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

County Rd 43

Good

Over: N. Fork Big Thompson

0.5 MI E of Horseshoe Rd, Larimer, CO

Built 2016 Load: 45.4 t ADT: 415

County Rd 43

Good

Over: N. Fork Big Thompson

0.7 MI E of Horseshoe Rd, Larimer, CO

Built 2016 Load: 45.4 t ADT: 415

County Rd 43

Good

Over: N. Fork Big Thompson

1.0 MI E of Horseshoe Rd, Larimer, CO

Built 2016 Load: 45.4 t ADT: 415

County Rd 43

Good

Over: N. Fork Big Thompson

1.1 MI E of Horseshoe Rd, Larimer, CO

Built 2016 Load: 45.4 t ADT: 415

West Creek Road

Good

Over: West Creek

0.3 MI W of CR 43, Larimer, CO

Built 2016 Load: 45.4 t ADT: 7

West Creek Road

Good

Over: West Creek

0.2 MI W OF CR 43, Larimer, CO

Built 2017 Load: 45.4 t ADT: 7

West Creek Road

Good

Over: West Creek

0.1 MI W OF CR 43, Larimer, CO

Built 2016 Load: 45.4 t ADT: 21

I-25 NB ML

Good

Over: GREASEWOOD ARROYO

11.7 MI N OF WALSENBURG, Huerfano, CO

Built 2004 Load: 45.4 t ADT: 7,000

County Road 25

Good

Over: Upper Platte Beaver Cnl

0.1 Mi N of Co Rd R, Morgan, CO

Built 1999 Load: 45.4 t ADT: 172

SH 145 ML

Good

Over: PRIEST CREEK

26 MILES N OF DOLORES, Montezuma, CO

Built 1999 Load: 45.4 t ADT: 1,800

I 25 ML NBND

Good

Over: MISSOURI CREEK

4.2 MI N OF SH10-WLSNBRG., Huerfano, CO

Built 2011 Load: 45.4 t ADT: 6,500

US 160 ML

Good

Over: DRAW

30.6 MI E OF JCT SH 109, Baca, CO

Built 1995 Load: 45.4 t ADT: 250

COUNTY ROAD 18.9

Good

Over: I 25 ML

1.8 MI S. OF TRINIDAD, Las Animas, CO

Built 2022 Load: 45.4 t ADT: 12,000

County Road 26

Good

Over: Platte Valley Canal

0.1 Mi E of US Hwy 85, Weld, CO

Built 2017 Load: 45.4 t ADT: 116

US 36 ML

Good

Over: COAL CREEK

JUST E of SUPERIOR INT., Broomfield, CO

Built 2015 Load: 45.5 t ADT: 66,000

County Road 31

Good

Over: Antelope Draw

0.8 Mi N of Co Road AA, Morgan, CO

Built 2010 Load: 45.5 t ADT: 11

SH 12 ML

Good

Over: DRAW

10.7 MI SE OF MONUMENT PA, Las Animas, CO

Built 2000 Load: 45.5 t ADT: 520

County Road 22

Good

Over: Yampa River

0.4 Mi W of St Hwy 131, Routt, CO

Built 1984 Load: 45.6 t ADT: 660

RAMP FROM I225 SB

Good

Over: I 225 ML

SBND I225 TO ALAMEDA AVE., Arapahoe, CO

Built 2000 Load: 45.6 t ADT: 13,407

SH 82 ML WBND

Good

Over: SHALE BLUFFS

Just past Snomas Vilg INT, Pitkin, CO

Built 2000 Load: 45.6 t ADT: 9,000

HARLAN CIRCLE

Good

Over: SANDERSON GULCH

0.1 MI NORTH OF JEWELL, Jefferson, CO

Built 2002 Load: 45.6 t ADT: 317

Wagonwheel Gap Rd

Good

Over: Fourmile Creek

200 ft W of Lee Hill Dr, Boulder, CO

Built 2019 Load: 45.7 t ADT: 630

BRIGHTON BLVD

Good

Over: RACE COURT

0.6 Miles North of I-70, Denver, CO

Built 2018 Load: 45.7 t ADT: 6,710

SH 119 N/EBND

Good

Over: ST VRAIN CREEK

1.1 MI W OF JCT I-25, Weld, CO

Built 2008 Load: 45.7 t ADT: 15,500

I-25 ML NB

Good

Over: COUNTY ROAD 28

2 MI N OF JCT SH 119, Weld, CO

Built 2008 Load: 45.7 t ADT: 40,000

I-25 ML SBND

Good

Over: COUNTY ROAD 28

2 MI N OF JCT SH 119, Weld, CO

Built 2008 Load: 45.7 t ADT: 40,000

Sycamore Street

Good

Over: Arthur Ditch

Wood and Sycamore Inters., Larimer, CO

Built 2023 Load: 45.7 t ADT: 2,277

CO RD 742

Good

Over: TAYLOR RIVER

15.1 MI NE OF ALMONT, Gunnison, CO

Built 2001 Load: 45.7 t ADT: 943

SH 9 ML

Good

Over: CURRANT CREEK

11.4 MI NW OF JCT US 50, Fremont, CO

Built 2012 Load: 45.7 t ADT: 1,200

US 160 ML

Good

Over: WILDLIFE CROSSING

16.2 MI W OF PAGOSA SPRGS, Archuleta, CO

Built 2022 Load: 45.7 t ADT: 5,500

US 385 ML

Good

Over: US 138 ML

IN JULESBURG, Sedgwick, CO

Built 1988 Load: 45.8 t ADT: 1,400

COUNTY ROAD 252

Good

Over: WEST FORK CLEAR CREEK

JUST SOUTH OF EMPIRE, Clear Creek, CO

Built 1979 Load: 45.8 t ADT: 106

WB WEWATTA STREET

Good

Over: CHERRY CREEK

JUST EAST OF SPEER BLVD, Denver, CO

Built 1998 Load: 45.8 t ADT: 5,938

MERIDIAN BLVD

Good

Over: COTTONWOOD CREEK

0.8 MI WEST OF HAVANA, Douglas, CO

Built 1991 Load: 45.8 t ADT: 3,107

COUNTY ROAD 36

Good

Over: TRIB. OF HYDE CANAL

.3 MI N OF CR RR, Bent, CO

Built 1997 Load: 45.9 t ADT: 47

SH 2 ML

Good

Over: OBRIAN CANAL

0.3 MI S. OF JCT I 76, Adams, CO

Built 1999 Load: 45.9 t ADT: 16,034

CO RD 12

Good

Over: RUBY ANTHRACITE CREEK

7.4 MI W OF CRESTED BUTTE, Gunnison, CO

Built 1993 Load: 45.9 t ADT: 379

County Road 61

Good

Over: East Lewis Creek

1.1 MI N of Co Rd 52, Logan, CO

Built 1993 Load: 45.9 t ADT: 153

County Road 15

Good

Over: Rawhide Creek Tributary

0.05 mi S of CO RD 82, Larimer, CO

Built 1980 Load: 45.9 t ADT: 349

FSR 650

Good

Over: EMBARGO CREEK

11.3 MI WNW OF DEL NORTE, Saguache, CO

Built 1960 Load: 46.0 t ADT: 112

N Bridge Dr

Good

Over: Crystal River

0.6 Mi W of SH 133, Garfield, CO

Built 2000 Load: 46.0 t ADT: 430

COUNTY ROAD 306

Good

Over: COTTONWOOD CREEK

6 MI W OF US 24, Chaffee, CO

Built 1990 Load: 46.0 t ADT: 277

COUNTY ROAD J

Good

Over: LAKE MEREDITH INLET CNL

1.0 MI WEST OF CR 22, Crowley, CO

Built 1999 Load: 46.0 t ADT: 22

PANASONIC WAY

Good

Over: BLUE GRAMA CHANNEL

SW of TELLURIDE-PANASONIC, Denver, CO

Built 2019 Load: 46.0 t ADT: 7,516

TELLURIDE WAY

Good

Over: BLUE GRAMA CHANNEL

NW of TELLURIDE WAY-63RD, Denver, CO

Built 2020 Load: 46.0 t ADT: 4,047

US 36 ML

Good

Over: ROCK CREEK

_, Broomfield, CO

Built 2015 Load: 46.0 t ADT: 68,000

SH 21B NBND ML

Good

Over: BRIARGATE BLVD

NB POWERS BLVD NE CO Sp., El Paso, CO

Built 2014 Load: 46.0 t ADT: 25,000

SH 21B SBND ML

Good

Over: BRIARGATE BLVD

S. BND. POWERS BLVD., El Paso, CO

Built 2014 Load: 46.0 t ADT: 25,000

COUNTY ROAD 39.5

Good

Over: KICKING BIRD CANAL

JUST SOUTH OF CR A.5, Kiowa, CO

Built 1993 Load: 46.0 t ADT: 29

US 50 ML

Good

Over: LUBERS DRAINAGE DITCH

19 MI E OF LAS ANIMAS, Bent, CO

Built 2004 Load: 46.0 t ADT: 2,300

Showing 7,801-7,850 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.