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

Fish Crk Falls Rd

Fair

Over: Spring Creek

200 Ft SE of 3rd Street, Routt, CO

Built 1973 Load: 32.7 t ADT: 5,949

Winter Park Drive

Fair

Over: Fraser River

Entrance to Trademark, Grand, CO

Built 1989 Load: 32.7 t ADT: 843

KALEY CABIN ROAD

Fair

Over: BIG THOMPSON RIVER

0.1 MILES WEST OF BEAR LA, Larimer, CO

Built 1982 Load: 32.7 t ADT: 50

U.S. ROUTE 34

Fair

Over: FALL RIVER

2.0 MILES WEST OF FALL RI, Larimer, CO

Built 1983 Load: 32.7 t ADT: 3,310

WILD BASIN ROAD

Fair

Over: NORTH ST. VRAIN CREEK

HWY 7 TO WILD BASIN TRAIL, Boulder, CO

Built 1982 Load: 32.7 t ADT: 75

WILD BASIN ROAD

Fair

Over: NORTH ST. VRAIN CREEK

2.1 MILES FROM PARK BOUND, Boulder, CO

Built 1982 Load: 32.7 t ADT: 75

GLACIER BASIN ROAD

Fair

Over: GLACIER CREEK

ENTRANCE TO GLACIER BASIN, Larimer, CO

Built 1982 Load: 32.7 t ADT: 80

MAIN STREET

Fair

Over: DRAINAGE

W. OF KIPLING STREET, Jefferson, CO

Built 2011 Load: 32.7 t ADT: 1,100

7TH. STREET

Fair

Over: DRAINAGE

N. OF ALAMEDA AVE., Jefferson, CO

Built 1970 Load: 32.7 t ADT: 1,100

5TH STREET

Fair

Over: DRAINAGE

S. OF CENTER AVENUE, Jefferson, CO

Built 1970 Load: 32.7 t ADT: 10

FARMERS ROAD AR

Fair

Over: DRAINAGE DITCH AR

FARMERS RD-46' Rt OF, Logan, CO

Built 1970 Load: 32.7 t ADT: 12

E. 120TH AVE

Fair

Over: LOCAL DRAINAGE

0.7 MI W OF HAYSMOUNT RD, Adams, CO

Built 2007 Load: 32.7 t ADT: 2,091

DOWNING DRIVE

Fair

Over: NIVER CREEK

DOWNING AT CORONADO PKWY, Adams, CO

Built 1965 Load: 32.7 t ADT: 2,510

ASPEN STREET

Fair

Over: EAST TOLLGATE CREEK

0.2 miles North of Southg, Arapahoe, CO

Built 1999 Load: 32.7 t ADT: 3,400

PATROL RD

Fair

Over: STORM DRAINAGE SWALE

1.5 miles northeast of th, El Paso, CO

Built 1987 Load: 32.7 t ADT: 50

PATROL RD

Fair

Over: STORM DRAINAGE SWALE

1.2 miles east of southwe, El Paso, CO

Built 1987 Load: 32.7 t ADT: 50

PATROL RD

Fair

Over: DRY DRAINAGE SWALE

2 000 feet north of south, El Paso, CO

Built 1987 Load: 32.7 t ADT: 50

ENOCH ROAD

Fair

Over: DRY DRAINAGE SWALE

1.5 mile south of County, El Paso, CO

Built 1986 Load: 32.7 t ADT: 4,000

E STEWART AVENUE

Fair

Over: UNNAMED ARROYO

0.55 MILES EAST OF LANGLE, El Paso, CO

Built 1992 Load: 32.7 t ADT: 7,051

W STEWART AVENUE

Fair

Over: EAST SAND CREEK

0.4 MILES WEST OF PAINE S, El Paso, CO

Built 2007 Load: 32.7 t ADT: 6,823

SOUTH GATE BLVD

Fair

Over: MONUMENT CREEK AND UPRR

0.1 MI. S. OF STADIUM BLV, El Paso, CO

Built 1958 Load: 32.7 t ADT: 18,815

EAST DOUGLASS VALL

Fair

Over: DOUGLASS VALLEY TRIBUTAR

800 N OF COMMUNITY CENTE, El Paso, CO

Built 1958 Load: 32.7 t ADT: 261

ACADEMY DRIVE

Fair

Over: LEHMAN RUN

1300 W OF STADIUM BLVD, El Paso, CO

Built 1958 Load: 32.7 t ADT: 3,000

COUNTY ROAD 129

Fair

Over: BRANCH OF KIOWA CREEK

1 MI NORTH OF CO RD 30, Arapahoe, CO

Built 1964 Load: 32.7 t ADT: 609

COUNTY ROAD 18

Fair

Over: RATTLESNAKE CREEK

2.9 MILES E OF CR 181, Arapahoe, CO

Built 1968 Load: 32.7 t ADT: 130

E. ILIFF AVE.

Fair

Over: HIGHLINE CANAL TRAIL

0.5 W OF PARKER RD., Arapahoe, CO

Built 2012 Load: 32.7 t ADT: 38,491

COUNTY ROAD 30

Fair

Over: SENAC CREEK

2.5 MILES E OF SH 30, Arapahoe, CO

Built 1958 Load: 32.7 t ADT: 3,573

COUNTY ROAD 30

Fair

Over: COAL CREEK

2.2 MI W OF WATKINS RD, Arapahoe, CO

Built 1963 Load: 32.7 t ADT: 3,573

COUNTY ROAD 30

Fair

Over: COAL CREEK

1.1 MI W OF WATKINS RD, Arapahoe, CO

Built 1967 Load: 32.7 t ADT: 3,573

COUNTY ROAD 30

Fair

Over: KIOWA CREEK

1.1 MILES E OF CR 129, Arapahoe, CO

Built 1983 Load: 32.7 t ADT: 1,208

COUNTY ROAD 30

Fair

Over: BRANCH W. BIJOU CREEK

1.5 MILES W OF CR 173, Arapahoe, CO

Built 1963 Load: 32.7 t ADT: 50

HARVARD AVE

Fair

Over: HIGHLINE CANAL

0.3 MI. E. OF QUEBEC, Arapahoe, CO

Built 1986 Load: 32.7 t ADT: 3,298

COUNTY ROAD 38

Fair

Over: RATTLESNAKE CREEK

1.0 MI E OF CR 181, Arapahoe, CO

Built 1962 Load: 32.7 t ADT: 240

JOLIET ST

Fair

Over: COTTONWOOD CREEK TRIB.

.4 MI S OF E EASTER AVE, Arapahoe, CO

Built 1989 Load: 32.7 t ADT: 212

INVERNESS DR EAST

Fair

Over: COTTONWOOD CREEK

.7 MILE S OF DRY CREEK RD, Arapahoe, CO

Built 1974 Load: 32.7 t ADT: 9,752

EASTER AVE

Fair

Over: COTTONWOOD CREEK

0.1 MI W of LIMA ST, Arapahoe, CO

Built 1988 Load: 32.7 t ADT: 13,074

INVERNESS DR E.

Fair

Over: COTTONWOOD CREEK

0.2 MI W OF INVERNESS DRI, Arapahoe, CO

Built 1978 Load: 32.7 t ADT: 10,611

BLACKHAWK ST

Fair

Over: CHERRY CREEK TRIB

.2 MI S OF FREMONT AVE, Arapahoe, CO

Built 1994 Load: 32.7 t ADT: 11,510

61ST AVENUE

Fair

Over: RALSTON CREEK

0.17 MI E OF RALSTON ROAD, Jefferson, CO

Built 1957 Load: 32.7 t ADT: 184

63RD PLACE

Fair

Over: CROKE CANAL

SOUTH OF SH 73, Jefferson, CO

Built 1981 Load: 32.7 t ADT: 183

64TH AVENUE

Fair

Over: FARMERS HIGHLINE CANAL

JUST E OF McINTYRE PKWY, Jefferson, CO

Built 1998 Load: 32.7 t ADT: 24,068

68TH AVENUE

Fair

Over: RALSTON CREEK

0.1 MI W OF 67TH PLACE, Jefferson, CO

Built 1965 Load: 32.7 t ADT: 585

72ND AVENUE

Fair

Over: LEYDEN CREEK

0.2 MI W OF SIMMS ST, Jefferson, CO

Built 1970 Load: 32.7 t ADT: 14,073

74TH AVENUE

Fair

Over: FARMERS HIGHLINE CANAL

0.15 MI WEST OF CARR ST, Jefferson, CO

Built 1930 Load: 32.7 t ADT: 3,182

80TH AVENUE

Fair

Over: LITTLE DRY CREEK

1.28 MI E OF KIPLING ST, Jefferson, CO

Built 1980 Load: 32.7 t ADT: 17,957

88TH AVENUE

Fair

Over: FARMERS HIGHLINE CANAL

2.75 MI WEST OF WADSWORTH, Jefferson, CO

Built 1984 Load: 32.7 t ADT: 16,585

CANDELAS PARKWAY

Fair

Over: BIG DRY CREEK

1.27 MI W OF INDIANA ST, Jefferson, CO

Built 2009 Load: 32.7 t ADT: 4,396

KIPLING STREET

Fair

Over: LITTLE DRY CREEK

1.28 MI N OF W 80TH AVE, Jefferson, CO

Built 1978 Load: 32.7 t ADT: 9,066

KENDRICK DR

Fair

Over: FARMERS HIGHLINE CANAL

JUST NORTH OF 64TH AVE, Jefferson, CO

Built 1998 Load: 32.7 t ADT: 1,730

LAMAR STREET

Fair

Over: RALSTON CREEK

JUST NORTH OF RALSTON RD, Jefferson, CO

Built 1975 Load: 32.7 t ADT: 6,422

Showing 2,551-2,600 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.