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

I 70 ML WBND

Good

Over: SH 13 ML

4.6 MI W OF JCT SILT SPUR, Garfield, CO

Built 1975 Load: 26.3 t ADT: 8,500

SH 82 ML

Good

Over: ROARING FORK RIVER

Near Basalt, Pitkin, CO

Built 1996 Load: 26.4 t ADT: 19,000

YOSEMITE STREET

Good

Over: GOLDSMITH GULCH

.1 MI S OF PRENTICE ST, Arapahoe, CO

Built 1992 Load: 26.4 t ADT: 6,548

County Road 25E

Good

Over: Redstone Creek Tributary

3.1 Mi N of Co Rd 24H, Larimer, CO

Built 1992 Load: 26.4 t ADT: 803

SH 10 ML

Good

Over: TIMPAS CREEK

1.3 MI E OF JCT SH 71, Otero, CO

Built 1985 Load: 26.4 t ADT: 610

County Road 84

Good

Over: Pierce Lateral Canal

0.5 Mi E of Co Rd 25, Weld, CO

Built 1990 Load: 26.4 t ADT: 95

I 70 FRONTAGE RD

Good

Over: DRAW SR

6.1 MI E. OF GENOA, Lincoln, CO

Built 1975 Load: 26.5 t ADT: 75

SH 90 ML

Good

Over: Montrose & Delta Canal

4.9 MI WEST OF MONTROSE, Montrose, CO

Built 1999 Load: 26.5 t ADT: 300

County Road E

Good

Over: Towaoc Canal

5 mi south of Cortez CO, Montezuma, CO

Built 1990 Load: 26.6 t ADT: 100

142.1

Good

Over: S.F. WILLIAMS FORK RIVER

NO DATA ENTERED, Grand, CO

Built 1968 Load: 26.6 t ADT: 50

NO DATA ENTERED

Good

Over: NO DATA ENTERED

NO DATA ENTERED, Eagle, CO

Built 2020 Load: 26.6 t ADT: 50

SKYGAZER STREET

Good

Over: LOCAL DRAINAGE

0.1 MI S OF RIM RIDGE, Douglas, CO

Built 2019 Load: 26.6 t ADT: 28

COUNTY LANE 3

Good

Over: COLORADO CANAL

.6 MI N OF SH 96, Crowley, CO

Built 1993 Load: 26.6 t ADT: 380

E-470 NB

Good

Over: Obrian Canal

34.42 MI FROM I25, Adams, CO

Built 2002 Load: 26.6 t ADT: 21,844

E-470 SB

Good

Over: Obrian Canal

34.42 MI FROM I25, Adams, CO

Built 2002 Load: 26.6 t ADT: 22,728

SH 82 ML

Good

Over: COUNTY ROAD

NEAR ASPEN, Pitkin, CO

Built 1994 Load: 26.6 t ADT: 22,000

EB RIDGEGATE PKWY

Good

Over: BADGER GULCH

1.7 MI E OF I25, Douglas, CO

Built 2019 Load: 26.6 t ADT: 16,730

County Road 40

Good

Over: Timnath Res. Outlet Cana

1.1 Mi E of Co Rd 5, Larimer, CO

Built 1982 Load: 26.6 t ADT: 1,572

CR 25 (95th Ave.)

Good

Over: Loveland Greeley Canal

0.1 Mi N of Co Rd 52, Weld, CO

Built 1962 Load: 26.6 t ADT: 198

Pine Street

Good

Over: Soda Creek

250 Feet NW of 9TH Street, Routt, CO

Built 2006 Load: 26.7 t ADT: 637

SH 66 ML

Good

Over: SOUTH PLATTE RIVER

.2 MI W OF 85, Weld, CO

Built 1988 Load: 26.7 t ADT: 9,100

SH 7 ML

Good

Over: I 25 ML

I25 LAFAYETTE INTERCHANGE, Adams, CO

Built 1987 Load: 26.7 t ADT: 27,000

US 50 ML WBND

Good

Over: SAND CREEK

4.0 MI W OF CANON CITY, Fremont, CO

Built 1993 Load: 26.7 t ADT: 4,150

US 287 ML

Good

Over: CLAY CREEK

10 M S of LAMAR, Prowers, CO

Built 1976 Load: 26.7 t ADT: 3,000

COUNTY ROAD 36

Good

Over: DOLORES RIVER

JUST E OF SH 145, Montezuma, CO

Built 1992 Load: 26.8 t ADT: 33

SH 14 ML

Good

Over: CACHE LA POUDRE RIVER

3.1 MI EAST OF CHAMBERS L, Larimer, CO

Built 1980 Load: 26.8 t ADT: 450

RIVERSIDE PARKWAY

Good

Over: LEACH CREEK

Just E of Redlands Pkwy, Mesa, CO

Built 2008 Load: 26.8 t ADT: 4,151

SH 96 ML

Good

Over: DRAW

5 MI E OF CROWLEY KIOWA C, Kiowa, CO

Built 1975 Load: 26.8 t ADT: 420

N 63rd St (CR39)

Good

Over: Lefthand Creek

0.4 Mi N of Niwot Rd, Boulder, CO

Built 2011 Load: 26.9 t ADT: 2,610

E-470 NB

Good

Over: Pena Boulevard

27.86 MI FROM I25, Denver, CO

Built 1996 Load: 26.9 t ADT: 22,748

I 70 ML EBND

Good

Over: UP RR

EAST OF DOTSERO INTERCHAN, Eagle, CO

Built 1980 Load: 26.9 t ADT: 8,500

SH 75 ML

Good

Over: UNNAMED DRAINAGE

1.4 SW OF JCT US 85, Arapahoe, CO

Built 2000 Load: 26.9 t ADT: 15,000

7TH STREET

Good

Over: CLEAR CREEK

W. OF ARGENTINE STREET, Clear Creek, CO

Built 2004 Load: 26.9 t ADT: 350

WB NWP Ramp

Good

Over: Rock Creek

5.70 MI FROM I-25, Broomfield, CO

Built 2002 Load: 26.9 t ADT: 2,300

County Road 6

Good

Over: Big Dry Creek

0.1 Mi E of Co Rd 19, Weld, CO

Built 1984 Load: 26.9 t ADT: 4,075

County Road P

Good

Over: Arikaree River

0.90 Mi N of Co Rd 11, Yuma, CO

Built 1987 Load: 26.9 t ADT: 11

LEV 5 SE TERM RAMP

Good

Over: 84TH AVENUE

SE CORNER TERM BLDG, Denver, CO

Built 2014 Load: 27.0 t ADT: 11,241

DEER CRK CANYON RD

Good

Over: DEER CREEK

1.4 MI E OF PHILLIPSBURG, Jefferson, CO

Built 1969 Load: 27.0 t ADT: 2,820

SH 165 ML

Good

Over: WILLIS CREEK

1.11 MI N OF JCT SH 78, Custer, CO

Built 1945 Load: 27.0 t ADT: 280

I 25 NBND RAMP

Good

Over: I 25 ML

0.5 MI N OF JCT SH 18 ML, Douglas, CO

Built 2021 Load: 27.1 t ADT: 1,128

Rossum Drive

Good

Over: Big Thompson River

0.2 Mi South of US 34, Larimer, CO

Built 2002 Load: 27.1 t ADT: 1,371

County Road KK

Good

Over: Bonny Dam Spillway

7 MI E OF SR 325, Yuma, CO

Built 1951 Load: 27.2 t ADT: 5

FSR105

Good

Over: CONEJOS RIVER

CONEJOS RIVER SADDLE, Conejos, CO

Built 2014 Load: 27.2 t ADT: 44

CONVERSE ROAD

Good

Over: LOST CREEK

0.1 MI S OF 144TH AVENUE, Adams, CO

Built 1997 Load: 27.2 t ADT: 59

CASCADE AVENUE

Good

Over: RAILROAD VAN BUREN

0.4 MI SOUTH OF FILLMORE, El Paso, CO

Built 2000 Load: 27.2 t ADT: 7,659

I 70 ML

Good

Over: COUNTY ROAD

1.1 MI E OF JCT US 40, Clear Creek, CO

Built 1965 Load: 27.2 t ADT: 37,000

JANITELL ROAD

Good

Over: FOUNTAIN CREEK

0.4 MI N OF CIRCLE DR, El Paso, CO

Built 1990 Load: 27.2 t ADT: 4,575

SH 470 ML WBND

Good

Over: SH 177-UNIVERSITY BLVD

5.2 MI W OF JCT I 25, Douglas, CO

Built 1984 Load: 27.2 t ADT: 48,500

US 50 ML EBND

Good

Over: BRUSH HOLLOW CREEK

3.4 MI E OF JCT SH 67, Fremont, CO

Built 1976 Load: 27.2 t ADT: 7,000

I 25 ML SBND

Good

Over: APACHE CREEK

15.5 MI N OF WALSENBURG, Huerfano, CO

Built 1965 Load: 27.2 t ADT: 7,000

Showing 5,701-5,750 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.