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

E-470 NB

Good

Over: Ramp E

20.88 MI FROM I25, Adams, CO

Built 2006 Load: 47.4 t ADT: 18,092

I 70 ML WBND

Good

Over: WAGON GULCH

1.0 MI SW OF SHOSONE DAM, Garfield, CO

Built 1988 Load: 47.4 t ADT: 8,500

US 40 ML

Good

Over: DRAW

DUE W OF WILDHORSE, Cheyenne, CO

Built 1933 Load: 47.4 t ADT: 3,300

SH 257 ML

Good

Over: LARIMER COUNTY CANAL

3.5 MI N. OF SH392/WINDSO, Weld, CO

Built 1984 Load: 47.5 t ADT: 5,100

County Road 3-R

Good

Over: TRIB. ST. CHARLES RIVER

8.2 MI ESE OF BEULAH, Pueblo, CO

Built 1988 Load: 47.5 t ADT: 169

TINCUP ROAD 765

Good

Over: WILLOW CREEK

25.5 MI NE OF ALMONT CO, Gunnison, CO

Built 2020 Load: 47.6 t ADT: 363

SH 14 ML

Good

Over: CACHE LA POUDRE RIVER

1 MI E OF JCT 287, Larimer, CO

Built 2015 Load: 47.6 t ADT: 26,000

Logan Mill Road

Good

Over: Four Mile Creek

20 ft W of Four Mi Cny Dr, Boulder, CO

Built 2019 Load: 47.6 t ADT: 238

Dillon Road

Good

Over: Rock Creek

0.3 Mi W of Hwy 287, Boulder, CO

Built 2019 Load: 47.6 t ADT: 451

BISCAY STREET

Good

Over: Local Drainage

JUST N OF 104TH AVENUE, Adams, CO

Built 2008 Load: 47.6 t ADT: 10

RAMP TO UNION

Good

Over: TEMPLETON GAP FLOODWAY

AUSTIN BLUFFS PKWY/UNION, El Paso, CO

Built 2009 Load: 47.6 t ADT: 6,359

SH 86 ML

Good

Over: Mitchell Gulch

1 MI W OF FRANKTOWN, Douglas, CO

Built 2002 Load: 47.6 t ADT: 10,000

SB I25 ML

Good

Over: NB SH 21 RAMP

SH21 AND I25 INT, El Paso, CO

Built 2021 Load: 47.6 t ADT: 66,000

SH 120 ML

Good

Over: HARDSCRABBLE CREEK

2.8 MI E JCT SH 115, Fremont, CO

Built 2009 Load: 47.6 t ADT: 800

Centerra Parkway

Good

Over: Greeley Loveland Canal

0.1 Mi N of US Hwy 34, Larimer, CO

Built 2005 Load: 47.6 t ADT: 13,787

COUNTY ROAD 57

Good

Over: BIG CREEK

.7 MI N OF CR KE, Mesa, CO

Built 1988 Load: 47.6 t ADT: 218

CR 25/25TH LANE

Good

Over: BOOTH CANAL

300 FT S of US50, Pueblo, CO

Built 1999 Load: 47.6 t ADT: 76

County Road 47

Good

Over: New Cache La Poudre Cana

0.7 Mi N of SH 392, Weld, CO

Built 2001 Load: 47.6 t ADT: 760

E-470 SB

Good

Over: Ramp E

20.88 MI FROM I25, Adams, CO

Built 2006 Load: 47.7 t ADT: 17,985

E-470 NB

Good

Over: Colfax Avenue

20.32 MI FROM I25, Arapahoe, CO

Built 2006 Load: 47.8 t ADT: 18,465

HESS ROAD

Good

Over: LIVESTOCK CROSSING

2.13M E. OF S. HAVANA ST., Douglas, CO

Built 2012 Load: 47.9 t ADT: 9,535

BIG CIMARRON RD

Good

Over: CIMARRON DITCH

7.6 MI S of SH50, Montrose, CO

Built 2018 Load: 48.0 t ADT: 189

N. 63rd St (CR39)

Good

Over: Leggett Ditch

0.4 MI N of SH7, Boulder, CO

Built 2015 Load: 48.0 t ADT: 3,275

US 40 ML

Good

Over: Sage Creek

5 mi. E of Hayden, Routt, CO

Built 2015 Load: 48.0 t ADT: 5,100

Riverside Drive

Good

Over: Spring Creek

0.2 Mi S of Prospect Rd, Larimer, CO

Built 2019 Load: 48.0 t ADT: 1,455

JACKSON CREEK

Good

Over: LEATHER CHAPS DR

.7MI E of JACKSON CR PKWY, El Paso, CO

Built 2019 Load: 48.0 t ADT: 3,367

FEDERAL PARKWAY

Good

Over: BIG DRY CREEK

.6 MI N OF 120TH AVE, Adams, CO

Built 2002 Load: 48.0 t ADT: 14,581

I 25 ML NB+SB+SR

Good

Over: GREELEY-LOVELAND DITCH

0.6 MI NO OF JCT US 34, Larimer, CO

Built 1947 Load: 48.1 t ADT: 38,000

SH 52 ML

Good

Over: ANTELOPE CREEK

19 MI N OF JCT SH 79, Morgan, CO

Built 1977 Load: 48.1 t ADT: 350

BAYOU GULCH RD

Good

Over: CHERRY CREEK

.65 MI W OF PARKER RD, Douglas, CO

Built 2002 Load: 48.1 t ADT: 4,817

US 285 ML NBND

Good

Over: SH 121 ML

HAMPDEN/WADSWORTH, Jefferson, CO

Built 2012 Load: 48.1 t ADT: 24,500

US 285 ML SBND

Good

Over: SH 121 ML

HAMPDEN/WADSWORTH, Jefferson, CO

Built 2012 Load: 48.1 t ADT: 24,500

COUNTY ROAD 2

Good

Over: UNCOMPAHGRE RIVER

0.2 MI E OF US 550, Ouray, CO

Built 1990 Load: 48.2 t ADT: 32

NFSR 770.1

Good

Over: S. FORK MIGHIGAN RIVER

4.5 MI. S. OF S.H. 14, Jackson, CO

Built 1966 Load: 48.3 t ADT: 17

COUNTY ROAD 73

Good

Over: CUB CREEK

JUST SE OF SPILLWAY, Jefferson, CO

Built 2000 Load: 48.3 t ADT: 15,760

WB RIDGEGATE PKWY

Good

Over: HAPPY CANYON CREEK

0.73 MI E OF I25, Douglas, CO

Built 2019 Load: 48.3 t ADT: 17,120

COUNTY ROAD 16

Good

Over: GOVT. HIGHLINE CANAL

0.5 MI N OF RD Q, Mesa, CO

Built 2020 Load: 48.3 t ADT: 243

County Road 10

Good

Over: South Fork White River

7.27 Mi E of Co Rd 8, Rio Blanco, CO

Built 2015 Load: 48.3 t ADT: 77

COLLEGE ST / CEDAR

Good

Over: PURGATOIRE RIVER

BTW NEVADA AND CONVENT, Las Animas, CO

Built 1993 Load: 48.3 t ADT: 2,095

Third Street

Good

Over: Boxelder Creek

0.3 M S of R. Reagan Ave., Larimer, CO

Built 2005 Load: 48.3 t ADT: 1,337

BUENA VISTA BLVD

Good

Over: LOCAL DRAINAGE

0.1 MI SW OF ROCKY MNT DR, Douglas, CO

Built 1989 Load: 48.4 t ADT: 152

I 25 SBND ML

Good

Over: UNIVERSITY BLVD

IN DENVER, Denver, CO

Built 2003 Load: 48.4 t ADT: 98,500

COUNTY ROAD 19

Good

Over: LITTLE SALT WASH

0.4 MI N OF ROAD L, Mesa, CO

Built 2005 Load: 48.4 t ADT: 953

US 350 ML

Good

Over: DRAW

5.2 MILES NE OF MODEL, Las Animas, CO

Built 1980 Load: 48.4 t ADT: 710

PERRY STREET

Good

Over: LAKEWOOD GULCH

.10 MI NORTH OF 9TH AVE, Denver, CO

Built 2001 Load: 48.5 t ADT: 5,422

Y CAMP ROAD

Good

Over: HORSE CREEK

INT OF HWY 67/Y CAMP RD, Douglas, CO

Built 1991 Load: 48.5 t ADT: 122

County Road 69

Good

Over: South Platte River

0.2 Mi N of Co Rd 380, Weld, CO

Built 1996 Load: 48.5 t ADT: 126

US 138 ML

Good

Over: COTTONWOOD CREEK

10.7 MI N OF SH 55, Sedgwick, CO

Built 1978 Load: 48.6 t ADT: 370

112TH AVENUE

Good

Over: FULTON DITCH

350 FT E OF BRIGHTON ROAD, Adams, CO

Built 2021 Load: 48.6 t ADT: 4,010

CARLSON DRIVE

Good

Over: DRY CREEK

JUST S OF WOODMEN ROAD, El Paso, CO

Built 1986 Load: 48.6 t ADT: 399

Showing 7,901-7,950 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.