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

US 6 ML

Good

Over: WARSON CREEK

1 MI E OF PALISADE, Mesa, CO

Built 1951 Load: 38.1 t ADT: 1,200

I25 NBND OFF RAMP

Good

Over: NORTH COMMERCIAL STREET

I25 OVER CITY STREET, Las Animas, CO

Built 2010 Load: 38.1 t ADT: 16,000

NFSR 250

Good

Over: ALUM CREEK

29.6 MI ON FSR 250, Conejos, CO

Built 2020 Load: 38.2 t ADT: 47

STEPHEN D HOGAN PK

Good

Over: SAND CREEK

0.2 MI E OF SH30, Arapahoe, CO

Built 2019 Load: 38.2 t ADT: 7,470

County Road 81

Good

Over: Lefthand Creek

250 ft N of Lee Hill Dr, Boulder, CO

Built 2019 Load: 38.2 t ADT: 735

County Rd 650

Good

Over: Escalante Creek

2 MI SW of SH 50, Delta, CO

Built 2017 Load: 38.2 t ADT: 88

US 6 RAMP B

Good

Over: I 25 ML

N SIDE OF I-25 INT DEN., Denver, CO

Built 2014 Load: 38.2 t ADT: 136,000

19TH ST

Good

Over: US 6 ML

1.0 MI S of SH58, Jefferson, CO

Built 2017 Load: 38.2 t ADT: 2,000

CALEY AVE

Good

Over: LITTLES CREEK

0.15 MI E OF WINDERMERE, Arapahoe, CO

Built 2021 Load: 38.2 t ADT: 734

SH 52 ML

Good

Over: KIOWA CREEK

9.7 MI E OF JCT SH 79, Weld, CO

Built 1992 Load: 38.3 t ADT: 650

YORK STREET

Good

Over: GREENWAY CHANNEL

YORK ST / GRNWAY CHANNEL, Denver, CO

Built 2020 Load: 38.3 t ADT: 16,808

WASHINGTON STREET

Good

Over: SH 58 ML

IN GOLDEN, Jefferson, CO

Built 2010 Load: 38.3 t ADT: 11,538

SH 95 ML

Good

Over: SLOAN LAKE DRAINAGE

IN DENVER, Denver, CO

Built 1982 Load: 38.3 t ADT: 31,000

EMERG. ACCESS RD

Good

Over: WEAVER CREEK

E OF APTS SW KIPLING ST, Jefferson, CO

Built 2002 Load: 38.3 t ADT: 9

PRINGLE STREET

Good

Over: ANDERSON ARROYO

1000 FEET NW OF SH 50, Otero, CO

Built 1988 Load: 38.3 t ADT: 189

STERNE/APACHE

Good

Over: LITTLES CREEK

.3 MI WEST OF BROADWAY, Arapahoe, CO

Built 2005 Load: 38.3 t ADT: 2,820

County Road 86

Good

Over: Owl Creek

0.90 Mi E of Cr Rd 45, Weld, CO

Built 2001 Load: 38.3 t ADT: 28

US 40 ML

Good

Over: COLORADO RIVER

19.2 MI E OF JCT SH 9, Grand, CO

Built 1987 Load: 38.4 t ADT: 3,400

I 70 ML EBND

Good

Over: DRAW

34.4 MI E OF JCT SH 65, Garfield, CO

Built 1977 Load: 38.4 t ADT: 10,000

RAMP TO I 70 WBND

Good

Over: MAMM CREEK

4.5MI E OF RIFLE, Garfield, CO

Built 1977 Load: 38.4 t ADT: 721

US 24 ML

Good

Over: LANDSMAN CREEK

1.3 MI W OF BETHUNE, Kit Carson, CO

Built 1998 Load: 38.4 t ADT: 1,000

I 25 ML SBND

Good

Over: ROCKRIMMON BLVD.

IN COLORADO SPGS, El Paso, CO

Built 2008 Load: 38.4 t ADT: 57,000

US 50 ML

Good

Over: SMITH HOLLOW

7.5 MI EAST OF FOWLER, Otero, CO

Built 1997 Load: 38.4 t ADT: 4,700

County Road 46

Good

Over: Iliff Platte Valley Dtch

1.6 Mi. E of St Hwy 113, Logan, CO

Built 2002 Load: 38.4 t ADT: 155

County Road X

Good

Over: Weldon Valley Ditch

0.5 Mi E Co. Rd. 1, Morgan, CO

Built 2005 Load: 38.4 t ADT: 281

County Road 23

Good

Over: New Cache La Poudre Cana

0.6 Mi No of Co Rd 66, Weld, CO

Built 1999 Load: 38.4 t ADT: 6,932

SH 14 ML

Good

Over: COLLINS LATERAL CANAL

3.6 MI W OF AULT, Weld, CO

Built 1957 Load: 38.5 t ADT: 8,900

WB MRTN LTHR KING

Good

Over: WESTERLY CREEK

JUST E OF BEELER STREET, Denver, CO

Built 2005 Load: 38.5 t ADT: 11,347

EB MRTN LTHR KING

Good

Over: WESTERLY CREEK

JUST E OF BEELER STREET, Denver, CO

Built 2005 Load: 38.5 t ADT: 9,627

PENA BLVD NBND RMP

Good

Over: AIRPORT BLVD SBND

PENA BLVD OVER I70 ML, Adams, CO

Built 1993 Load: 38.5 t ADT: 54,507

SH 74 ML

Good

Over: COLD SPRING GULCH

2 MI SE OF KITTREDGE, Jefferson, CO

Built 1999 Load: 38.5 t ADT: 3,300

SH 470 ML EBND

Good

Over: KEN CARYL RD

10.2 MI E - JCT I70 + SH, Jefferson, CO

Built 1987 Load: 38.5 t ADT: 29,000

Platte Street

Good

Over: Pioneer Drainage Ditch

At 12th Avenue, Logan, CO

Built 1995 Load: 38.5 t ADT: 1,364

I25 ML NBND

Good

Over: SH56 ML

7 MI N OF SH66, Weld, CO

Built 2022 Load: 38.6 t ADT: 7,400

120TH AVENUE

Good

Over: FULTON DITCH

0.6 MI E OF BRIGHTON RD, Adams, CO

Built 2005 Load: 38.6 t ADT: 17,487

120TH AVENUE

Good

Over: LOCAL DRAINAGE

INT OF LAREDO AND 120TH, Adams, CO

Built 2005 Load: 38.6 t ADT: 1,414

CENTRAL PARK BLVD

Good

Over: LOCAL DRAINAGE

0.25 MI S OF 56TH AVE, Denver, CO

Built 2016 Load: 38.6 t ADT: 14,076

HARLAN/WEST.BLVD.

Good

Over: US 36 ML

BETWEEN 92ND & 104TH, Jefferson, CO

Built 2001 Load: 38.6 t ADT: 5,199

SH 44 EB

Good

Over: OBRIAN CANAL

BETWEEN SH 2 AND I76, Adams, CO

Built 2013 Load: 38.6 t ADT: 8,829

CLAYTON STREET

Good

Over: I 70 ML

INT OF I70 AND CLAYTON, Denver, CO

Built 2019 Load: 38.6 t ADT: 5,970

OUZEL LANE

Good

Over: BRUSH CREEK

S OF BRUSH CREEK RD, Eagle, CO

Built 2002 Load: 38.6 t ADT: 601

SH 74 EBND

Good

Over: TROUBLESOME CREEK

S OF BERGEN PARK, Jefferson, CO

Built 1996 Load: 38.6 t ADT: 8,500

RAMP TO US 40 ML

Good

Over: RAMP TO US 40 ML R

N.W. CORNER OF I25/SH40, Denver, CO

Built 1988 Load: 38.6 t ADT: 49,000

US 285 ML NBND

Good

Over: PIERCE STREET

1 MI W OF JCT SH 95, Jefferson, CO

Built 2010 Load: 38.6 t ADT: 27,500

US 285 ML SBND

Good

Over: PIERCE STREET

1 MI W OF JCT SH 95, Jefferson, CO

Built 2010 Load: 38.6 t ADT: 27,500

I 70 ML WBND

Good

Over: COUNTY ROAD 145

2.7 MI W OF STRASBURG SPU, Arapahoe, CO

Built 1997 Load: 38.6 t ADT: 8,500

SIMMS STREET

Good

Over: NORTH COON CREEK

0.2 MI SOUTH OF BELLEVIEW, Jefferson, CO

Built 2002 Load: 38.6 t ADT: 13,889

I 25 ML

Good

Over: UPRR

0.25 MI N OF JCT SH 50 E, Pueblo, CO

Built 2019 Load: 38.6 t ADT: 52,000

US 50 ML

Good

Over: DRAW

7.75 MI E of LAS ANIMAS, Bent, CO

Built 2022 Load: 38.6 t ADT: 2,600

County Line Road

Good

Over: Spring Gulch #2

0.20 MI N. OF E 9TH AVE, Boulder, CO

Built 2021 Load: 38.6 t ADT: 15,509

Showing 7,201-7,250 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.