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

STATE ROUTE 299

Good

Over: NORTH FORK TRINITY RIVER

02-TRI-299-36.89, Trinity, CA

Built 1984 Load: 32.4 t ADT: 3,325

STATE ROUTE 36

Good

Over: SOUTH FORK TRINITY RIVER

02-TRI-036-16.82, Trinity, CA

Built 1979 Load: 32.4 t ADT: 560

STATE ROUTE 3

Good

Over: RUSH CREEK

02-TRI-003-38.73, Trinity, CA

Built 2000 Load: 32.4 t ADT: 865

STATE ROUTE 3

Good

Over: SCOTT MOUNTAIN CREEK

02-TRI-003-T81.23, Trinity, CA

Built 1982 Load: 32.4 t ADT: 190

STATE ROUTE 3

Good

Over: HILLSIDE

02-TRI-003-49.71, Trinity, CA

Built 1986 Load: 32.4 t ADT: 865

STATE ROUTE 299

Good

Over: TRINITY RIVER

02-TRI-299-R3.44, Trinity, CA

Built 1991 Load: 32.4 t ADT: 3,800

STATE ROUTE 299

Good

Over: LITTLE BROWNS CREEK

02-TRI-299-54.54, Trinity, CA

Built 1999 Load: 32.4 t ADT: 5,375

SR 3

Good

Over: EAST FORK STUART FORK CR

02-TRI-003-53.69, Trinity, CA

Built 2008 Load: 32.4 t ADT: 865

STATE ROUTE 3

Good

Over: HAYFORK CREEK

02-TRI-003-6.52, Trinity, CA

Built 2006 Load: 32.4 t ADT: 1,405

STATE ROUTE 3

Good

Over: MINNEHAHA CREEK

02-TRI-003-70.70, Trinity, CA

Built 2012 Load: 32.4 t ADT: 200

STATE ROUTE 299

Good

Over: HILLSIDE

02-TRI-299-12.50, Trinity, CA

Built 2017 Load: 32.4 t ADT: 2,650

STATE ROUTE 299

Good

Over: HILLSIDE

02-TRI-299-12.70, Trinity, CA

Built 2017 Load: 32.4 t ADT: 2,650

STATE ROUTE 36

Good

Over: DITCH GULCH

02-TRI-036-R27.00, Trinity, CA

Built 2022 Load: 32.4 t ADT: 300

STATE ROUTE 3

Good

Over: SWIFT CREEK

02-TRI-003-R60.01, Trinity, CA

Built 2022 Load: 32.4 t ADT: 645

EAGLE CRK LOOP RD

Good

Over: TRINITY RIVER

0.25 MI NW OF S. R. 3, Trinity, CA

Built 2001 Load: 32.4 t ADT: 50

RAMSHORN ROAD

Good

Over: RAMSHORN CREEK

1.5 MI E OF S.R. 3, Trinity, CA

Built 1992 Load: 32.4 t ADT: 70

RUTH-ZENIA ROAD

Good

Over: MAD RIVER

17.0 MI S OF S.H.36, Trinity, CA

Built 1991 Load: 32.4 t ADT: 167

MILL STREET

Good

Over: MIDDLE WEAVER CREEK

0.5 MI SOUTH OF SR 299, Trinity, CA

Built 1986 Load: 32.4 t ADT: 330

COFFEE CREEK ROAD

Good

Over: NORTH FORK COFFEE CREEK

8.7 MI WEST OF S.R. 3, Trinity, CA

Built 1977 Load: 32.4 t ADT: 76

COFFEE CREEK ROAD

Good

Over: EAST FORK COFFEE CREEK

7.35 MI W OF SR 3, Trinity, CA

Built 1987 Load: 32.4 t ADT: 76

OREGON STREET

Good

Over: WEST WEAVER CREEK

1.4 MI W CARSON ST, Trinity, CA

Built 2000 Load: 32.4 t ADT: 103

RUTH-ZENIA ROAD

Good

Over: VAN DUZEN RIVER

14.8 MI FROM SR 36, Trinity, CA

Built 2003 Load: 32.4 t ADT: 88

HOAGLIN ROAD

Good

Over: KETTENPOM CREEK

2.9 MI E ZEN LAKE MTN RD, Trinity, CA

Built 2006 Load: 32.4 t ADT: 100

DEERLICK SPRING RD

Good

Over: BROWNS CREEK

2.05 MI S/O SR 3, Trinity, CA

Built 2005 Load: 32.4 t ADT: 47

MAD RIVER ROAD

Good

Over: OLSEN CREEK

1.5 MI S OF RTE 36, Trinity, CA

Built 2002 Load: 32.4 t ADT: 31

MAD RIVER ROAD

Good

Over: DUNBAR CREEK

5.9 MI S OF SR 36, Trinity, CA

Built 2004 Load: 32.4 t ADT: 50

EVANS BAR ROAD

Good

Over: SOLDIER CREEK

0.3 MI WEST DUTCH CRK RD, Trinity, CA

Built 2006 Load: 32.4 t ADT: 250

DUTCH CREEK ROAD

Good

Over: SOLDIER CREEK

4 MI SOUTH OF SR 299, Trinity, CA

Built 2006 Load: 32.4 t ADT: 500

EAST FORK ROAD

Good

Over: HALLS GULCH

0.7 MI NE OF EAST SIDE RD, Trinity, CA

Built 2013 Load: 32.4 t ADT: 100

ROUNDY ROAD

Good

Over: LITTLE BROWNS CREEK

0.07 MI WEST OF SR 3, Trinity, CA

Built 2007 Load: 32.4 t ADT: 50

BIG CREEK ROAD

Good

Over: PACKERS CREEK

7.5 MI N OR SR3 (HAYFORK), Trinity, CA

Built 2009 Load: 32.4 t ADT: 100

UPPER MAD RIVER RD

Good

Over: VAN HORN GULCH

25.4 MI S OF SR 36, Trinity, CA

Built 2014 Load: 32.4 t ADT: 100

LANCE GULCH ROAD

Good

Over: EAST WEAVER CREEK

NE WEAVERVILLE BY SR 3, Trinity, CA

Built 2016 Load: 32.4 t ADT: 200

UPPER MAD RIVER RD

Good

Over: SOUTH FORK MAD RIVER

28.5 MI S OF SR 36, Trinity, CA

Built 2014 Load: 32.4 t ADT: 100

WEST VAN DUZEN RD

Good

Over: SHANTY CREEK

7.2 MI N OF RUTH-ZENIA RD, Trinity, CA

Built 2014 Load: 32.4 t ADT: 578

COFFEE CREEK ROAD

Good

Over: COFFEE CREEK

13.1 MI W SR 3, Trinity, CA

Built 2017 Load: 32.4 t ADT: 42

RAMSHORN ROAD

Good

Over: MUMBO CREEK

9.6 MI EAST OF SR 3, Trinity, CA

Built 2017 Load: 32.4 t ADT: 15

JORDAN ROAD

Good

Over: LITTLE CREEK

0.1 MI NORTH OF SR 3, Trinity, CA

Built 2017 Load: 32.4 t ADT: 60

COFFEE CREEK ROAD

Good

Over: ADAMS CREEK

15.2 MI WEST OF SR 3, Trinity, CA

Built 2017 Load: 32.4 t ADT: 45

E. FORK HAYFORK RD

Good

Over: N FK E FK HAYFORK CREEK

4.9 MI E WILDWOOD RD, Trinity, CA

Built 2017 Load: 32.4 t ADT: 17

INTERSTATE 5

Good

Over: SALT CREEK

02-SHA-005-R20.80, Shasta, CA

Built 1953 Load: 32.4 t ADT: 29,500

INTERSTATE 5 SB

Good

Over: S5-MAIN ST OFF-RAMP

02-SHA-005-1.91, Shasta, CA

Built 1964 Load: 32.4 t ADT: 20,500

INTERSTATE 5 NB

Good

Over: S5-MAIN ST OFF-RAMP

02-SHA-005-1.91, Shasta, CA

Built 1964 Load: 32.4 t ADT: 20,500

STATE ROUTE 299

Good

Over: STILLWATER CREEK

02-SHA-299-27.94, Shasta, CA

Built 1992 Load: 32.4 t ADT: 9,500

STATE ROUTE 299

Good

Over: MONTGOMERY CREEK

02-SHA-299-56.74, Shasta, CA

Built 1953 Load: 32.4 t ADT: 3,950

STATE ROUTE 299

Good

Over: BURNEY CREEK

02-SHA-299-74.85, Shasta, CA

Built 1949 Load: 32.4 t ADT: 3,600

STATE ROUTE 299

Good

Over: WEST BRANCH BURNEY CREEK

02-SHA-299-75.06, Shasta, CA

Built 1949 Load: 32.4 t ADT: 9,800

STATE ROUTE 44

Good

Over: BEAR CREEK

02-SHA-044-R14.45, Shasta, CA

Built 1978 Load: 32.4 t ADT: 3,975

HILLTOP DR

Good

Over: STATE ROUTE 44

02-SHA-044-R0.13-RDG, Shasta, CA

Built 1968 Load: 32.4 t ADT: 24,118

HARTNELL AVE

Good

Over: INTERSTATE 5

02-SHA-005-R13.95-RDG, Shasta, CA

Built 1965 Load: 32.4 t ADT: 40,000

Showing 16,301-16,350 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.