State profile · Below median Poor share

Colorado 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 Colorado.

8,965
Public bridges
35.7%
Good condition
4.8%
Poor condition

Colorado holds 8,965 public highway bridges (#27 of 52 by inventory) with a 4.82% Poor share (#34 of 52 by Poor share).

That is 4.8% 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 19 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

8,965

Public highway bridges in Colorado

Good Condition

35.7%

3,197 bridges rated 7-9

-14.3pp vs 50% benchmark

Poor Condition

4.8%

432 bridges whose lowest applicable component is rated 0-4

-2.7pp vs national avg 7.5%

Colorado vs national bridge condition

Colorado - Good condition share 35.7%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Colorado - Poor-condition share 16.1%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.

Colorado 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: Colorado has 8,965 bridges and a 4.8% Poor-condition share in the 2024 NBI, rank #19 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 (%) CO, Public bridges in inventory (thousands): 9k · Poor-condition share (%): 4.82%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%CA, Public bridges in inventory (thousands): 25.8k · Poor-condition share (%): 5.91%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: Colorado has 8,965 bridges and a 4.8% Poor-condition share in the 2024 NBI, rank #19 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.

Colorado 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

8,965 27th of 54 higher than 27 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 Colorado

The highlighted point is Colorado: 8,965 bridges and 4.82% in Poor condition, rank #19 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Colorado on that same Poor-share ordering:

  • Connecticut: 4,365 bridges · 4.72% Poor
  • Ohio: 26,729 bridges · 4.74% Poor
  • Colorado: 8,965 bridges · 4.82% Poor
  • Idaho: 4,616 bridges · 4.90% Poor
  • Indiana: 19,495 bridges · 5.22% Poor

The full national sortable table lives on the rankings page.

Material families in Colorado

Exclusive FHWA material families across all 8,965 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.

Who maintains Colorado’s inventory

State agency holds 38.8% of the 8,965 public highway bridges filed under Colorado in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.

When Colorado’s bridges were built

Pre-1950 construction accounts for 8.5% of the 8,965 bridges with a recorded original year in Colorado. Era bands are orthogonal to the Poor-share ranking above.

Condition Distribution

Colorado35.7%59.5%GoodFairPoor
Bridge inventory deck-condition mix - Colorado (FHWA NBI)

Counties (64)

Adams 535 Alamosa 16 Arapahoe 391 Archuleta 44 Baca 106 Bent 68 Boulder 311 Broomfield 66 Chaffee 84 Cheyenne 61 Clear Creek 77 Conejos 62 Costilla 39 Crowley 28 Custer 20 Delta 64 Denver 458 Dolores 28 Douglas 263 Eagle 174 El Paso 686 Elbert 85 Fremont 137 Garfield 167 Gilpin 19 Grand 88 Gunnison 100 Hinsdale 31 Huerfano 94 Jackson 47 Jefferson 464 Kiowa 31 Kit Carson 130 La Plata 102 Lake 17 Larimer 559 Las Animas 207 Lincoln 129 Logan 182 Mesa 319 Mineral 26 Moffat 80 Montezuma 61 Montrose 118 Morgan 192 Otero 195 Ouray 39 Park 55 Phillips 27 Pitkin 62 Prowers 137 Pueblo 264 Rio Blanco 54 Rio Grande 71 Routt 96 Saguache 41 San Juan 13 San Miguel 59 Sedgwick 64 Summit 57 Teller 27 Washington 75 Weld 614 Yuma 49

Colorado 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 Colorado on the same metric.

CT

Connecticut

4.72% top marginal rate
Structure
Progressive
Burden @ $100K
$4,365

OH

Ohio

4.74% top marginal rate
Structure
Progressive
Burden @ $100K
$26,729
Selected

CO

Colorado

4.82% top marginal rate
Structure
Progressive
Burden @ $100K
$8,965

ID

Idaho

4.90% top marginal rate
Structure
Progressive
Burden @ $100K
$4,616

IN

Indiana

5.22% top marginal rate
Structure
Progressive
Burden @ $100K
$19,495

Bridges Needing Most Attention in Colorado

Six lowest-condition bridges in Colorado, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

144TH AVENUE

Poor

Over: LOST CREEK

1.2 MILES WEST OF SH 79, Adams, CO

Built 1960 Load: 0.0 t

County Road 79.0

Poor

Over: Salado Creek

2.8 Mi N of CR 64, Las Animas, CO

Built 2020 Load: 0.0 t ADT: 2

County Road 59

Poor

Over: N. Sterling Outlet Canal

0.3 Mi N of Co Rd 58, Logan, CO

Built 1940 Load: 1.4 t ADT: 6

COTTONWOOD ST

Poor

Over: NORTH CRESTONE CREEK

IN TOWN OF CRESTONE, Saguache, CO

Built 1991 Load: 2.3 t ADT: 65

CO Rd 32

Poor

Over: Feeder Ditch

0.28 MI E of Co Rd 75, Las Animas, CO

Built 1970 Load: 2.7 t ADT: 7

POTOMAC STREET

Poor

Over: OBRIAN CANAL

0.2 MILE NORTH OF SH 2, Adams, CO

Built 1940 Load: 3.8 t ADT: 190

All Bridges in Colorado

I 25 ML NBND

Good

Over: APACHE CREEK

15.4 M N OF WALSENBURG, Huerfano, CO

Built 1985 Load: 33.4 t ADT: 7,000

COUNTY ROAD 14

Good

Over: REED WASH

0.7 MI N of US50, Mesa, CO

Built 2016 Load: 33.4 t ADT: 693

County Road Y

Good

Over: Riverside Canal

1.2 Mi E of SH52, Morgan, CO

Built 2008 Load: 33.4 t ADT: 233

County Road 5

Good

Over: Trib.S.Fork Republican R

0.45 Mi. East of County R, Yuma, CO

Built 1998 Load: 33.4 t ADT: 31

S GUN CLUB RD

Good

Over: TOLL GATE CREEK

0.2 MI S of QUINCY AVE, Arapahoe, CO

Built 2021 Load: 33.5 t ADT: 21,850

SH 66 ML

Good

Over: ST VRAIN River

3.8 MI E OF JCT I 25, Weld, CO

Built 2013 Load: 33.5 t ADT: 12,000

County Road 27

Good

Over: Pawnee Ditch

0.7 Mi North of Co. Rd 12, Logan, CO

Built 2009 Load: 33.5 t ADT: 34

County Road 30

Good

Over: Beaver Creek

1.3 Mi N of Co. Rd. A, Morgan, CO

Built 2005 Load: 33.5 t ADT: 2

FDR 686

Good

Over: STONER MESA

.20 MI ON FDR 686, Dolores, CO

Built 1969 Load: 33.6 t ADT: 18

COUNTY ROAD 5825

Good

Over: IRONSTONE CANAL

1.2 MI W OF OLATHE, Montrose, CO

Built 1996 Load: 33.6 t ADT: 591

N. 95th St (CR19)

Good

Over: Left Hand Creek

.4 Mi S of SH 119, Boulder, CO

Built 2009 Load: 33.6 t ADT: 11,067

RMP/I25NB TO I70WB

Good

Over: RAMP TO I-25 SBND R

IN DENVER(MOUSETRAP), Denver, CO

Built 1993 Load: 33.6 t ADT: 78,500

I76 ML & RAMP

Good

Over: SECOND CREEK

BTWN JCT SH2 AND 120 AVE, Adams, CO

Built 2003 Load: 33.6 t ADT: 32,000

E-470 EB

Good

Over: Cottonwood Ck & Jamaica

0.47 MI FROM I 25, Douglas, CO

Built 1990 Load: 33.6 t ADT: 25,045

E-470 WB

Good

Over: Cottonwood Ck & Jamaica

0.47 MI FROM I 25, Douglas, CO

Built 1990 Load: 33.6 t ADT: 26,951

SH 141 ML

Good

Over: GRAND VALLEY CANAL

IN CLIFTON, Mesa, CO

Built 1984 Load: 33.6 t ADT: 15,000

COUNTY ROAD 4D

Good

Over: VEGA CREEK

1.0 MI E OF COLO 71, Lincoln, CO

Built 1994 Load: 33.6 t ADT: 56

SH 12 ML

Good

Over: S FK PURGATOIRE RIVER

AT WESTON, Las Animas, CO

Built 1936 Load: 33.6 t ADT: 520

Americana Rd

Good

Over: Ditch

40 ft W of N.Commercia, Las Animas, CO

Built 1950 Load: 33.6 t ADT: 961

TAYLOR PARK ROAD

Good

Over: TEXAS CREEK

26.8 MI. N.E. ALMONT CO., Gunnison, CO

Built 1993 Load: 33.7 t ADT: 482

FDR 631

Good

Over: WEMINUCHE CREEK

WEMINUCHE CREEK, Hinsdale, CO

Built 1997 Load: 33.7 t ADT: 34

NFSR 585

Good

Over: MINERAL CREEK

2.8 MI NW OF SILVERTON, San Juan, CO

Built 2012 Load: 33.7 t ADT: 50

IRR# COUNTY RD 214

Good

Over: ANIMAS RIVER

.1 MI S OF CR 213, La Plata, CO

Built 1987 Load: 33.7 t ADT: 647

County Road 67

Good

Over: S Fk Williams Fk River

6.3 Mi S of Co Rd 29, Routt, CO

Built 2019 Load: 33.7 t ADT: 23

US 287 ML

Good

Over: DRAW

0.9 MI N OF JCT SH 1, Larimer, CO

Built 2012 Load: 33.7 t ADT: 11,000

N. 95th St (CR10)

Good

Over: Highland Ditch

0.5 Mi N of Woodland, Boulder, CO

Built 1989 Load: 33.7 t ADT: 1,968

CHAPEL HILLS DRIVE

Good

Over: PINE CREEK

.3 MI N OF BRIARGATE PWY, El Paso, CO

Built 2002 Load: 33.7 t ADT: 6,253

US 36 ML

Good

Over: Ped Underpath / Creek

28TH ST/WINDING TRAIL DR., Boulder, CO

Built 2015 Load: 33.7 t ADT: 16,000

I 70 ML EBND

Good

Over: CLEAR CREEK

.4 MI EAST OF JCT. SH 121, Jefferson, CO

Built 1967 Load: 33.7 t ADT: 46,000

128TH AVE

Good

Over: I25 ML

0.5 MI W OF WASHINGTON ST, Adams, CO

Built 2008 Load: 33.7 t ADT: 15,767

E-470 NB

Good

Over: Burlington Ditch

34.79 MI FROM I25, Adams, CO

Built 2002 Load: 33.7 t ADT: 21,602

CO RD10B/Dagget Ln

Good

Over: Gypsym Creek

100 FT W OF DAGGETT LN, Eagle, CO

Built 2023 Load: 33.7 t ADT: 100

SH 103 ML

Good

Over: I 70 ML

IN IDAHO SPRINGS, Clear Creek, CO

Built 2015 Load: 33.7 t ADT: 2,300

KNOX CT

Good

Over: US 6 ML

IN DENVER, Denver, CO

Built 2014 Load: 33.7 t ADT: 6,998

Mc Clelland Drive

Good

Over: Larimer County Canal #2

20 ft S. W foothill Pkwy, Larimer, CO

Built 2019 Load: 33.7 t ADT: 4,020

Prospect Road

Good

Over: New Mercer Canal

0.1 Mi E of Brentwood Dr, Larimer, CO

Built 2014 Load: 33.7 t ADT: 15,960

County Road 8

Good

Over: Fraser River

0.2 Mi East of US Hwy 40, Grand, CO

Built 2019 Load: 33.7 t ADT: 2,341

FIRESTONE BLVD.

Good

Over: GODDING HOLLOW

0.1 mi W of CR 111, Weld, CO

Built 2020 Load: 33.7 t ADT: 24,922

COUNTY ROAD 31

Good

Over: I 70 ML

GENOA EXIT, Lincoln, CO

Built 1975 Load: 33.7 t ADT: 519

US 50 ML EBND

Good

Over: DRY CREEK

0.6 MI E OF JCT SH 45, Pueblo, CO

Built 1975 Load: 33.7 t ADT: 21,500

Rossum Drive

Good

Over: Big Barnes Ditch

0.1 Mi South of US 34, Larimer, CO

Built 2002 Load: 33.7 t ADT: 1,371

County Road 103

Good

Over: Laramie River

15. Mi N of St Hwy 14, Larimer, CO

Built 1991 Load: 33.7 t ADT: 57

Namaqua Avenue

Good

Over: Big Thompson River

0.5 Mi N of W 1st St., Larimer, CO

Built 2019 Load: 33.7 t ADT: 5,082

CR 904/CR 13

Good

Over: Little Thompson River

0.2 Mi N of Co Rd 6C, Larimer, CO

Built 1988 Load: 33.7 t ADT: 3,225

ALAMO AVENUE

Good

Over: RAILROAD AND LRT

JUST E OF RIO GRANDE ST, Arapahoe, CO

Built 1985 Load: 33.7 t ADT: 14,096

MAIN STREET

Good

Over: CARBONATE CREEK

Just east of 1st street, Gunnison, CO

Built 1987 Load: 33.7 t ADT: 436

NORTH DILLON DRIVE

Good

Over: UNION PACIFIC RR

.2 MI N of SH 47, Pueblo, CO

Built 2000 Load: 33.7 t ADT: 21,544

County Road 17

Good

Over: Big Dry Creek

0.3 Mi North of Co Rd 4, Weld, CO

Built 1974 Load: 33.7 t ADT: 171

County Road 29

Good

Over: Collins Lateral Canal

0.3 Mi N of Co Rd 84, Weld, CO

Built 1990 Load: 33.7 t ADT: 1,700

E MALL ENTRANCE

Good

Over: LOCAL DRAINAGE

.2 MI E SHERIDAN S 120TH, Adams, CO

Built 1997 Load: 33.7 t ADT: 1,245

Showing 6,651-6,700 of 8,965 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 Colorado's inventory picture to drill to a county or a specific span.

  • Browse counties in Colorado 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. Colorado 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.