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

CORONA ST

Fair

Over: CHERRY CREEK

CORONA ST AT SPEER BLVD, Denver, CO

Built 1957 Load: 32.7 t ADT: 6,594

EBnd 1ST AVE

Fair

Over: CHERRY CREEK

1ST AVE AT DOWNING ST, Denver, CO

Built 1957 Load: 32.7 t ADT: 26,591

SH 64 ML

Fair

Over: FLETCHERS GULCH

12 MI E OF RANGLEY, Rio Blanco, CO

Built 1949 Load: 32.7 t ADT: 670

QUEBEC STREET

Fair

Over: AIRLAWN ROAD

0.2 MI SOUTH OF I70, Denver, CO

Built 1961 Load: 32.7 t ADT: 62,614

SH 64 ML

Fair

Over: BLACKS GULCH

15.5 MI W OF MEEKER, Rio Blanco, CO

Built 2006 Load: 32.7 t ADT: 650

YALE AVE

Fair

Over: HIGHLINE CANAL

YALE AT HOLLY ST, Denver, CO

Built 1955 Load: 32.7 t ADT: 38,344

MAXWELL PLACE

Fair

Over: IRONDALE GULCH

0.2 MI EAST OF CHAMBERS, Denver, CO

Built 2001 Load: 32.7 t ADT: 1,198

ROSEMARY WAY

Fair

Over: GOLDSMITH GULCH

JUST W OF TAMARAC DRIVE, Denver, CO

Built 1985 Load: 32.7 t ADT: 2,030

PRINCETON AVE

Fair

Over: GOLDSMITH GULCH

W OF TAMARAC DRIVE, Denver, CO

Built 1985 Load: 32.7 t ADT: 2,176

ZUNI STREET

Fair

Over: SANDERSON GULCH

JUST S OF FLORIDA AVENUE, Denver, CO

Built 1979 Load: 32.7 t ADT: 4,930

SH 93 ML

Fair

Over: SKUNK CREEK / PED PATH

0.1 MI N of 27th WAY, Boulder, CO

Built 2014 Load: 32.7 t ADT: 20,000

COUNTY ROAD 64

Fair

Over: NORTH TURKEY CREEK

1.3 MI W OF US285, Jefferson, CO

Built 1973 Load: 32.7 t ADT: 1,514

SH 119

Fair

Over: WONDERLAND CRK AND PATH

.5 MI W OF FOOTHILLS PKWY, Boulder, CO

Built 2006 Load: 32.7 t ADT: 26,000

WEST 8TH AVENUE

Fair

Over: WEIR GULCH

EAST OF FEDERAL BLVD, Denver, CO

Built 1970 Load: 32.7 t ADT: 13,064

I 76 ML

Fair

Over: JIM CREEK

3.49 MI NW OF JCT SH 52, Weld, CO

Built 1961 Load: 32.7 t ADT: 16,000

CHAMBERS ROAD

Fair

Over: MONTBELLO DITCH

AT 46TH AVENUE, Denver, CO

Built 1980 Load: 32.7 t ADT: 31,946

OLD WADSWORTH BLVD

Fair

Over: SOUTHWESTERLY GULCHES

BTWN WDSWRTH-MARSTON, Denver, CO

Built 1968 Load: 32.7 t ADT: 2,450

BALSAM ST

Fair

Over: SOUTHWESTERLY GULCHES

1/2 MI S OF QUINCY AVE, Denver, CO

Built 1985 Load: 32.7 t ADT: 8,092

CRESTLINE AVE

Fair

Over: SOUTHWESTERLY GULCHES

1/4 MI W OF WADSWORTH, Denver, CO

Built 1985 Load: 32.7 t ADT: 1,575

DEDISSE PARK RD

Fair

Over: BEAR CREEK TRIB

0.6 MI W OF SH 74, Denver, CO

Built 1970 Load: 32.7 t

LAWRENCE STREET

Fair

Over: TABOR CNTR-PRKING GARAGE

BETWEEN 16TH AND 17TH STR, Denver, CO

Built 1984 Load: 32.7 t ADT: 7,302

SW 2ND LEVEL NEW

Fair

Over: PARKING LOT

WEST OF NEW PARKING STR, Denver, CO

Built 2007 Load: 32.7 t ADT: 1,139

SW 4/5TH LVL PARK

Fair

Over: 84TH AVENUE

BTWN SW GARAGES, Denver, CO

Built 2007 Load: 32.7 t ADT: 348

COUNTY ROAD 126

Fair

Over: BUFFALO CREEK

AT TOWN OF BUFFALO CREEK, Jefferson, CO

Built 1950 Load: 32.7 t ADT: 1,329

KIT CARSON DR

Fair

Over: DRAINAGE DITCH

COMANCHE VILLAGE, El Paso, CO

Built 2000 Load: 32.7 t ADT: 500

HARR AVE

Fair

Over: C DITCH

ADJCNT TO PRUSSMAN BLVD, El Paso, CO

Built 2008 Load: 32.7 t ADT: 1,000

NELSON BLVD

Fair

Over: DRAINAGE DITCH

ADJCNT TO BRIDGE 85092, El Paso, CO

Built 2000 Load: 32.7 t ADT: 600

STUCKER MESA ROAD

Fair

Over: FIRE MOUNTAIN CANAL

.6 MI NW OF SH 133, Delta, CO

Built 1983 Load: 32.7 t ADT: 160

RAMPART RANGE ROAD

Fair

Over: WILLOW CREEK

0.6 MI N OF WATERTON, Douglas, CO

Built 1985 Load: 32.7 t ADT: 11,744

STONEGATE PKWY

Fair

Over: NEWLIN GULCH

0.5 MI S OF LINCOLN BLVD, Douglas, CO

Built 1995 Load: 32.7 t ADT: 3,008

WAUCONDA DR

Fair

Over: BEAR CREEK

SPILLWAY AT WAUCONDA LAKE, Douglas, CO

Built 1968 Load: 32.7 t ADT: 182

WB RIDGEGATE PKWY

Fair

Over: BADGER GULCH

1.7 MI E OF I25, Douglas, CO

Built 2010 Load: 32.7 t ADT: 15,986

TITAN COURT

Fair

Over: LOCAL DRAINAGE

0.1 MI S OF TITAN RD, Douglas, CO

Built 1980 Load: 32.7 t ADT: 538

TITAN PARK CIRCLE

Fair

Over: LOCAL DRAINAGE

0.1 MI S OF TITAN PKWY, Douglas, CO

Built 1980 Load: 32.7 t ADT: 1,105

SH 139 ML

Fair

Over: STATE BRIDGE DRAW

12 MI S OF RANGELY, Rio Blanco, CO

Built 1978 Load: 32.7 t ADT: 620

COUNTY ROAD 64

Fair

Over: NORTH TURKEY CREEK

1.15 MI W OF US285, Jefferson, CO

Built 1973 Load: 32.7 t ADT: 2,432

COUNTY ROAD 64

Fair

Over: NORTH TURKEY CREEK

1.1 MI W OF US285, Jefferson, CO

Built 1973 Load: 32.7 t ADT: 2,432

COUNTY ROAD 64

Fair

Over: NORTH TURKEY CREEK

.1 MI N OF US285, Jefferson, CO

Built 1973 Load: 32.7 t ADT: 2,855

I 70 ML

Fair

Over: SH 95 ML

LAKESIDE, Jefferson, CO

Built 1966 Load: 32.7 t ADT: 93,000

SH 72 ML

Fair

Over: RALSTON CREEK

INDIANA ST ABOUT 6800 N, Jefferson, CO

Built 1985 Load: 32.7 t ADT: 14,000

SOUTH BOULDER RD

Fair

Over: DRAINAGE DITCH AR

IN LAFAYETTE, Boulder, CO

Built 1996 Load: 32.7 t ADT: 37,000

ROSS ROAD

Fair

Over: NORTH TURKEY CREEK

TINYTOWN, Jefferson, CO

Built 1973 Load: 32.7 t ADT: 116

BRIDGE STREET

Fair

Over: FULTON CANAL

E. END OF BRIGHTON, Adams, CO

Built 1964 Load: 32.7 t ADT: 21,209

GILBERT STREET

Fair

Over: VAN BIBBER CREEK

JUST NORTH OF 58TH AVE., Jefferson, CO

Built 2013 Load: 32.7 t ADT: 1,254

19TH AVE

Fair

Over: First Creek

20.6 MI from I-25, Arapahoe, CO

Built 1997 Load: 32.7 t ADT: 3,000

E-470

Fair

Over: LOCAL DRAINAGE

37.30 MI FROM I-25, Adams, CO

Built 2002 Load: 32.7 t ADT: 40,466

E-470 WB

Fair

Over: Jordan Road

4.33 MI FROM I 25, Douglas, CO

Built 1989 Load: 32.7 t ADT: 26,306

E-470 Ramp G

Fair

Over: First Creek

20.67 MI from I-25, Adams, CO

Built 1997 Load: 32.7 t ADT: 2,200

COUNTY ROAD 105

Fair

Over: EAST BIJOU CREEK

1.1 MI. S. OF COLO 86, Elbert, CO

Built 1965 Load: 32.7 t ADT: 171

COUNTY ROAD 125

Fair

Over: EAST BIJOU CREEK

1.4 MI. N. OF COLO 86, Elbert, CO

Built 1964 Load: 32.7 t ADT: 48

Showing 2,801-2,850 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.