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

SH 138 ML

Fair

Over: DRAW

2 MI NE OF JCT SH 59, Sedgwick, CO

Built 2007 Load: 50.5 t ADT: 720

COUNTY ROAD E.5

Fair

Over: RIO SAN ANTONIO

0.9 MI S OF ANTONITO, Conejos, CO

Built 1994 Load: 50.5 t ADT: 54

COUNTY LANE 10

Fair

Over: DAYTON LATERAL

1.5 MI N. OF SH 96, Crowley, CO

Built 1991 Load: 50.5 t ADT: 50

US 36 ML

Fair

Over: BADGER CREEK

13.7 MI W OF LAST CHANCE, Arapahoe, CO

Built 1986 Load: 50.5 t ADT: 790

COUNTY ROAD JJ

Fair

Over: FT. LYON CANAL

.7 MI W OF CR 5.5, Bent, CO

Built 1996 Load: 50.6 t ADT: 2

US 24 ML EBND

Fair

Over: FOUNTAIN CREEK

2.6 MI SE OF PIKES PEAK-T, El Paso, CO

Built 1965 Load: 50.6 t ADT: 11,500

YOSEMITE STREET

Fair

Over: TODD CREEK TRIBUTARY

0.4 MI SOUTH OF 152ND AVE, Adams, CO

Built 2001 Load: 50.7 t ADT: 963

HARLAN CIRCLE

Fair

Over: SANDERSON GULCH

0.05 MI NORTH OF JEWELL, Jefferson, CO

Built 2002 Load: 50.8 t ADT: 245

TAYLOR STREET

Fair

Over: EAGLE RIVER

N OF MAIN ST/SH 24, Eagle, CO

Built 1950 Load: 50.9 t ADT: 748

CR 230/BURNT MILL

Fair

Over: DRY WASH

11.8 MI E OF BEULAH, Pueblo, CO

Built 1990 Load: 50.9 t ADT: 204

COUNTY ROAD 67

Fair

Over: EIGHT MILE CREEK

6.3 MI N OF CR 123, Fremont, CO

Built 1998 Load: 51.0 t ADT: 31

OXFORD AVENUE

Fair

Over: SOUTH PLATTE RIVER

.5 MI E OF S FEDERAL BLVD, Arapahoe, CO

Built 2000 Load: 51.0 t ADT: 12,227

MAIN STREET

Fair

Over: NORTH CLEAR CREEK

AT INTERSECT WITH SH119, Gilpin, CO

Built 2004 Load: 51.1 t ADT: 1,836

I25 ML S

Fair

Over: I225 RAMP

225/25 TUNNEL, Denver, CO

Built 2004 Load: 51.1 t ADT: 221,000

US 50 ML

Fair

Over: DRAW

17.7 MI E OF FREMONT-PUEB, Pueblo, CO

Built 1977 Load: 51.1 t ADT: 9,800

COUNTY ROAD MM

Fair

Over: BUFFALO CREEK

.5 MI E OF SH 385, Prowers, CO

Built 1980 Load: 51.1 t ADT: 16

County Road 102

Fair

Over: Stinking Water Creek

0.3 Mi S of Co Rd 130, Rio Blanco, CO

Built 1998 Load: 51.1 t ADT: 239

County Road 521

Fair

Over: Beaver Creek

4.4 Mi S. of Bayfield, La Plata, CO

Built 1985 Load: 51.2 t ADT: 1,349

County Road 129

Fair

Over: Elk River

18.1 Mi N of US Hwy 40, Routt, CO

Built 1981 Load: 51.2 t ADT: 2,058

WB STETSON HILLS

Fair

Over: SAND CREEK

.5 MI E CHARLOTTE PKWY, El Paso, CO

Built 2002 Load: 51.2 t ADT: 7,629

SH 95 ML

Fair

Over: UP RR RR SPUR LT RAIL

SHERIDAN 1.3 MI N OF I 70, Adams, CO

Built 2011 Load: 51.2 t ADT: 35,000

COUNTY RD 53.5

Fair

Over: BURRO CANYON CREEK

0.7 MI N OF MADRID, Las Animas, CO

Built 1990 Load: 51.2 t ADT: 120

County Road 64

Fair

Over: Poudre Valley Canal

0.5 Mi E of Co Rd 21, Larimer, CO

Built 1968 Load: 51.2 t ADT: 49

ARCHIE STREET

Fair

Over: RITO SECO

IN TOWN OF SAN LUIS, Costilla, CO

Built 1990 Load: 51.2 t ADT: 225

County Road 4

Fair

Over: Big Dry Creek

0.6 Mi. E. of Co. Rd. 15, Weld, CO

Built 2003 Load: 51.2 t ADT: 58

COUNTY ROAD 74

Fair

Over: UPPER BEAR CREEK

1.4 MI W JCT EVRGN LAKE, Jefferson, CO

Built 1992 Load: 51.3 t ADT: 1,436

SH 119 ML

Fair

Over: UP RR

ROLLINSVILLE, Gilpin, CO

Built 1989 Load: 51.3 t ADT: 3,100

JFK Parkway

Fair

Over: Larimer Co Canal No. 2

0.1 Mi N of Bockman D, Larimer, CO

Built 1992 Load: 51.3 t ADT: 8,482

MIAMI RD.

Fair

Over: LOUTSENHIZER CANAL

.30 MI E. OF HILLCREST DR, Montrose, CO

Built 2006 Load: 51.3 t ADT: 797

County Road V

Fair

Over: Riverside Canal

0.7 Mi East of St Hwy 52, Morgan, CO

Built 1965 Load: 51.4 t ADT: 94

US 85 ML

Fair

Over: OWL CREEK

5 MI S OF WYOMING S.L., Weld, CO

Built 2011 Load: 51.5 t ADT: 3,000

ORLEANS STREET

Fair

Over: FIRST CREEK

JUST S OF 50TH AVENUE, Denver, CO

Built 2004 Load: 51.5 t ADT: 3,087

ROXBOROUGH PARK RD

Fair

Over: HIGHLINE CANAL

1.8 MI NORTH OF TITAN RD, Douglas, CO

Built 1993 Load: 51.5 t ADT: 1,046

SH 69 ML

Fair

Over: DRAW

16.8 N OF JCT SH 25, Huerfano, CO

Built 1976 Load: 51.5 t ADT: 740

IRR# SH 151 ML

Fair

Over: STOLLSTEIMER CREEK

9.9 MILES NE OF ARBOLES, Archuleta, CO

Built 1968 Load: 51.5 t ADT: 740

US 160 ML

Fair

Over: DRAW

JCT US 160 & US 160 BYPAS, Las Animas, CO

Built 1994 Load: 51.5 t ADT: 3,700

County Road 67

Fair

Over: Beaver Creek

5.9 Mi S of Co Rd 29, Routt, CO

Built 2002 Load: 51.6 t ADT: 23

NB JORDAN ROAD

Fair

Over: HAPPY CANYON CREEK

.3 MI S BRONCOS PARKWAY, Arapahoe, CO

Built 2000 Load: 51.6 t ADT: 14,117

SB JORDAN ROAD

Fair

Over: HAPPY CANYON CREEK

.3 MI S BRONCOS PARKWAY, Arapahoe, CO

Built 2001 Load: 51.6 t ADT: 13,687

RICHMAN STREET

Fair

Over: NORTH CLEAR CREEK

JUST S OF SH 119, Gilpin, CO

Built 1998 Load: 51.6 t ADT: 2,291

SHADY LANE

Fair

Over: BEAR CREEK

IN IDLEDALE, Jefferson, CO

Built 1987 Load: 51.6 t ADT: 117

QUINCY AVE

Fair

Over: SH 470 ML

0.5 MI SE OF SH470+US285, Jefferson, CO

Built 1989 Load: 51.7 t ADT: 10,599

SH 149 ML

Fair

Over: WILLOW CREEK

CREEDE, Mineral, CO

Built 1930 Load: 51.7 t ADT: 1,800

County Road QQ

Fair

Over: Jack Creek

10 MI N of Co. Rd. 20, Washington, CO

Built 1997 Load: 51.7 t ADT: 4

I 25 ML SBND

Fair

Over: SH 60 ML

2.1 MI SO OF JCT SH 402, Weld, CO

Built 2022 Load: 51.8 t ADT: 2,300

SH 91 ML

Fair

Over: I 70 ML

AT COPPER MOUNTAIN, Summit, CO

Built 1977 Load: 51.8 t ADT: 7,700

I 25 (RMP B)

Fair

Over: RR SPUR

JUST S OF 6th AVE INTCHNG, Denver, CO

Built 2014 Load: 51.8 t ADT: 215,000

SH 94 ML

Fair

Over: DRAW

6.7 MI E OF YODER, El Paso, CO

Built 1972 Load: 51.8 t ADT: 1,100

US 40 ML

Fair

Over: DRAW

20.2 MI SE OF HUGO, Lincoln, CO

Built 1992 Load: 51.8 t ADT: 3,300

SH 96 ML

Fair

Over: BLUE RIBBON ARROYO

22.4 MI E OF CUSTER-PUEBL, Pueblo, CO

Built 1950 Load: 51.8 t ADT: 4,000

Showing 4,751-4,800 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.