stanislaus, CA

Built 1925 Load: 16.2 t ADT: 72

JACKSON ROAD

Fair

Over: M.I.D. LATERAL #6

0.2 MI N/O COVERT RD, Stanislaus, CA

Built 1925 Load: 16.2 t ADT: 154

DUNN ROAD

Fair

Over: M.I.D. LATERAL #6

0.6 MI N/O BACON RD, Stanislaus, CA

Built 1925 Load: 16.2 t ADT: 159

ROSEMOORE AVENUE

Fair

Over: M.I.D. LATERAL #4

0.3 MI N/O RTE 132, Stanislaus, CA

Built 1920 Load: 16.2 t ADT: 2,655

WELLSFORD ROAD

Fair

Over: M.I.D. LATERAL #2

0.1 MI S/O GARST RD, Stanislaus, CA

Built 1920 Load: 16.2 t ADT: 1,500

WARNER ROAD

Fair

Over: T.I.D. CERES MAIN CANAL

0.5 MI W/O FAITH HOME RD, Stanislaus, CA

Built 1920 Load: 16.2 t ADT: 45

GRIFFIN ROAD

Fair

Over: T.I.D. UPPER LATERAL #2

NEAR JCT AT SERVICE RD, Stanislaus, CA

Built 1925 Load: 16.2 t ADT: 317

OHIO AVENUE

Fair

Over: M.I.D. LATERAL #5

SOUTH OF CHICAGO AVE, Stanislaus, CA

Built 1920 Load: 16.2 t ADT: 500

STATE ROUTE 99

Fair

Over: TURLOCK CANAL

10-MER-099-R35.04, Merced, CA

Built 1935 Load: 16.2 t ADT: 65,000

STATE ROUTE 99 SB

Fair

Over: WEBBER CANAL

10-MER-099-19.49, Merced, CA

Built 1919 Load: 16.2 t ADT: 28,000

STATE ROUTE 33

Fair

Over: PARNELL BYPASS

10-MER-033-21.47, Merced, CA

Built 1920 Load: 16.2 t ADT: 7,475

BLOSS AVENUE

Fair

Over: HIGH LINE CANAL

1.0 MI WEST OF SR 99, Merced, CA

Built 1940 Load: 16.2 t ADT: 1,177

WILLIAMS AVENUE

Fair

Over: HIGH LINE WASTEWAY

1.6 MI E GRIFFITH AVE, Merced, CA

Built 1935 Load: 16.2 t ADT: 400

HINTON AVENUE

Fair

Over: HIGH LINE CANAL

0.3 MI S OF BLOSS AVE, Merced, CA

Built 1940 Load: 16.2 t ADT: 610

SYCAMORE STREET

Fair

Over: HIGH LINE CANAL

0.5 MI N BLOSS AVE, Merced, CA

Built 1940 Load: 16.2 t ADT: 1,272

ROSELAWN AVENUE

Fair

Over: LATERAL #5

0.3 MI W MERCED AVE, Merced, CA

Built 1940 Load: 16.2 t ADT: 65

SECOND AVENUE

Fair

Over: HIGH LINE CANAL

AT CANAL DRIVE, Merced, CA

Built 1940 Load: 16.2 t ADT: 125

SOUTH AVE

Fair

Over: HIGH LINE CANAL

0.3 MI W CORTEZ AVE, Merced, CA

Built 1940 Load: 16.2 t ADT: 266

NORTH AVENUE

Fair

Over: HIGH LINE CANAL

AT PEPPER ST, Merced, CA

Built 1940 Load: 16.2 t ADT: 110

BRADBURY ROAD

Fair

Over: HIGH LINE CANAL

AT PEPPER ST, Merced, CA

Built 1940 Load: 16.2 t ADT: 643

LOMBARDY AVENUE

Fair

Over: HIGH LINE CANAL

AT PEPPER ST, Merced, CA

Built 1940 Load: 16.2 t ADT: 263

AMSTERDAM ROAD

Fair

Over: ESCALADIAN CANAL

AT YOUD ROAD, Merced, CA

Built 1940 Load: 16.2 t ADT: 86

SHAFFER ROAD

Fair

Over: LIVINGSTON CANAL

0.2 MI N BELLEVUE ROAD, Merced, CA

Built 1930 Load: 16.2 t ADT: 6,238

WARDROBE AVENUE

Fair

Over: EL CAPITAN CANAL

AT THORNTON AVENUE, Merced, CA

Built 1935 Load: 16.2 t ADT: 500

BAILEY AVENUE

Fair

Over: EL CAPITAN CANAL

AT THORNTON AVENUE, Merced, CA

Built 1945 Load: 16.2 t ADT: 300

GOVE ROAD

Fair

Over: EL CAPITAN CANAL

AT RICE ROAD, Merced, CA

Built 1945 Load: 16.2 t ADT: 500

JERRY COLLINS AVE

Fair

Over: DEANE CANAL

AT GURR ROAD, Merced, CA

Built 1940 Load: 16.2 t ADT: 40

FAHEY ROAD

Fair

Over: OUTSIDE CANAL

0.2 MI E HWY 33, Merced, CA

Built 1945 Load: 16.2 t ADT: 95

BUHACH ROAD

Fair

Over: ESCALADIAN CANAL

0.2 MI NORTH OF SHAW AVE, Merced, CA

Built 1938 Load: 16.2 t ADT: 200

EL CAPITAN WAY

Fair

Over: HIGH LINE CANAL

0.25 MI W PEPPER ST, Merced, CA

Built 1925 Load: 16.2 t ADT: 948

PEPPER STREET

Fair

Over: HIGH LINE CANAL

0.5 MI N SANTA FE DRIVE, Merced, CA

Built 1948 Load: 16.2 t ADT: 200

PEPPER STREET

Fair

Over: HIGH LINE CANAL

EAST AVENUE, Merced, CA

Built 1948 Load: 16.2 t ADT: 50

MERCED AVENUE

Fair

Over: LATERAL #6

1.35 MI SOUTH OF SR 99, Merced, CA

Built 1948 Load: 16.2 t ADT: 2,249

GRIFFITH AVENUE

Fair

Over: HIGH LINE CANAL

1.15 MI SOUTH BLOSS AVE, Merced, CA

Built 1948 Load: 16.2 t ADT: 204

OAKDALE ROAD

Fair

Over: ESCALADIAN CANAL

YOUD ROAD, Merced, CA

Built 1948 Load: 16.2 t ADT: 480

CENTER AVENUE

Fair

Over: CCID MAIN CANAL

0.4 MI SOUTH OF SR 152, Merced, CA

Built 1948 Load: 16.2 t ADT: 4,087

OLD STATE ROUTE 99

Fair

Over: OWENS CREEK

0.7 MI SE OF HEALY RD, Merced, CA

Built 1914 Load: 16.2 t ADT: 384

STATE ROUTE 49

Fair

Over: DELONG CREEK

10-MPA-049-6.18, Mariposa, CA

Built 1948 Load: 16.2 t ADT: 3,725

OLD HIGHWAY ROAD

Fair

Over: AGUA FRIA CREEK

4.7 MI SW OF SR 49, Mariposa, CA

Built 1919 Load: 16.2 t ADT: 180

WHITE ROCK ROAD

Fair

Over: MARIPOSA CREEK

1.6 MI S/O OLD HWY, Mariposa, CA

Built 1968 Load: 16.2 t ADT: 20

TRIANGLE ROAD

Fair

Over: SUMMIT CREEK

STATE ROUTE 140, Mariposa, CA

Built 1935 Load: 16.2 t ADT: 960

Showing 901-950 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.