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: ELKHORN DR

VAIL VALLEY DRIVE, Eagle, CO

Built 1969 Load: 31.0 t ADT: 12,500

COUNTY ROAD 3T

Good

Over: ARIKAREE RIVER

0.6 MILE WEST OF ROAD 27, Lincoln, CO

Built 2011 Load: 31.0 t ADT: 65

County Road 34

Good

Over: Sterling Ditch No 1

0.4 Mi E of Co Rd 41, Logan, CO

Built 1994 Load: 31.0 t ADT: 313

COUNTY ROAD 45

Good

Over: COLORADO RIVER

.3 MI N OF I-70 (DEBEQUE), Mesa, CO

Built 1962 Load: 31.0 t ADT: 1,633

DALIA ROAD

Good

Over: DRY CREEK

.5 MI W OF CR 5700, Montrose, CO

Built 1992 Load: 31.1 t ADT: 241

COUNTY ROAD C

Good

Over: RIO SAN ANTONIO

.3 MI E OF CR 12.5, Conejos, CO

Built 1988 Load: 31.1 t ADT: 126

Moss Creek Drive

Good

Over: Moss Creek

150 Ft N of Butte Pass, Larimer, CO

Built 1985 Load: 31.1 t ADT: 895

SH 96 ML

Good

Over: DRAW

3.3 MI E OF CROWLEY-KIOWA, Kiowa, CO

Built 2011 Load: 31.1 t ADT: 420

CR21C/OVERLAND TRL

Good

Over: Larimer County Canal

1.0 Mi N of Co Rd 54G, Larimer, CO

Built 1990 Load: 31.1 t ADT: 945

County Road 31

Good

Over: Wildhorse Creek

0.1 MI No. of Co. Rd. 34, Phillips, CO

Built 1987 Load: 31.1 t ADT: 35

COUNTY ROAD L63

Good

Over: SAN MIGUEL RIVER

1 MI SW OF SH 145, San Miguel, CO

Built 1985 Load: 31.1 t ADT: 39

SH 13 ML

Good

Over: MUD SPRING DRAW

30 MILES NORTH OF CRAIG, Moffat, CO

Built 1998 Load: 31.2 t ADT: 860

SH 144 ML

Good

Over: COTTONWOOD DRAW

3 MI E of GOODRICH, Morgan, CO

Built 1969 Load: 31.2 t ADT: 380

2ND AVENUE

Good

Over: JUNCTION CREEK

JUST N OF 24TH STREET, La Plata, CO

Built 1989 Load: 31.2 t ADT: 1,232

I 70 ML EBND

Good

Over: COUNTY ROAD 57

9.4 MI. E. OF HWY 385, Kit Carson, CO

Built 1969 Load: 31.2 t ADT: 4,950

I 70 ML EBND

Good

Over: US 6 ML

11.1 MI E COLO-UTAH SL, Mesa, CO

Built 1973 Load: 31.2 t ADT: 4,200

SH 96 ML

Good

Over: COLT CREEK

1.7 MI E OF ARLINGTON, Kiowa, CO

Built 1968 Load: 31.2 t ADT: 420

County Road 20

Good

Over: Dry Creek

0.5 Mi E of Co Rd 29, Larimer, CO

Built 1986 Load: 31.2 t ADT: 2,113

County Road 38

Good

Over: Cache La Poudre River

0.3 Mi East of I-25, Larimer, CO

Built 2010 Load: 31.2 t ADT: 31,363

SH 318 ML

Good

Over: LITTLE SNAKE RIVER

14.8 MI NW OF JCT US 40, Moffat, CO

Built 1984 Load: 31.3 t ADT: 180

COUNTY ROAD 10

Good

Over: JOHNNY BRANCH CREEK

12.1 MI S OF CR N, Bent, CO

Built 1992 Load: 31.3 t ADT: 8

US 40 ML

Good

Over: MILLER CREEK

16 MI. E. OF DINOSAUR, Moffat, CO

Built 1971 Load: 31.3 t ADT: 630

SH 52 ML

Good

Over: SPEER CANAL

4.9 MI E OF JCT US 85, Weld, CO

Built 1971 Load: 31.3 t ADT: 11,000

US 385 ML

Good

Over: SMOKEY HILL RIVER

1.5 MI N OF JCT US 40, Cheyenne, CO

Built 1970 Load: 31.3 t ADT: 730

Hospital Loop Road

Good

Over: Cedar Mountain Gulch

.10 Mi West of CR7, Moffat, CO

Built 2008 Load: 31.3 t ADT: 939

County Road 5

Good

Over: Cache La Poudre River

0.9 Mi N of Co Rd 9, Larimer, CO

Built 1997 Load: 31.3 t ADT: 7,692

NFSR 634

Good

Over: REED GULCH

7.4 MI N OF GARDNER, Huerfano, CO

Built 1997 Load: 31.4 t ADT: 26

EB 86TH PARKWAY

Good

Over: CROKE CANAL

0.1 MI WEST OF KIPLING, Jefferson, CO

Built 1984 Load: 31.4 t ADT: 7,964

Co Rd 3 / 119th S

Good

Over: Dry Creek No 2

0.9 Mi S of SH119, Boulder, CO

Built 2013 Load: 31.4 t ADT: 2,541

I 70 ML EBND

Good

Over: GAME UNDERPASS

5 MI E OF JCT US 6, Eagle, CO

Built 1977 Load: 31.4 t ADT: 11,000

SH 470 ML EBND

Good

Over: BROADWAY

2.5 MI E OF JCT US 85, Douglas, CO

Built 1984 Load: 31.4 t ADT: 41,000

Rawhide Flats Road

Good

Over: Wire Draw Trib.

3.4 MI N of CR15 and CR84, Larimer, CO

Built 2008 Load: 31.4 t ADT: 45

US 385 ML

Good

Over: BEAVER CREEK

6.9 MI. SO OF JCT. S.H. 2, Kit Carson, CO

Built 1969 Load: 31.4 t ADT: 1,300

Ash Avenue

Good

Over: Cache La Poudre River

50 Ft. N of Int w/12th St, Weld, CO

Built 1991 Load: 31.4 t ADT: 1,048

US 24 BYPASS

Good

Over: EAST FORK SAND CREEK

1.2 MI. S. OF JCT US 24 M, El Paso, CO

Built 1994 Load: 31.4 t ADT: 60,000

County Road 17

Good

Over: North Poudre Ditch

50 Ft N of Co Rd 70, Larimer, CO

Built 2019 Load: 31.4 t ADT: 229

COUNTY ROAD 64.3

Good

Over: BUZZARD CREEK

.5 MI N of RD 330E, Mesa, CO

Built 2018 Load: 31.4 t ADT: 175

SH 12 ML

Good

Over: REILLY CANYON

COKEDALE, Las Animas, CO

Built 1974 Load: 31.4 t ADT: 1,900

ROUTT AVE.

Good

Over: BESSEMER DITCH

CORNER OF ROUTT, Pueblo, CO

Built 1965 Load: 31.4 t ADT: 921

County Road 3

Good

Over: Little Thompson River

0.5 Mi N of Co Rd 40.5, Weld, CO

Built 1987 Load: 31.4 t ADT: 116

County Road 6

Good

Over: Thompson Ditch

0.1 Mi E of CO RD 17, Weld, CO

Built 2021 Load: 31.4 t ADT: 4,326

County Road 35

Good

Over: Platte Valley Canal

0.5 Mi N of Co Rd 38, Weld, CO

Built 1966 Load: 31.4 t ADT: 280

SH 14 ML

Good

Over: CACHE LA POUDRE RIVER

4 MI W. US 287, Larimer, CO

Built 1984 Load: 31.5 t ADT: 2,100

County Road 16.5

Good

Over: Pawnee Ditch

0.1 Mi. E. of Co. Rd. 29, Logan, CO

Built 1999 Load: 31.5 t ADT: 244

US 160 ML

Good

Over: BNSF RR

IN TRINIDAD (NEW 160 BYPA, Las Animas, CO

Built 1992 Load: 31.5 t ADT: 3,700

CO RD 3

Good

Over: CRYSTAL RIVER

3.0 MI NW OF MARBLE, Gunnison, CO

Built 1986 Load: 31.6 t ADT: 791

US 50 ML

Good

Over: WELDON CREEK

3.2 MI W OF PONCHA SPGS., Chaffee, CO

Built 2003 Load: 31.6 t ADT: 2,800

County Road 93

Good

Over: S. Platte River Overflow

1.2 Mi N of I-76, Logan, CO

Built 2002 Load: 31.6 t ADT: 58

COUNTY ROAD 33

Good

Over: CHERAW LAKE DRAIN DITCH

2.1 MI S OF CR JJ.5, Otero, CO

Built 1995 Load: 31.6 t ADT: 67

YOUNGFIELD ST

Good

Over: CLEAR CREEK

.79 MI N OF W 32ND AVENUE, Jefferson, CO

Built 1988 Load: 31.6 t ADT: 14,909

Showing 6,051-6,100 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.