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

NO DATA ENTERED

Good

Over: WEST BRUSH CREEK - UPPER

NO DATA ENTERED, Eagle, CO

Built 2015 Load: 17.2 t ADT: 50

NO DATA ENTERED

Good

Over: NO DATA ENTERED

NO DATA ENTERED, Eagle, CO

Built 2011 Load: 17.2 t ADT: 50

COUNTY ROAD 31

Good

Over: S Fork REPUBLICAN RIVER

1.7 MILES NORTH OF ROAD E, Kit Carson, CO

Built 1977 Load: 17.2 t ADT: 333

FDR 105-4B

Good

Over: FRYING PAN RV

CHAPMAN C.G., Pitkin, CO

Built 1964 Load: 17.3 t ADT: 50

Deer Meadow Drive

Good

Over: Dry Creek

.7 MI W of Rossum Drive, Larimer, CO

Built 2008 Load: 17.4 t ADT: 108

County Road 122

Good

Over: Owl Creek

2.0 Mi E of US Hwy 85, Weld, CO

Built 1984 Load: 17.4 t ADT: 69

NFSR 503.1

Good

Over: KING SOLOMON CREEK

1.2 MI. S OF NFSR 550.1, Routt, CO

Built 1982 Load: 17.5 t ADT: 50

NFSR 740.1

Good

Over: S. FORK MICHIGAN RIVER

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

Built 1983 Load: 17.5 t ADT: 17

NO DATA ENTERED

Good

Over: ROAD

NO DATA ENTERED, La Plata, CO

Built 2013 Load: 17.5 t ADT: 50

SH 55 ML

Good

Over: SOUTH PLATTE RIVER

1 MI S OF JCT SH55+US138, Logan, CO

Built 1987 Load: 17.5 t ADT: 460

72ND AVENUE

Good

Over: BURLINGTON DITCH

0.1 MI WEST OF COLO BLVD, Adams, CO

Built 1994 Load: 17.5 t ADT: 1,268

Seventh Street

Good

Over: Fortification Creek

50 Ft W of Lincoln St., Moffat, CO

Built 1985 Load: 17.5 t ADT: 2,414

JACKSON ST

Good

Over: EAST HARVARD GULCH

JACKSON ST N OF EAST YALE, Denver, CO

Built 1967 Load: 17.5 t ADT: 428

Mountain Shadow Ln

Good

Over: Big Thompson River

25 Ft S of US Hwy 34, Larimer, CO

Built 1977 Load: 17.5 t ADT: 5

Elk Island Way

Good

Over: Big Thompson River

25 Ft N of US Hwy 34, Larimer, CO

Built 1977 Load: 17.5 t ADT: 34

COUNTY ROAD 58

Good

Over: SMOKY HILL RIVER

1.1 MILES NORTH OF ROAD G, Kit Carson, CO

Built 1969 Load: 17.7 t ADT: 23

FDR 381

Good

Over: PARK CREEK

8.4 MI SW OF SOUTH FORK, Mineral, CO

Built 1972 Load: 17.8 t ADT: 21

FDR 255

Good

Over: ALAMOSA RIVER

17 MI SSW OF MONTE VISTA, Conejos, CO

Built 1980 Load: 17.8 t ADT: 39

Blossom Road

Good

Over: Uncompahgre River

2.8 MI NW of Olathe, Montrose, CO

Built 2022 Load: 17.8 t ADT: 391

County Road GG

Good

Over: Trib. of Surveyor Creek

0.55 Mi N. of Co Rd 41, Washington, CO

Built 1960 Load: 17.8 t ADT: 18

CLAUDE COURT

Good

Over: BRANTNER GULCH

0.4 MI N OF 120TH AVE, Adams, CO

Built 1986 Load: 18.0 t ADT: 3,234

BOULDER STREET

Good

Over: SHOOKS RUN

JUST E OF N CORONA STREET, El Paso, CO

Built 1995 Load: 18.1 t ADT: 7,057

SH 103 ML

Good

Over: CHICAGO CREEK

1 MI SO OF JCT I 70 ML, Clear Creek, CO

Built 1958 Load: 18.1 t ADT: 2,300

COUGAR ROAD

Good

Over: DEER CREEK

2.7 MI W OF SH75, Jefferson, CO

Built 1969 Load: 18.1 t ADT: 889

County Road P

Good

Over: Kiowa Creek

0.4 Mi E of Co Rd 3, Morgan, CO

Built 1971 Load: 18.1 t ADT: 856

US 550 ML

Good

Over: HERMOSA CREEK

10.6 MI NO OF JCT US 160, La Plata, CO

Built 1964 Load: 18.1 t ADT: 6,200

RAMP TO SB ACADEMY

Good

Over: RAMP TO B ST

0.25 MI E OF B STREET, El Paso, CO

Built 2012 Load: 18.5 t ADT: 23,057

EAGLE STREET

Good

Over: GYPSUM CREEK

0.1 MI W OF SH 6, Eagle, CO

Built 1991 Load: 18.5 t ADT: 3,010

SH 94 ML

Good

Over: DRAW

8.1 MI E OF ELLICOTT, El Paso, CO

Built 1983 Load: 18.5 t ADT: 1,800

COUNTY ROAD 23

Good

Over: SPRING CREEK TRIBUTARY

1.0 MILE SOUTH OF ROAD M, Kit Carson, CO

Built 1971 Load: 18.5 t ADT: 24

95th Avenue

Good

Over: Cache La Poudre River

0.4 Mi N of Co Rd 62, Weld, CO

Built 1988 Load: 18.6 t ADT: 105

COUNTY ROAD 20

Good

Over: NORTH FORK HENSON CREEK

8.4 MI W OF LAKE CITY, Hinsdale, CO

Built 1986 Load: 18.6 t ADT: 166

COUNTY ROAD 60

Good

Over: MIDDLE BEAVER CREEK

1.5 MILES NORTH OF ROAD V, Kit Carson, CO

Built 1968 Load: 18.7 t ADT: 14

Woody Creek Lane

Good

Over: Larimer County Canal

100 FT W of CO-1, Larimer, CO

Built 2016 Load: 18.7 t ADT: 85

NFSR 615.1

Good

Over: NEWCOMB CREEK

3.8 MI N OF JCT 60/615, Jackson, CO

Built 2001 Load: 18.8 t ADT: 50

County Road 24

Good

Over: Upper Platte Beaver Cnl

0.5 Mi N of SH34, Morgan, CO

Built 2022 Load: 18.8 t ADT: 1,229

COUNTY ROAD 32

Good

Over: LANDSMAN CREEK TRIB.

0.25 MI S OF ROAD R, Kit Carson, CO

Built 1985 Load: 19.0 t ADT: 61

SH 128 ML/120TH AV

Good

Over: I 25 ML

1.8 MI E OF JCT US 287, Adams, CO

Built 2006 Load: 19.1 t ADT: 51,000

HILLCREST DRIVE

Good

Over: MONTROSE ARROYO

0.1 MI S OF E NIAGARA RD., Montrose, CO

Built 2006 Load: 19.1 t ADT: 5,233

WOLF CREEK ROAD

Good

Over: WOLF CREEK

0.3 MI N OF 26TH AVE, Adams, CO

Built 1991 Load: 19.2 t ADT: 44

I 25 ML

Good

Over: SH 96 ML

IN PUEBLO, Pueblo, CO

Built 1959 Load: 19.2 t ADT: 52,000

County Road 62

Good

Over: Crow Creek

0.8 Mi E of Co Rd 57, Weld, CO

Built 1965 Load: 19.2 t ADT: 39

RAMP TO SH 470 WBD

Good

Over: BEAR CREEK R

SE CRNR OF MORRISON RD. I, Jefferson, CO

Built 1989 Load: 19.3 t ADT: 39,500

County Road 39

Good

Over: Oak Creek

0.2 Mi S of Co Rd 35, Routt, CO

Built 1984 Load: 19.4 t ADT: 39

County Road 27

Good

Over: Buckhorn Creek

6.1 Mi NW of CR38E, Larimer, CO

Built 2015 Load: 19.4 t ADT: 624

IRR# CO RD 500

Good

Over: SANDOVAL CANYON

4.6 MI E OF ARBOLES, Archuleta, CO

Built 1970 Load: 19.5 t ADT: 182

COUNTY ROAD 64.6

Good

Over: PLATEAU CREEK

1.2 MI SE Road N.5, Mesa, CO

Built 2014 Load: 19.5 t ADT: 23

RACE ST

Good

Over: EAST HARVARD GULCH

RACE ST AT E HARVARD AVE, Denver, CO

Built 1967 Load: 19.6 t ADT: 366

RAMP TO US24ML WB

Good

Over: SPRING CREEK R

OVER SPRING CREEK, El Paso, CO

Built 1995 Load: 19.7 t ADT: 4,100

SH 149 ML

Good

Over: RIO GRANDE

7.0 MI SE OF CREEDE, Mineral, CO

Built 1958 Load: 19.7 t ADT: 1,400

Showing 5,401-5,450 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.