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 59

Fair

Over: Latham Ditch

0.6 Mi N of Co Rd 50, Weld, CO

Built 1973 Load: 32.7 t ADT: 116

County Road 61

Fair

Over: Diver. of S Platte River

1.6 Mi N of US Hwy 34, Weld, CO

Built 1970 Load: 32.7 t ADT: 744

County Road 72

Fair

Over: Lone Tree Creek

0.95 Mi E of Co Rd 41, Weld, CO

Built 1989 Load: 32.7 t ADT: 90

County Road 74

Fair

Over: Crow Creek

E. of CR 69, Weld, CO

Built 2017 Load: 32.7 t ADT: 234

County Road 88

Fair

Over: Collins Lateral Canal

0.4 Mi E of Co Rd 39, Weld, CO

Built 1970 Load: 32.7 t ADT: 72

County Road 90

Fair

Over: Spring Creek

200 Ft E of US Hwy 85, Weld, CO

Built 1960 Load: 32.7 t ADT: 1,869

County Road 90

Fair

Over: Owl Creek

0.35 Mi E of Co Rd 45, Weld, CO

Built 1970 Load: 32.7 t ADT: 16

County Road 129

Fair

Over: South Pawnee Creek

2.6 Mi N of Co Rd 88, Weld, CO

Built 1983 Load: 32.7 t ADT: 398

McClellan Road

Fair

Over: Local Drainage

Just north of CR 60, Larimer, CO

Built 2007 Load: 32.7 t ADT: 1,504

11TH ST

Fair

Over: GREELEY NO. 2 CANAL

0.3 MI N OF ST HWY 392, Weld, CO

Built 2003 Load: 32.7 t ADT: 2,422

Seventh Street

Fair

Over: Cache La Poudre River

0.2 Mi S of Eastman Pk Dr, Weld, CO

Built 1984 Load: 32.7 t ADT: 11,595

112TH AVENUE

Fair

Over: BIG BULL CREEK

112TH AVE AT HARLAN ST, Jefferson, CO

Built 1979 Load: 32.7 t ADT: 11,867

SHERIDAN BLVD

Fair

Over: BIG DRY CREEK TRIBUTARY

JUST NORTH OF 98TH AVENUE, Jefferson, CO

Built 1983 Load: 32.7 t ADT: 17,390

YARROW STREET

Fair

Over: FARMERS HIGHLINE CANAL

S. OF 91ST AVENUE, Jefferson, CO

Built 1975 Load: 32.7 t ADT: 2,735

FIELD STREET

Fair

Over: FARMERS HIGHLINE CANAL

JUST SOUTH OF 89TH COURT, Jefferson, CO

Built 1979 Load: 32.7 t ADT: 1,815

INDEPENDENCE DRIVE

Fair

Over: FARMERS HIGHLINE CANAL

S OF INDEPENDENCE CIRCLE, Jefferson, CO

Built 1975 Load: 32.7 t ADT: 4,585

HYLAND GREENS PL

Fair

Over: FARMERS HIGHLINE CANAL

JUST N OF 98TH AVENUE, Adams, CO

Built 1980 Load: 32.7 t ADT: 452

DOVER STREET

Fair

Over: TRIB TO BIG DRY CREEK

104TH AVENUE E WADSWORTH, Jefferson, CO

Built 1978 Load: 32.7 t ADT: 995

County Road P

Fair

Over: Prewitt Inlet Canal

0.4 Mi. N. of Co. Rd. 57, Washington, CO

Built 1997 Load: 32.7 t ADT: 10

32ND AVENUE

Fair

Over: LENA GULCH

0.3 MI E OF I-70, Jefferson, CO

Built 1975 Load: 32.7 t ADT: 10,393

US 85 ML SBND

Fair

Over: CACHE LA POUDRE RIVER

N. EDGE OF GREELEY, Weld, CO

Built 1962 Load: 32.8 t ADT: 11,000

SH 157 RAMP

Fair

Over: US 36 ML

IN BOULDER, Boulder, CO

Built 1971 Load: 32.8 t ADT: 44,000

US 85 ML SBND

Fair

Over: SH 7 ML

BRIGHTON, Adams, CO

Built 1965 Load: 32.8 t ADT: 15,500

US 85 ML NBND

Fair

Over: SH 7 ML

BRIGHTON, Adams, CO

Built 1965 Load: 32.8 t ADT: 15,500

COUNTY ROAD 634

Fair

Over: CALDWELL GULCH CANYON

5.5 MI NORTH OF SH 69, Huerfano, CO

Built 1994 Load: 32.8 t ADT: 8

SH 94 ML

Fair

Over: STEEL FORK

1.7 MI E OF RUSH, El Paso, CO

Built 1971 Load: 32.8 t ADT: 630

US 50 ML

Fair

Over: WOLF CREEK

16 MI EAST OF LAMAR, Prowers, CO

Built 1967 Load: 32.8 t ADT: 2,000

COUNTY ROAD 24

Fair

Over: SOUTH RUSH CREEK

1.2 MILES N OF SR 94, Lincoln, CO

Built 1990 Load: 32.8 t ADT: 19

County Road 18.5

Fair

Over: Fort Morgan Canal

0.2 Mi North of CR Q, Morgan, CO

Built 1960 Load: 32.8 t ADT: 817

COUNTY ROAD 29

Fair

Over: HOLBROOK CANAL

0.02 MI N OF CR 808, Otero, CO

Built 1990 Load: 32.8 t ADT: 5

COUNTY ROAD 3

Fair

Over: CHICO CREEK

10.3 MI NE OF HWY 50, Pueblo, CO

Built 1975 Load: 32.8 t ADT: 1,492

County Road 26

Fair

Over: Mutual Ditch

0.2 Mi W of St Hwy 14, Jackson, CO

Built 1993 Load: 32.9 t ADT: 75

US 40 ML

Fair

Over: N FK ELK RIVER

7.7 MI W OF Stmbt Sprngs, Routt, CO

Built 1976 Load: 32.9 t ADT: 5,100

SH 392 ML

Fair

Over: LONE TREE CREEK

5.5 MI E OF JCT US 85, Weld, CO

Built 1965 Load: 32.9 t ADT: 3,600

BIRCH AVENUE

Fair

Over: HAPPY CANYON CREEK

JUST WEST OF 3RD ST, Douglas, CO

Built 1989 Load: 32.9 t ADT: 316

DOUGLAS LANE

Fair

Over: EAST PLUM CREEK

0.2 MI E I-25 FRONTAGE RD, Douglas, CO

Built 1966 Load: 32.9 t ADT: 12

I 70 ML EBND

Fair

Over: FALL RIVER ROAD

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

Built 1965 Load: 32.9 t ADT: 18,000

I 70 ML

Fair

Over: TENNYSON STREET

0.5 MI. E. OF HWY 95, Denver, CO

Built 1966 Load: 32.9 t ADT: 90,000

RAMP/I 70 ML EBND

Fair

Over: LINCOLN STREET

JUST EAST OF MOUSETRAP, Denver, CO

Built 1991 Load: 32.9 t ADT: 78,500

COUNTY ROAD 5

Fair

Over: CEBOLLA CREEK

15.4 MI NE OF LAKE CITY, Hinsdale, CO

Built 1967 Load: 32.9 t ADT: 47

FRANCISCO ST.

Fair

Over: CUCHARAS RIVER

0.1 MI W OF OAK STREET, Huerfano, CO

Built 1988 Load: 32.9 t ADT: 138

WEST VIRGINIA ST

Fair

Over: CUCHARAS RIVER

.1 MI W OF OAK STREET, Huerfano, CO

Built 1988 Load: 32.9 t ADT: 56

I 25 ML NBND

Fair

Over: SH 12 RR CTY STS. DITCH

IN TRINIDAD, Las Animas, CO

Built 2009 Load: 32.9 t ADT: 8,000

County Road 17

Fair

Over: North Fork White River

0.1 Mi South of Co Rd 8, Rio Blanco, CO

Built 1990 Load: 32.9 t ADT: 141

County Road 1

Fair

Over: Big Dry Creek

0.3 Mi N of Co Rd 20.5, Boulder, CO

Built 1995 Load: 32.9 t ADT: 9,859

COUNTY ROAD J

Fair

Over: TRIB. WEST CARRIZO CREEK

NW OF CR 3.5/W OF CR 2.3, Baca, CO

Built 1970 Load: 33.0 t ADT: 29

COUNTY ROAD 52

Fair

Over: HORSE CREEK

2 MI N OF SH 160, Baca, CO

Built 1993 Load: 33.0 t ADT: 83

US 40 ML

Fair

Over: COLORADO RIVER

0.9 MI E OF JCT SH 125, Grand, CO

Built 1995 Load: 33.0 t ADT: 3,800

UNIVERSITY BLVD

Fair

Over: EAST HARVARD GULCH

UNIVERSITY AT VASSAR AVE, Denver, CO

Built 1967 Load: 33.0 t ADT: 27,146

I76 WB ML

Fair

Over: I76 EB ON RAMP FROM I270

NE OF JCT I25, Adams, CO

Built 2003 Load: 33.0 t ADT: 42,000

Showing 3,201-3,250 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.