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

LOBO CYN RD W/XING

Good

Over: LOBO CRK

1.4MI W/O TRIFUNO CYN RD, Los Angeles, CA

Built 1954 Load: 37.3 t ADT: 189

CENTRAL AVE

Good

Over: SAWPIT WASH

0.2MI W/O MOUNTAIN AVE, Los Angeles, CA

Built 1968 Load: 37.3 t ADT: 21,994

SR 73 NB

Good

Over: BAKER STREET

12-ORA-073-R27.14-CMS, Orange, CA

Built 1977 Load: 37.3 t ADT: 52,500

INTERSTATE 10 WB

Good

Over: HILLOCK DITCH

08-RIV-010-R100.68, Riverside, CA

Built 1967 Load: 37.3 t ADT: 11,500

STATE ROUTE 111

Good

Over: ELM DITCH

08-RIV-111-6.60, Riverside, CA

Built 1951 Load: 37.3 t ADT: 1,650

STATE ROUTE 111

Good

Over: OLIVE DITCH

08-RIV-111-11.30, Riverside, CA

Built 1951 Load: 37.3 t ADT: 2,700

STATE ROUTE 111

Good

Over: WALNUT DITCH

08-RIV-111-13.18, Riverside, CA

Built 1951 Load: 37.3 t ADT: 2,700

MAIN STREET

Good

Over: INTERSTATE 5

11-SD-005-5.40-SD, San Diego, CA

Built 1973 Load: 37.3 t ADT: 26,900

FIRST AVE

Good

Over: INTERSTATE 5

11-SD-005-R16.59-SD, San Diego, CA

Built 1962 Load: 37.3 t ADT: 14,500

INTERSTATE 8 WB

Good

Over: 2ND STREET

11-SD-008-17.35-ECJ, San Diego, CA

Built 1961 Load: 37.3 t ADT: 53,000

INTERSTATE 8 EB

Good

Over: CARRIZO RD

11-SD-008-R73.96, San Diego, CA

Built 1967 Load: 37.3 t ADT: 7,350

AERO DRIVE

Good

Over: ROUTE 163 & CONN RAMPS

11-SD-163-7.17-SD, San Diego, CA

Built 1972 Load: 37.3 t ADT: 31,700

INTERSTATE 8 EB

Good

Over: STATE ROUTE 79

11-SD-008-R37.83, San Diego, CA

Built 1970 Load: 37.3 t ADT: 11,050

SB MORENA-W8 ONRMP

Good

Over: PEDESTRIAN WALKWAY

11-SD-008-R0.35-SD, San Diego, CA

Built 1969 Load: 37.3 t ADT: 5,000

DUNAWAY ROAD

Good

Over: INTERSTATE 8

11-IMP-008-R23.48, Imperial, CA

Built 1968 Load: 37.3 t ADT: 250

WINDING ROAD

Good

Over: SIDE STREAM

NO DATA ENTERED, Amador, CA

Built 1968 Load: 37.3 t ADT: 50

ROAD M01

Good

Over: SMOKEHOUSE CRK

N. OF LAKE PILLSBURY, Lake, CA

Built 1976 Load: 37.3 t ADT: 313

ROAD M1

Good

Over: SALMON CREEK

N. OF LAKE PILLSBURY, Lake, CA

Built 1976 Load: 37.3 t ADT: 318

SUNSET AVE

Good

Over: US HIGHWAY 101

01-HUM-101-86.94-ARC, Humboldt, CA

Built 1976 Load: 37.6 t ADT: 6,378

INTERSTATE 5 SB

Good

Over: SOUTH FORK MCCLURE CREEK

02-TEH-005-R14.19, Tehama, CA

Built 1965 Load: 37.6 t ADT: 14,500

INTERSTATE 5 NB

Good

Over: SOUTH FORK MCCLURE CREEK

02-TEH-005-R14.19, Tehama, CA

Built 1965 Load: 37.6 t ADT: 14,500

HAHN ROAD

Good

Over: NORTH BRANCH SAND CREEK

0.7 MI EAST OF OLD 99 W, Colusa, CA

Built 1968 Load: 37.6 t ADT: 1,651

DOUGLAS BLVD

Good

Over: DRY CREEK

0.35 MI E OF VERNON ST, Placer, CA

Built 1972 Load: 37.6 t ADT: 16,694

STATE ROUTE 51

Good

Over: ARCADE CREEK

03-SAC-051-8.06-SAC, Sacramento, CA

Built 1954 Load: 37.6 t ADT: 145,000

DUNCAN ROAD

Good

Over: MORMON SLOUGH

0.6 MI N COPPEROPOLIS RD, San Joaquin, CA

Built 1973 Load: 37.6 t ADT: 1,839

CLEMENTS RD

Good

Over: BRANCH BEAR CREEK

0.3 MI N ACAMPO RD, San Joaquin, CA

Built 1966 Load: 37.6 t ADT: 1,407

INTERSTATE 580 WB

Good

Over: S580-N123 CONNECTOR RAMP

04-ALA-580-45.99-OAK, Alameda, CA

Built 1961 Load: 37.6 t ADT: 99,000

E580-WEBSTER&BROAD

Good

Over: WEBSTER STREET

04-ALA-580-44.81-OAK, Alameda, CA

Built 1961 Load: 37.6 t ADT: 2,950

NB I280 & RAMPS

Good

Over: SR 87 CONNS STRS RIVER

04-SCL-280-R2.19-SJS, Santa Clara, CA

Built 1971 Load: 37.6 t ADT: 108,000

FIELDS ROAD

Good

Over: DRY CREEK

1.4 MI NORTH OF KEYES RD, Merced, CA

Built 1965 Load: 37.6 t ADT: 75

PANOCHE JCT UTIL R

Good

Over: INTERSTATE 5

06-FRE-005-40.66, Fresno, CA

Built 1967 Load: 37.6 t ADT: 40

US HIGHWAY 101 NB

Good

Over: ANZAR ROAD

05-SBT-101-R4.25, San Benito, CA

Built 1972 Load: 37.6 t ADT: 25,500

SCENIC DRIVE OC

Good

Over: STATE ROUTE 68

05-MON-068-3.07, Monterey, CA

Built 1930 Load: 37.6 t ADT: 561

N MAIN ST-S101 ON

Good

Over: US 101 SR183 MAIN-N101

05-MON-101-R88.28-SAL, Monterey, CA

Built 1965 Load: 37.6 t ADT: 8,300

US HIGHWAY 101 SB

Good

Over: JOLON RD (CO RD G14)

05-MON-101-R41.95L, Monterey, CA

Built 1968 Load: 37.6 t ADT: 12,600

US HIGHWAY 101 SB

Good

Over: LOCKWOOD SAN LUCAS ROAD

05-MON-101-R30.65, Monterey, CA

Built 1971 Load: 37.6 t ADT: 7,450

STATE ROUTE 1

Good

Over: HILLSIDE ABOVE OCEAN

05-MON-001-35.90, Monterey, CA

Built 1981 Load: 37.6 t ADT: 5,000

US HIGHWAY 101 NB

Good

Over: GRAVES CREEK

05-SLO-101-49.40, San Luis Obispo, CA

Built 1975 Load: 37.6 t ADT: 31,000

US HIGHWAY 101 SB

Good

Over: TENTH STREET

05-SLO-101-65.56, San Luis Obispo, CA

Built 1957 Load: 37.6 t ADT: 8,750

US HIGHWAY 101 NB

Good

Over: TENTH STREET

05-SLO-101-65.56, San Luis Obispo, CA

Built 1957 Load: 37.6 t ADT: 8,750

STATE ROUTE 58

Good

Over: HART FLAT ROAD

09-KER-058-80.24, Kern, CA

Built 1962 Load: 37.6 t ADT: 42,400

STATE ROUTE 178 EB

Good

Over: UP RR & ESPEE STREET

06-KER-178-R2.09-BKD, Kern, CA

Built 1967 Load: 37.6 t ADT: 25,500

STATE ROUTE 58 EB

Good

Over: UP RR BNSF TEHACHAPI BL

09-KER-058-R94.16, Kern, CA

Built 1970 Load: 37.6 t ADT: 19,500

STATE ROUTE 58 WB

Good

Over: TVRR

06-KER-058-R58.92, Kern, CA

Built 1974 Load: 37.6 t ADT: 32,500

STATE ROUTE 58 EB

Good

Over: TVRR

06-KER-058-R58.92, Kern, CA

Built 1974 Load: 37.6 t ADT: 22,500

5TH ST-SB 110 ONRP

Good

Over: STATE ROUTE 110 & RAMP

07-LA-110-22.88-LA, Los Angeles, CA

Built 1953 Load: 37.6 t ADT: 12,700

INTERSTATE 405

Good

Over: BNSF RY SPUR

07-LA-405-18.92-HAW, Los Angeles, CA

Built 1963 Load: 37.6 t ADT: 260,800

INTERSTATE 605

Good

Over: S605-E10

07-LA-605-R20.09-BWP, Los Angeles, CA

Built 1971 Load: 37.6 t ADT: 230,000

JACKSON ST

Good

Over: STATE ROUTE 134

07-LA-134-R7.40-GNDL, Los Angeles, CA

Built 1965 Load: 37.6 t ADT: 4,900

INTERSTATE 210

Good

Over: PAXTON STREET

07-LA-210-R6.01-LA, Los Angeles, CA

Built 1975 Load: 37.6 t ADT: 121,000

Showing 22,251-22,300 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.