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

Co Rd 311

Good

Over: East Divide Creek

7 Miles S of Silt, Garfield, CO

Built 2014 Load: 28.8 t ADT: 194

SH 59 ML

Good

Over: LITTLE SPRING CREEK

16 MI N OF KIT CARSON, Cheyenne, CO

Built 1960 Load: 28.8 t ADT: 380

US 50 ML

Good

Over: COTTONWOOD CREEK

20.2 MI SE OF SALIDA, Fremont, CO

Built 1999 Load: 28.8 t ADT: 3,600

CURTICE STREET

Good

Over: LITTLES CREEK

2 BLKS S OF MAIN STREET, Arapahoe, CO

Built 1981 Load: 28.8 t ADT: 993

County Road 30

Good

Over: Dry Sand Creek

0.8 Mi. E. of Co. Rd. 33, Sedgwick, CO

Built 1993 Load: 28.8 t ADT: 29

County Road 102

Good

Over: Robinson Creek

0.25 Mi E of Co Rd 41, Weld, CO

Built 1992 Load: 28.8 t ADT: 24

I 25 ML NBND

Good

Over: LITTLE THOMPSON RIVER

6.7 MI N OF JCT SH 66, Weld, CO

Built 2021 Load: 28.9 t ADT: 41,000

County Rd. 46E

Good

Over: Dry Creek Outfall Channe

Lincoln Av and Timberline, Larimer, CO

Built 1998 Load: 28.9 t ADT: 6,989

County Road 30

Good

Over: Lower Platte Beaver Cnl

0.5 Mi N of Co Rd U, Morgan, CO

Built 1987 Load: 28.9 t ADT: 37

I 25 ML NBND

Good

Over: WALSEN ARROYO

13.2 MILES N OF AGUILAR, Huerfano, CO

Built 1969 Load: 28.9 t ADT: 5,500

County Road 1

Good

Over: Settlers Ditch

0.4 Mi. N. of US Hwy 138, Sedgwick, CO

Built 1995 Load: 28.9 t ADT: 4

County Road 32

Good

Over: Peterson Ditch

0.2 Mi East of Co. Rd. 23, Sedgwick, CO

Built 1995 Load: 28.9 t ADT: 30

JEWELL AVENUE

Good

Over: GOLDSMITH GULCH

JEWELL AT MONACO PKWY, Denver, CO

Built 1972 Load: 29.0 t ADT: 2,421

I 76 ML WBND

Good

Over: KIOWA CREEK

1.8 MI SW OF JCT SH 39, Morgan, CO

Built 1993 Load: 29.0 t ADT: 6,500

I 76 ML EBND

Good

Over: KIOWA CREEK

0.3 MI NE OF JCT US 6, Morgan, CO

Built 1993 Load: 29.0 t ADT: 6,500

POLAR STAR ROAD

Good

Over: WEST LAKE CREEK

AT W LAKE CREEK ROAD, Eagle, CO

Built 1994 Load: 29.0 t ADT: 249

I 70 (EDWARDS SPUR

Good

Over: UP RR

AT EDWARDS, Eagle, CO

Built 1970 Load: 29.0 t ADT: 15,000

I 70 ML EBND

Good

Over: PARACHUTE CREEK

1/2 MI W OF PARACHUTE INT, Garfield, CO

Built 1982 Load: 29.0 t ADT: 9,000

I 70 ML WBND

Good

Over: GRAND VALLEY CANAL

2.2 MI W OF HORIZON DRIVE, Mesa, CO

Built 1965 Load: 29.0 t ADT: 11,500

I 70 ML WBND

Good

Over: HORIZON DRIVE

E. EXIT OF GRAND JCT., Mesa, CO

Built 1965 Load: 29.0 t ADT: 11,500

SH 330 ML

Good

Over: PLATEAU CREEK

1.8 MI N OF JCT SH 65, Mesa, CO

Built 1975 Load: 29.0 t ADT: 1,300

SH 65 ML

Good

Over: PLATEAU CREEK

10 MI S OF JCT I 70, Mesa, CO

Built 1973 Load: 29.0 t ADT: 2,600

US 24 ML

Good

Over: DRAW

5.1 MI NE OF FALCON, El Paso, CO

Built 1995 Load: 29.0 t ADT: 11,000

SH 348 ML

Good

Over: UNCOMPAHGRE RIVER

IN DELTA, Delta, CO

Built 1972 Load: 29.0 t ADT: 1,300

SH 145 ML

Good

Over: LEOPARD CREEK

JCT SH 62 - PLACERVILLE, San Miguel, CO

Built 2013 Load: 29.0 t ADT: 4,700

County Road 19

Good

Over: Boxelder Creek

1.2 Mi N of Co Rd 80, Larimer, CO

Built 1992 Load: 29.0 t ADT: 81

County Road 67

Good

Over: S F Williams Fork River

0.7 Mi S of Co Rd 29, Routt, CO

Built 1992 Load: 29.1 t ADT: 31

COUNTY ROAD 34

Good

Over: RATTLESNAKE CREEK

JUST EAST OF CR 185, Arapahoe, CO

Built 1991 Load: 29.1 t ADT: 126

QUENTIN ST

Good

Over: LOCAL DRAINAGE

JUST N OF BARANMOOR PKWY, Adams, CO

Built 2016 Load: 29.1 t ADT: 332

COUNTY ROAD 306

Good

Over: CLEAR CREEK

1 MI NE GEORGETOWN LAKE, Clear Creek, CO

Built 2008 Load: 29.1 t ADT: 391

I 76 ML EBND

Good

Over: TENNYSON STREET

0.54 MI E OF JCT SH 95, Adams, CO

Built 1986 Load: 29.1 t ADT: 39,500

RAMP/PENA BLVD NBD

Good

Over: 40TH AVE ML R

PENA BLVD OVER 40TH AVE, Adams, CO

Built 1993 Load: 29.1 t ADT: 33,000

SH 141 ML

Good

Over: DRAW

6.5 MI S. OF GATEWAY, Mesa, CO

Built 1960 Load: 29.1 t ADT: 260

SH 71 ML

Good

Over: DITCH

10 MI S OF PUNKIN CENTER, Lincoln, CO

Built 1962 Load: 29.1 t ADT: 650

SH 96 ML

Good

Over: BOONE CREEK

3 MI E OF JCT SH 229, Pueblo, CO

Built 1993 Load: 29.1 t ADT: 1,600

County Road 13

Good

Over: St. Vrain Creek

0.5 Mi N of Co Rd 26, Weld, CO

Built 2004 Load: 29.1 t ADT: 29

County Road Z

Good

Over: Dove Creek Canal Reach 1

Yellow Jacket Colorado, Montezuma, CO

Built 1985 Load: 29.2 t ADT: 30

US 40 ML

Good

Over: YAMPA RIVER

3 MI EAST OF MAYBELL, Moffat, CO

Built 1998 Load: 29.2 t ADT: 760

SH 14 ML

Good

Over: CACHE LA POUDRE RIVER

22.6 MI E OF CHAMBERS LAK, Larimer, CO

Built 1990 Load: 29.2 t ADT: 1,100

BRIGHTON ROAD

Good

Over: FULTON DITCH

250 FT S of 112TH AVE, Adams, CO

Built 2022 Load: 29.2 t ADT: 1,518

CASCADE AVE

Good

Over: CHEYENNE CREEK

JUST N 0F CHEYENNE ROAD, El Paso, CO

Built 1987 Load: 29.2 t ADT: 6,059

WOODMEN RD

Good

Over: ACADEMY BLVD.

AT ACADEMY, El Paso, CO

Built 2011 Load: 29.2 t ADT: 43,035

US 40 ML

Good

Over: TROUBLESOME CREEK

4.62 MI E OF JCT SH9, Grand, CO

Built 1996 Load: 29.2 t ADT: 2,400

US 40 ML

Good

Over: BIG MUDDY CREEK

IN KREMMLING, Grand, CO

Built 1996 Load: 29.2 t ADT: 3,100

I-76 ML

Good

Over: SH 224 ML (74TH AVE)

AT 74TH AVE, Adams, CO

Built 2010 Load: 29.2 t ADT: 84,000

E-470 WB

Good

Over: Peoria Street

1.71 MI FROM I 25, Douglas, CO

Built 1990 Load: 29.2 t ADT: 26,951

OLD GOLDEN ROAD

Good

Over: LENA GULCH

East of Noble Road, Jefferson, CO

Built 2014 Load: 29.2 t ADT: 17,591

COUNTY ROAD 157

Good

Over: ARKANSAS RIVER

JUST NORTH OF US 50, Fremont, CO

Built 2021 Load: 29.2 t ADT: 104

McClure Ave

Good

Over: Unnamed Stream

110 ft E of Colorado BLVD, Weld, CO

Built 2018 Load: 29.2 t ADT: 2,731

G Road

Good

Over: N Leach Creek

E. of 24 Rd, Mesa, CO

Built 2022 Load: 29.2 t ADT: 6,685

Showing 5,851-5,900 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.