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 ROAD 501

Good

Over: VALLECITO CRK DIVERSION

0.3 MI E OF N VALLECITO, La Plata, CO

Built 1995 Load: 33.8 t ADT: 749

IRR# COUNTY RD 522

Good

Over: ALLISON DITCH

1 MI W OF CR 523, La Plata, CO

Built 1993 Load: 33.8 t ADT: 127

SH 63 ML

Good

Over: SPRINGDALE CANAL

27.4 MI N OF JCT US 34, Logan, CO

Built 1965 Load: 33.8 t ADT: 2,000

Marshall Rd(Cr 51)

Good

Over: South Boulder Creek

0.5 Mi N of St Hwy 170, Boulder, CO

Built 1988 Load: 33.8 t ADT: 318

SH 392 ML

Good

Over: GREELEY CANAL NO 2

0.1 MI E OF JCT US 85, Weld, CO

Built 1965 Load: 33.8 t ADT: 5,600

SH 52 ML

Good

Over: CANAL

7.7 MI E OF JCT I25, Weld, CO

Built 1959 Load: 33.8 t ADT: 13,000

County Road 9

Good

Over: South Platte River

1.2 Mi N of Co Rd W, Morgan, CO

Built 1980 Load: 33.8 t ADT: 159

COUNTY ROAD JJ

Good

Over: BUFFALO CREEK

0.7 MI E OF CR 25, Prowers, CO

Built 1988 Load: 33.8 t ADT: 41

County Road 29

Good

Over: Collins Lateral Canal

0.3 Mi N of Co Rd 84, Weld, CO

Built 1992 Load: 33.8 t ADT: 1,700

County Road X

Good

Over: Trib. of N. Sand Creek

0.85 Mi. N. Co. Rd. 3, Yuma, CO

Built 1997 Load: 33.8 t ADT: 31

I25 WBND RAMP

Good

Over: GLOBEVILLE ROAD

IN DENVER, Denver, CO

Built 1996 Load: 33.9 t ADT: 125,500

SH 82 ML

Good

Over: ROARING FORK RIVER

2.3 MI. N. OF BASALT, Eagle, CO

Built 1987 Load: 33.9 t ADT: 21,000

US 40 ML

Good

Over: DRAW

7.6 MI SE OF WILDHORSE, Cheyenne, CO

Built 1959 Load: 33.9 t ADT: 3,800

US 50 ML

Good

Over: SHEEP BASIN

6.2 MI EAST OF JCT SH 69, Fremont, CO

Built 1996 Load: 33.9 t ADT: 2,500

SH 114 ML

Good

Over: SAGUACHE CREEK

13.4 MI W OF SAGUACHE, Saguache, CO

Built 2003 Load: 33.9 t ADT: 370

COUNTY ROAD G

Good

Over: ORCHARD MESA CANAL

JUST E OF RD 38.75, Mesa, CO

Built 1991 Load: 33.9 t ADT: 95

US 550 NBND RMP

Good

Over: US160 ML WILSON GULCH

DURANGO, La Plata, CO

Built 2010 Load: 33.9 t ADT: 3,545

LINCOLN AVENUE EB

Good

Over: CHERRY CREEK

1.0 MI W OF HIGHWAY 83, Douglas, CO

Built 1998 Load: 33.9 t ADT: 14,840

PINE CREST DR

Good

Over: SKI RUN

JUST E OF SLOPESIDE LN, Pitkin, CO

Built 1998 Load: 33.9 t ADT: 235

SH 60 EB ML

Good

Over: I-25 ML

AT JCT I 25 ML, Weld, CO

Built 2020 Load: 34.0 t ADT: 5,100

US 85 SB OFF RAMP

Good

Over: TERRAIN

SBND OFF RAMP D, Douglas, CO

Built 2014 Load: 34.0 t ADT: 2,540

COUNTY ROAD 301

Good

Over: ARKANSAS RIVER

.2 MI NE OF US 285, Chaffee, CO

Built 1990 Load: 34.0 t ADT: 198

PRIVATE DRIVE

Good

Over: MAIN STREAM

0.15 MI N OF DRENNAN ROAD, El Paso, CO

Built 1982 Load: 34.0 t ADT: 82

14TH AVE

Good

Over: CHERRY CREEK

14TH AVE AT SPEER BLVD, Denver, CO

Built 2020 Load: 34.0 t ADT: 7,923

CENTRAL PARK BLVD

Good

Over: SMITHRD/ UPRR/ SAND CK

0.5 MI S OF I70, Denver, CO

Built 2012 Load: 34.0 t ADT: 27,939

63RD AVENUE

Good

Over: BLUE GRAMA CHANNEL

E TELLURIDE & 63RD AVE, Denver, CO

Built 2020 Load: 34.0 t ADT: 4,047

SH 44 WB

Good

Over: OBRIAN CANAL

BETWEEN SH 2 AND I76, Adams, CO

Built 2013 Load: 34.0 t ADT: 9,329

E-470 NB

Good

Over: York Street

44.83 MI FROM I25, Adams, CO

Built 2003 Load: 34.0 t ADT: 18,236

I 70 ML WBND

Good

Over: HILLSIDE

2.7 MI E OF GLNWD SPGS., Garfield, CO

Built 1986 Load: 34.0 t ADT: 8,500

US 6 ML

Good

Over: GARRISON STREET

IN LAKEWOOD, Jefferson, CO

Built 2015 Load: 34.0 t ADT: 100,000

SH 470 ML WBND

Good

Over: ACRES GREEN DRIVE

1.3 M W OF JCT I 25, Douglas, CO

Built 1984 Load: 34.0 t ADT: 47,500

LONG ROAD

Good

Over: LITTLE DRY CREEK

.5 MI E OF UNIVERSITY, Arapahoe, CO

Built 1989 Load: 34.0 t ADT: 3,964

US 24 ML

Good

Over: DRAW

9.1 MI NE OF JCT US 285, Chaffee, CO

Built 1937 Load: 34.0 t ADT: 6,700

SB SH 21 RAMP

Good

Over: NB SH 21 RAMP

SH21 AND I25 INT, El Paso, CO

Built 2021 Load: 34.0 t ADT: 37,000

SH 94 ML

Good

Over: STEEL FORK

18.5 MI W OF PUNKIN CENTE, Lincoln, CO

Built 1968 Load: 34.0 t ADT: 630

SH 96 ML

Good

Over: DRAW

11.1 MI E OF ARLINGTON, Kiowa, CO

Built 2011 Load: 34.0 t ADT: 420

SH 96 ML

Good

Over: BLACK DRAW

3.6 MI NE OF SUGAR CITY, Crowley, CO

Built 2011 Load: 34.0 t ADT: 340

SH 89 ML

Good

Over: ARKANSAS RIVER

JUST S OF HOLLY, Prowers, CO

Built 2011 Load: 34.0 t ADT: 560

Jasper Lake Road

Good

Over: Big Thompson River

0.1 Mi N of US Hwy 34, Larimer, CO

Built 2014 Load: 34.0 t ADT: 25

COUNTY ROAD K

Good

Over: ADOBE CREEK

.2 MI EAST OF CR 20, Mesa, CO

Built 2012 Load: 34.0 t ADT: 2,268

CO RD 52

Good

Over: HILLSBOROUGH DITCH

0.5 MI E OF CO RD 13, Weld, CO

Built 2012 Load: 34.0 t ADT: 339

COUNTY ROAD 250

Good

Over: ANIMAS RIVER

.2 MI E OF SH 550, La Plata, CO

Built 1989 Load: 34.1 t ADT: 457

17TH CHESTNUT WE

Good

Over: UNION STATION BUS DEPOT

0.1 MI W OF UNION STATION, Denver, CO

Built 2012 Load: 34.1 t ADT: 7,803

County Road 33

Good

Over: Pawnee Creek

1.1 Mi. N. of CR 18, Logan, CO

Built 1991 Load: 34.1 t ADT: 246

County Road 29

Good

Over: Dry Creek

100 Ft N of Co Rd 18E, Larimer, CO

Built 1986 Load: 34.1 t ADT: 3,219

COUNTY ROAD 33

Good

Over: GOVERNMENT HIGHLINE CANL

NORTH OF CR 33 AND F 5/8, Mesa, CO

Built 2008 Load: 34.1 t ADT: 1,628

County Road X.5

Good

Over: Riverside Canal

0.9 Mi E of St Hwy 144, Morgan, CO

Built 1997 Load: 34.1 t ADT: 445

US 85 ML SBND

Good

Over: LARIMER-WELD CANAL

0.7 MI S OF JCT SH 14, Weld, CO

Built 1966 Load: 34.2 t ADT: 4,250

EVANS AVENUE

Good

Over: NORTH CHEYENNE CREEK

JUST S OF CHEYENNE BLVD., El Paso, CO

Built 2018 Load: 34.2 t ADT: 848

SB QUEBEC ST

Good

Over: CHERRY CREEK

QUEBEC AT CHERRY CREEK DR, Denver, CO

Built 2007 Load: 34.2 t ADT: 15,084

Showing 6,701-6,750 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.