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

LOS GATOS ROAD

Good

Over: LOS GATOS CREEK

17.9 MI W DERRICK BLVD, Fresno, CA

Built 1954 Load: 24.3 t ADT: 50

E. ALLUVIAL AVE

Good

Over: DRY CREEK CANAL

EAST OF CLOVIS AVE, Fresno, CA

Built 1970 Load: 24.3 t ADT: 6,600

E. FOUNTAIN WAY

Good

Over: DRY CREEK CANAL

JUST E/O MILLBROOK AVE, Fresno, CA

Built 1965 Load: 24.3 t ADT: 1,840

N SAN DIEGO AVE

Good

Over: 3RD LIFT CANAL

0.92 MI S ASHLAN, Fresno, CA

Built 1967 Load: 24.3 t ADT: 500

E SHEPHERD AVE

Good

Over: ENTERPRISE CANAL

0.11 MI W/O SUNNYSIDE, Fresno, CA

Built 1970 Load: 24.3 t ADT: 9,100

E ADAMS AVE

Good

Over: WAHTOKE CREEK

0.1 MI E OF REED AVENUE, Fresno, CA

Built 1969 Load: 24.3 t ADT: 3,000

FIFTH STREET

Good

Over: US HIGHWAY 101

05-MON-101-70.86, Monterey, CA

Built 1963 Load: 24.3 t ADT: 5,300

JOLON RD-S101 ONRP

Good

Over: KEMP CANYON CREEK

05-MON-101-R9.65, Monterey, CA

Built 1942 Load: 24.3 t ADT: 620

JOLON RD

Good

Over: KEMP CANYON CREEK

AT SH 101, Monterey, CA

Built 1942 Load: 24.3 t ADT: 1,900

NACIMIENTO LAKE DR

Good

Over: KEMP CANYON CREEK

NEAR JOLON RD, Monterey, CA

Built 1961 Load: 24.3 t ADT: 380

VAN BUREN AVE

Good

Over: SANTA RITA CREEK

0.1 MI S OF BOLIVAR, Monterey, CA

Built 1970 Load: 24.3 t ADT: 1,812

RUSSELL ROAD

Good

Over: SANTA RITA CREEK

0.1 M W SAN JUAN GRADE, Monterey, CA

Built 1961 Load: 24.3 t ADT: 1,500

STATE ROUTE 43

Good

Over: PEOPLES DITCH

06-KIN-043-23.50, Kings, CA

Built 1916 Load: 24.3 t ADT: 10,200

14TH AVE

Good

Over: LAST CHANCE DITCH

0.6 MI N/O LACEY BLVD, Kings, CA

Built 1960 Load: 24.3 t ADT: 4,469

18TH AVE

Good

Over: E BR LEMOORE CANAL

0.1 MI SO JERSEY AVE, Kings, CA

Built 1972 Load: 24.3 t ADT: 1,500

UTICA AVE

Good

Over: LIBERTY FARMS SO CANAL

6.0 MI W 10TH AVE, Kings, CA

Built 1966 Load: 24.3 t ADT: 1,500

LACEY BLVD

Good

Over: W BR LAST CHANCE DITCH

0.4 MI E/O 16TH AVE, Kings, CA

Built 1958 Load: 24.3 t ADT: 5,298

QUEBEC AVE

Good

Over: SWEET CANAL

E/O MARCELLA AVE, Kings, CA

Built 1966 Load: 24.3 t ADT: 1,500

PUEBLO AVE

Good

Over: TULARE LAKE CANAL

AT 10TH AVE, Kings, CA

Built 1970 Load: 24.3 t ADT: 250

20 1/2 AVE

Good

Over: TULARE LAKE CANAL

0.7 MI N MADISON AVE, Kings, CA

Built 1965 Load: 24.3 t ADT: 200

20TH AVE

Good

Over: TULARE LAKE CANAL

0.5 MI N MADISON AVE, Kings, CA

Built 1965 Load: 24.3 t ADT: 200

STATE ROUTE 198

Good

Over: OUTSIDE CREEK

06-TUL-198-R16.58, Tulare, CA

Built 1934 Load: 24.3 t ADT: 21,000

STATE ROUTE 99 NB

Good

Over: CROSS CREEK

06-TUL-099-44.76, Tulare, CA

Built 1931 Load: 24.3 t ADT: 24,500

STATE ROUTE 99

Good

Over: TRAVER CANAL

06-TUL-099-49.20, Tulare, CA

Built 1957 Load: 24.3 t ADT: 49,000

STATE ROUTE 99 SB

Good

Over: TULE RIVER OVERFLOW #1

06-TUL-099-21.92, Tulare, CA

Built 1931 Load: 24.3 t ADT: 21,500

STATE ROUTE 99 SB

Good

Over: TULE RIVER OVERFLOW #2

06-TUL-099-22.05, Tulare, CA

Built 1931 Load: 24.3 t ADT: 21,500

STATE ROUTE 216

Good

Over: KAWEAH RIVER

06-TUL-216-18.68, Tulare, CA

Built 1954 Load: 24.3 t ADT: 1,250

STATE ROUTE 201

Good

Over: SAND CREEK

06-TUL-201-12.48, Tulare, CA

Built 1939 Load: 24.3 t ADT: 2,800

RD 144 (MCAULIFF)

Good

Over: PACKWOOD CREEK

0.45 MI N AVE 288, Tulare, CA

Built 1963 Load: 24.3 t ADT: 1,250

AVE 54 (4TH AVE)

Good

Over: HOMELAND CANAL

0.1 MI WEST OF ROAD 22, Tulare, CA

Built 1972 Load: 24.3 t ADT: 195

ROAD 140

Good

Over: CAMERON CREEK

AVENUE 280, Tulare, CA

Built 1970 Load: 24.3 t ADT: 980

AVE 176 (J28)

Good

Over: ARROYO DE BLANCO

3.5 MI NW/O SR 190, Tulare, CA

Built 1957 Load: 24.3 t ADT: 570

PROSPECT ST

Good

Over: PORTER SLOUGH

AT MORTON AVE, Tulare, CA

Built 1955 Load: 24.3 t ADT: 2,500

ROAD 120

Good

Over: ALTA CANAL

0.3 MI S OF AVE 432, Tulare, CA

Built 1968 Load: 24.3 t ADT: 1,400

E STREET

Good

Over: PORTER SLOUGH

IN CITY OF PORTERVILLE, Tulare, CA

Built 1953 Load: 24.3 t ADT: 2,500

ASH ST

Good

Over: DEEP CREEK

N DWIGHT ST & OAK VIEW AV, Tulare, CA

Built 1950 Load: 24.3 t ADT: 1,961

BLACKSTONE AVE

Good

Over: TULARE IRRIG DIST CANAL

AT PAIGE AVE, Tulare, CA

Built 1972 Load: 24.3 t ADT: 3,400

LASPINA ST

Good

Over: TULARE IRRIG DIST CANAL

0.25 MI N OF PAIGE AVE, Tulare, CA

Built 1972 Load: 24.3 t ADT: 1,500

BARDSLEY AVE

Good

Over: TULARE IRRIG DIST CANAL

AT MOONEY BLVD, Tulare, CA

Built 1964 Load: 24.3 t ADT: 4,100

LINWOOD AVE

Good

Over: MILL CREEK

0.15 MI N OF SR 198, Tulare, CA

Built 1953 Load: 24.3 t ADT: 500

U.S. HIGHWAY 395

Good

Over: SOUTH BRANCH ROBINSON CR

09-MNO-395-79.03, Mono, CA

Built 1934 Load: 24.3 t ADT: 6,950

U.S. HIGHWAY 395

Good

Over: NORTH BRANCH ROBINSON CR

09-MNO-395-79.17, Mono, CA

Built 1934 Load: 24.3 t ADT: 6,950

U.S. HIGHWAY 395

Good

Over: N BR BUCKEYE CREEK

09-MNO-395-79.48, Mono, CA

Built 1934 Load: 24.3 t ADT: 6,950

U.S. HIGHWAY 395

Good

Over: MIDDLE BRANCH BUCKEYE CR

09-MNO-395-79.38, Mono, CA

Built 1934 Load: 24.3 t ADT: 6,950

LOWER ROCK CRK RD

Good

Over: ROCK CREEK

1.9 MI S/O JCT US 395, Mono, CA

Built 1920 Load: 24.3 t ADT: 520

WHITNEY PORTAL RD

Good

Over: LONE PINE CREEK

0.8 MI W OF RTE 395 JCT, Inyo, CA

Built 1970 Load: 24.3 t ADT: 1,224

U.S. HIGHWAY 101

Good

Over: SANTA MARGARITA CREEK

05-SLO-101-36.58, San Luis Obispo, CA

Built 1916 Load: 24.3 t ADT: 43,000

I STREET

Good

Over: YERBA BUENA CREEK

0.05 MI S/W OF S.R. 58, San Luis Obispo, CA

Built 1950 Load: 24.3 t ADT: 100

ESTRELLA RD

Good

Over: RANCHITA CANYON CREEK

0.5 MI E PLEASANT RD, San Luis Obispo, CA

Built 1940 Load: 24.3 t ADT: 529

PREFUMO CANYON RD

Good

Over: PREFUMO CANYON CREEK

0.9 MI SW LOS OSOS VLY RD, San Luis Obispo, CA

Built 1969 Load: 24.3 t ADT: 300

Showing 14,151-14,200 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.