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

SH 64 ML

Good

Over: DRAW

15 MI E OF JCT SH 139, Rio Blanco, CO

Built 2000 Load: 48.6 t ADT: 670

Confluence Dr.

Good

Over: 1st ST and UPRR

0.5 Mi W od SH50, Delta, CO

Built 2013 Load: 48.6 t ADT: 5,474

SH 95 ML(SHERIDAN)

Good

Over: US 36 ML

IN WESTMINSTER, Jefferson, CO

Built 2014 Load: 48.6 t ADT: 44,000

US 36 ML

Good

Over: LOWELL BLVD

0.5 MI W OF FEDERAL, Adams, CO

Built 2014 Load: 48.6 t ADT: 103,000

I70 ML EBND

Good

Over: DRIR

DENVER, Denver, CO

Built 2020 Load: 48.6 t ADT: 77,500

I 70 ML WBND

Good

Over: SH 35 ML

DENVER, Denver, CO

Built 2020 Load: 48.6 t ADT: 77,500

E-470 SB

Good

Over: Piney Creek

9.57 MI FROM I25, Arapahoe, CO

Built 1996 Load: 48.6 t ADT: 24,242

CR 8 (Erie Pkwy)

Good

Over: Coal Creek

0.3 Mi East of Co Rd 1.5, Weld, CO

Built 2020 Load: 48.6 t ADT: 16,353

US 6 Ramp to I-25

Good

Over: BRYANT STREET

.3 MI W of I-25, Denver, CO

Built 2016 Load: 48.6 t ADT: 134,000

SH 83 ML/PARKER RD

Good

Over: HAMPDEN AVE.

IN AURORA, Arapahoe, CO

Built 2003 Load: 48.6 t ADT: 74,000

NBND US 285

Good

Over: COUNTY ROAD 72

NB US 285 AND CR 72, Park, CO

Built 2012 Load: 48.6 t ADT: 4,050

SBND US 285

Good

Over: COUNTY ROAD 72

SB US 285 & CR 72, Park, CO

Built 2012 Load: 48.6 t ADT: 4,050

59th Ave.

Good

Over: Greeley #3 Ditch

0.8 mi N of 4th Avenue, Weld, CO

Built 2013 Load: 48.6 t ADT: 7,309

US 50 ML

Good

Over: PURCELL BLVD

2.3 MI W of SH45, Pueblo, CO

Built 2022 Load: 48.6 t ADT: 36,000

RIO GRAND ST

Good

Over: SLAUGHTERHOUSE GULCH

.2 MI N OF LITTLETON BLVD, Arapahoe, CO

Built 2022 Load: 48.6 t ADT: 2,289

County Road 6

Good

Over: Weldona Valley Ditch

1.0 Mi N of SH 144, Morgan, CO

Built 2005 Load: 48.6 t ADT: 72

County Road V

Good

Over: Riverside Canal

0.1 Mi E of CO Rd 19.5, Morgan, CO

Built 2018 Load: 48.6 t ADT: 56

US 160 ML

Good

Over: WILLOW CREEK

1.8 MI E OF JCT SH 149, Rio Grande, CO

Built 1977 Load: 48.6 t ADT: 4,800

US 350 ML

Good

Over: DRAW

3.7 MILES NE OF MODEL, Las Animas, CO

Built 1980 Load: 48.6 t ADT: 710

COUNTY ROAD 8

Good

Over: COW CREEK

5.0 MI E OF US 550, Ouray, CO

Built 1987 Load: 48.6 t ADT: 164

CAMERON DRIVE

Good

Over: OBRIAN CANAL

SE OF I-76/120TH INT., Adams, CO

Built 2001 Load: 48.8 t ADT: 151

COUNTY ROAD 16

Good

Over: PLUM CREEK

1.0 MILE WEST OF SANTA FE, Douglas, CO

Built 2010 Load: 48.8 t ADT: 269

CO RD 864

Good

Over: LITTLE CIMARRON RIVER

12.7 MI NE OWL CK PASS, Gunnison, CO

Built 1991 Load: 48.8 t ADT: 12

US 6 ML

Good

Over: UP RR

E. EDGE OF CLIFTON, Mesa, CO

Built 1999 Load: 48.8 t ADT: 6,900

COUNTY RD 45.4

Good

Over: NAVRICIO CREEK

0.1 MI S CR 54.2, Las Animas, CO

Built 1990 Load: 48.8 t ADT: 19

COUNTY ROAD 29

Good

Over: SOUTH RUSH CREEK

2.2 MILES S OF COLO 94, Lincoln, CO

Built 1992 Load: 48.8 t ADT: 18

COUNTY ROAD 31

Good

Over: RED MOUNTAIN CREEK

0.7 MI E US 550 at MP 83, Ouray, CO

Built 1992 Load: 48.8 t ADT: 26

120TH AVENUE

Good

Over: LOCAL DRAINAGE

0.8 MI EAST OF PICADILLY, Adams, CO

Built 1995 Load: 48.9 t ADT: 3,545

MIDLAND AVENUE

Good

Over: ROARING FORK RIVER

.10 MI S OF TWO RIVERS RD, Eagle, CO

Built 1998 Load: 49.0 t ADT: 2,927

SH 52 ML

Good

Over: I 76 ML

9.6 MI E OF JCT SH 85, Weld, CO

Built 2000 Load: 49.0 t ADT: 9,100

HAYSTACK DRIVE

Good

Over: MAYERS GULCH

2 MI E OF EAGLE RANCH RD, Eagle, CO

Built 2014 Load: 49.0 t ADT: 56

Redwood Street

Good

Over: Lake Canal

At Cajetan Street, Larimer, CO

Built 2004 Load: 49.0 t ADT: 1,585

County Road 9

Good

Over: Highline Canal

0.1 Mi. N. of Co. Rd. 30, Sedgwick, CO

Built 1999 Load: 49.0 t ADT: 14

PINE CREST DR

Good

Over: SKI RUN

JUST E OF SPRUCE RIDGE LN, Pitkin, CO

Built 1998 Load: 49.0 t ADT: 359

SH 207 ML

Good

Over: CATLIN CANAL

IN MANZANOLA, Otero, CO

Built 1963 Load: 49.1 t ADT: 1,200

COUNTY ROAD 501

Good

Over: LOS PINOS RIVER

7.2 MI NNW OF BAYFIELD, La Plata, CO

Built 1945 Load: 49.2 t ADT: 2,112

US 85 ML

Good

Over: SPRING CREEK

1.1 MI N OF PIERCE, Weld, CO

Built 2005 Load: 49.2 t ADT: 5,100

County Road 19

Good

Over: Sullivan Ditch

0.5 Mi N of Co Rd 22, Weld, CO

Built 1993 Load: 49.2 t ADT: 4,259

COUNTY ROAD N

Good

Over: ALKALI CANYON

1.5 MI W OF SH 491, Montezuma, CO

Built 2023 Load: 49.3 t ADT: 385

WESTCLIFF PKWY

Good

Over: BIG DRY CREEK

.2 MI SE OF CHURCH RANCH, Jefferson, CO

Built 1996 Load: 49.3 t ADT: 4,806

SB I225 RAMP TO 83

Good

Over: RTD UNDERPASS R

IN AURORA, Arapahoe, CO

Built 2003 Load: 49.4 t ADT: 26,000

County Road 27

Good

Over: New Cache La Poudre Cana

0.5 MI S of St Hwy 392, Weld, CO

Built 2009 Load: 49.5 t ADT: 136

COUNTY ROAD 49

Good

Over: N. FORK CIMARRON RIVER

1.2 MI N OF CR T, Baca, CO

Built 1999 Load: 49.6 t ADT: 56

COLUMBINE STREET

Good

Over: I 70 ML

INT OF I70 AND COLUMBINE, Denver, CO

Built 2019 Load: 49.6 t ADT: 8,070

SH 265 ML

Good

Over: SAND CREEK

COMMERCE CITY, Adams, CO

Built 1999 Load: 49.6 t ADT: 6,500

Access Road

Good

Over: Big Thompson River

30 ft S of US Hwy 34, Larimer, CO

Built 2019 Load: 49.6 t ADT: 5

Moodie Street

Good

Over: Big Thompson River

25 Ft S of US Hwy 34, Larimer, CO

Built 2019 Load: 49.6 t ADT: 6

COUNTY ROAD 24

Good

Over: GRAND VALLEY CANAL

AT INTERSECTION W/ RD I, Mesa, CO

Built 2019 Load: 49.6 t ADT: 1,964

ALLEY

Good

Over: WEIR GULCH

ALLEY E OF PERRY ST, Denver, CO

Built 1976 Load: 49.7 t ADT: 26

I 25 ML SBND

Good

Over: PINE CREEK

1.4 MI N OF JCT I-25 BUS, El Paso, CO

Built 2002 Load: 49.7 t ADT: 58,000

Showing 7,951-8,000 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.