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 72

Fair

Over: Park Creek

3.4 Mi E of SH287, Larimer, CO

Built 2014 Load: 96.9 t ADT: 4,435

US 160 ML

Fair

Over: S FK RIO GRANDE RIVER

7.5 MI E OF WOLF CRK PASS, Mineral, CO

Built 1977 Load: 96.9 t ADT: 2,900

SH 12 ML

Fair

Over: BURRO RIVER

4.7 MI E OF SEGUNDO, Las Animas, CO

Built 1936 Load: 96.9 t ADT: 1,500

NFSR 871

Fair

Over: DEXTER CREEJ2009

1.65 MI NE of SH550, Ouray, CO

Built 2010 Load: 97.2 t ADT: 25

I 70 ML

Fair

Over: DRAW

7.4 MI E OF JCT US 36, Arapahoe, CO

Built 1960 Load: 97.6 t ADT: 26,000

COUNTY ROAD 2

Fair

Over: STEELS FORK CREEK

1 MILE NORTH OF ROAD X, Lincoln, CO

Built 1975 Load: 98.1 t ADT: 110

FRASER STREET

Fair

Over: DOVE CREEK

.1 MI S OF FREMONT, Arapahoe, CO

Built 1985 Load: 98.6 t ADT: 780

County Road X

Fair

Over: Jackson Lake Inlet Canal

Junction with Co Rd 1, Morgan, CO

Built 1965 Load: 98.6 t ADT: 408

QUINCY AVE

Fair

Over: SOUTHWESTERLY GULCHES

.35 MI W SHERIDAN BLVD, Denver, CO

Built 1986 Load: 98.7 t ADT: 11,115

MTN VILLAGE BLV

Fair

Over: PEDESTRIAN/SKIER

CITY STREET - MTN VILLAGE, San Miguel, CO

Built 1990 Load: 99.2 t ADT: 5,331

County Road 12E

Fair

Over: Michigan River Overflow

1.3 Mi E of St Hwy 125, Jackson, CO

Built 2013 Load: 99.9 t ADT: 147

COUNTY ROAD 20

Fair

Over: DAWSON DRAW

.5 MI N OF CR U, Montezuma, CO

Built 1956 Load: 99.9 t ADT: 78

County Road 53

Fair

Over: Dry Creek

3.6 Mi S of US Hwy 40, Routt, CO

Built 1975 Load: 99.9 t ADT: 165

Oak Street

Fair

Over: Soda Creek

100 ft E of 11th Street, Routt, CO

Built 1970 Load: 99.9 t ADT: 3,918

11th Street

Fair

Over: Soda Creek

100 ft S of Oak Street, Routt, CO

Built 1950 Load: 99.9 t ADT: 3,112

OLD SANTA FE TRAIL

Fair

Over: NORTH GATE BLVD

1100 ft W of I-25, El Paso, CO

Built 1957 Load: 99.9 t ADT: 1

SOUTH GATE BLVD

Fair

Over: KETTLE CREEK

1 MI. W. OF I-25 EXIT 150, El Paso, CO

Built 1958 Load: 99.9 t ADT: 18,500

58TH AVE AND IND

Fair

Over: VAN BIBBER CREEK

.10 MI W OF INDEPENDENCE, Jefferson, CO

Built 2006 Load: 99.9 t ADT: 21,216

64TH PARKWAY

Fair

Over: S BLDR DIVERSION CANAL

0.3 MI EAST OF SH 93, Jefferson, CO

Built 2000 Load: 99.9 t ADT: 6,792

64TH AVENUE

Fair

Over: LOCAL DRAINAGE

1.1 MI EAST OF SH 93, Jefferson, CO

Built 2000 Load: 99.9 t ADT: 183

HARLAN STREET

Fair

Over: LITTLE DRY CREEK

0.2 MI SOUTH OF 80TH AVE, Jefferson, CO

Built 1970 Load: 99.9 t ADT: 2,165

22ND AVENUE

Fair

Over: LOCAL DRAINAGE

0.1 MI WEST OF TOWER RD, Adams, CO

Built 1981 Load: 99.9 t ADT: 1,442

1ST AVE

Fair

Over: HIGHLINE CANAL

0.3 MI E OF CHAMBERS RD, Arapahoe, CO

Built 1983 Load: 99.9 t ADT: 2,949

CHAMBERS ROAD

Fair

Over: HIGHLINE CANAL

0.3 MI N OF ALAMEDA AVE, Arapahoe, CO

Built 1983 Load: 99.9 t ADT: 23,104

LOUISIANA AVENUE

Fair

Over: SIDE CREEK

0.3 MI E OF TOWER RD, Arapahoe, CO

Built 1981 Load: 99.9 t ADT: 1,360

OLD TOM MORRIS RD

Fair

Over: MURPHY CREEK

0.2 MI N OF JEWELL AVE, Arapahoe, CO

Built 2002 Load: 99.9 t ADT: 3,593

HARVEST ROAD

Fair

Over: MURPHY CREEK

0.25 MI S OF QUINCY, Arapahoe, CO

Built 2005 Load: 99.9 t ADT: 6,151

BELLEVIEW AVENUE

Fair

Over: EAST TOLLGATE CREEK

0.25 MI E OF GUN CLUB RD, Arapahoe, CO

Built 2004 Load: 99.9 t ADT: 2,015

BELLEVIEW AVENUE

Fair

Over: MURPHY CREEK

1 MI EAST OF GUN CLUB RD, Arapahoe, CO

Built 2004 Load: 99.9 t ADT: 2,157

AURORA PARKWAY

Fair

Over: EAST TOLLGATE CREEK

2 MI SOUTH OF QUINCY, Arapahoe, CO

Built 2005 Load: 99.9 t ADT: 25,054

GARTRELL ROAD

Fair

Over: PINEY CREEK

0.1 MI S OF ARAPAHOE RD, Arapahoe, CO

Built 1999 Load: 99.9 t ADT: 12,996

AURORA PARKWAY

Fair

Over: PINEY CREEK

0.8 MI S OF ARAPAHOE RD, Arapahoe, CO

Built 2006 Load: 99.9 t ADT: 10,894

I25 ML+FRONTAGE RD

Fair

Over: WINDSOR RES CANAL

0.4 MI N OF JCT SH1, Larimer, CO

Built 1989 Load: 99.9 t ADT: 25,000

Interlocken Loop

Fair

Over: Pedestrian Underpass

125 Ft. N of Eldorado, Broomfield, CO

Built 1999 Load: 99.9 t ADT: 12,139

Interlocken Loop

Fair

Over: Pedestrian Underpass

0.1 Mi N of W. Flatiron C, Broomfield, CO

Built 2000 Load: 99.9 t ADT: 12,804

Northwest Parkway

Fair

Over: Rock Creek

0.2 Mi N OF US Hwy 36, Broomfield, CO

Built 1999 Load: 99.9 t ADT: 27,763

US 34 ML

Fair

Over: BUCKINGHAM DITCH

2 MI WEST OF LOVELAND, Larimer, CO

Built 1997 Load: 99.9 t ADT: 8,300

US 34 ML

Fair

Over: DRAW

AT W. END OF LOVELAND, Larimer, CO

Built 1998 Load: 99.9 t ADT: 8,300

SH 61 ML

Fair

Over: DRAW

15.4 MI NO OF JCT US 34, Washington, CO

Built 1965 Load: 99.9 t ADT: 440

CALEY AVENUE

Fair

Over: COTTONWOOD CREEK

.1 MI W OF LIMA STREET, Arapahoe, CO

Built 1986 Load: 99.9 t ADT: 236

FOREST WAY

Fair

Over: Willow Creek

JUST WEST OF HOLLY STREET, Arapahoe, CO

Built 1983 Load: 99.9 t ADT: 1,207

MINERAL AVENUE

Fair

Over: WILLOW CREEK

.5 MILE E OF QUEBEC, Arapahoe, CO

Built 1982 Load: 99.9 t ADT: 24,068

COUNTY ROAD 162

Fair

Over: CHALK CREEK

200 FT W OF CHALK LAKE CG, Chaffee, CO

Built 1970 Load: 99.9 t ADT: 460

FAIRWAY LANE

Fair

Over: DUTCH CREEK

.6 MI E OF PLATTE CANYON, Arapahoe, CO

Built 1997 Load: 99.9 t ADT: 2,996

120TH AVENUE

Fair

Over: THIRD CREEK

.5 MI WEST OF TOWER ROAD, Adams, CO

Built 2001 Load: 99.9 t ADT: 15,963

REVERE STREET

Fair

Over: LOCAL DRAINAGE

.10 MI NORTH OF 104TH, Adams, CO

Built 2005 Load: 99.9 t ADT: 2,323

First Street

Fair

Over: Cedar Mountain Gulch

50 Ft West of St Hwy 13, Moffat, CO

Built 1980 Load: 99.9 t ADT: 1,267

FONTANERO ST

Fair

Over: CAMP CREEK

AT 31ST STREET, El Paso, CO

Built 1955 Load: 99.9 t ADT: 9,278

8TH STREET

Fair

Over: BEAR CREEK

1.3 MI S OF HIGHWAY 24, El Paso, CO

Built 1970 Load: 99.9 t ADT: 8,300

KIOWA STREET

Fair

Over: SHOOKS RUN

JUST W OF EL PASO STREET, El Paso, CO

Built 2002 Load: 99.9 t ADT: 1,423

Showing 5,151-5,200 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.