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

US 350 ML

Good

Over: DRAW

1 MI NE OF TIMPAS, Otero, CO

Built 2023 Load: 46.0 t ADT: 440

County Road 64

Good

Over: Hinman Creek

5.0 Mi NE of Co Rd 129, Routt, CO

Built 1980 Load: 46.1 t ADT: 324

I 25 ML SBND

Good

Over: YOUNG HOLLOW

14.3 M S El Paso-Pueblo, Pueblo, CO

Built 1998 Load: 46.1 t ADT: 17,500

County Road Y

Good

Over: Riverside Canal

5.3 MI E OF SH52, Morgan, CO

Built 2008 Load: 46.1 t ADT: 289

Co Rd 52.25

Good

Over: Hillsborough Ditch

0.2 Mi E of Co Rd 13, Weld, CO

Built 2013 Load: 46.1 t ADT: 240

I 25 ML

Good

Over: SH 29 ML

CIRCLE DR. S. COLO SPRS, El Paso, CO

Built 2000 Load: 46.2 t ADT: 77,000

County Road 67

Good

Over: South Platte River

1.7 Mi N of I-76, Logan, CO

Built 2011 Load: 46.2 t ADT: 322

County Road 11

Good

Over: Larimer County Canal

1.1 Mi N of Co Rd 54, Larimer, CO

Built 1962 Load: 46.2 t ADT: 88

County Road 2

Good

Over: Riverside Canal

0.5 Mi N of County Rd 0.5, Morgan, CO

Built 2011 Load: 46.2 t ADT: 59

Weld Co Rd 7

Good

Over: Little Thompson River

0.5 Mi N of Co Rd 42, Weld, CO

Built 1990 Load: 46.3 t ADT: 1,818

I 25 ML SBND

Good

Over: LITTLE THOMPSON RIVER

0.4 MI SO OF JCT SH 56, Weld, CO

Built 2020 Load: 46.3 t ADT: 41,000

COUNTY ROAD 29

Good

Over: N.FK SMOKEY HILL RIVER

.4 MI N OF CR DD, Cheyenne, CO

Built 1993 Load: 46.3 t ADT: 11

MCINTYRE STREET

Good

Over: FARMERS HIGHLINE CANAL

1.7 MI N OF 44TH AVE, Jefferson, CO

Built 2019 Load: 46.3 t ADT: 17,056

SH 133 ACCESS RD

Good

Over: MUDDY CREEK AR

14 MI SW OF MCCLURE PASS, Gunnison, CO

Built 1980 Load: 46.3 t ADT: 62

COUNTY ROAD 36

Good

Over: HELL CREEK

1.1 MILES S OF ROAD 3M, Lincoln, CO

Built 1999 Load: 46.3 t ADT: 8

County Road 27

Good

Over: Buckhorn Creek

0.1 Mi N of Co Rd 32C, Larimer, CO

Built 2021 Load: 46.3 t ADT: 1,495

County Road 56

Good

Over: Larimer County Canal

0.6 Mi E of Co Rd 11, Larimer, CO

Built 2004 Load: 46.3 t ADT: 112

US 350 ML

Good

Over: DRAW

1 MILE SW OF TIMPAS, Otero, CO

Built 2012 Load: 46.3 t ADT: 470

CR40/DIVIDE ROAD

Good

Over: KANNAH CREEK

N of Kannah Rd MP 5.5, Mesa, CO

Built 2014 Load: 46.3 t ADT: 18

COUNTY ROAD G.2

Good

Over: ORCHARD MESA CANAL

JUST EAST OF CTY RD 39.4, Mesa, CO

Built 2003 Load: 46.3 t ADT: 73

WEST POLK STREET

Good

Over: MONUMENT CREEK

0.5 MI W OF CASCADE AVE, El Paso, CO

Built 1986 Load: 46.4 t ADT: 948

COUNTY ROAD 54

Good

Over: SMOKY HILL RIVER

.9 MI N OF CR U, Cheyenne, CO

Built 1995 Load: 46.4 t ADT: 14

SH 157 SBND

Good

Over: FOUR MILE CANYON CREEK

.25 MI S OF SH119 INTSN, Boulder, CO

Built 1988 Load: 46.4 t ADT: 20,500

CHERRY STREET

Good

Over: CHERRY CREEK

JUST S OF EXPOSITION AVE, Arapahoe, CO

Built 2000 Load: 46.4 t ADT: 16,097

SH 105 ML

Good

Over: I 25 ML

MONUMENT INTERCHANGE, El Paso, CO

Built 2004 Load: 46.4 t ADT: 19,000

COUNTY ROAD 47.7

Good

Over: PURGATOIRE RIVER

0.1 MI S OF SH 12, Las Animas, CO

Built 2009 Load: 46.4 t ADT: 166

County Road 39

Good

Over: Sterling No 1 Ditch

0.8 Mi N of Co Rd 30, Logan, CO

Built 1988 Load: 46.4 t ADT: 1,662

County Road 17

Good

Over: Larimer and Weld Canal

1.0 Mi N of Co Rd 48, Larimer, CO

Built 2005 Load: 46.4 t ADT: 8,985

COUNTY ROAD 192

Good

Over: GREENHORN CREEK

5.3 MI E OF RYE, Pueblo, CO

Built 1995 Load: 46.4 t ADT: 241

US 24 ML

Good

Over: DRAW

1.0 MI E OF SIMLA, Elbert, CO

Built 1985 Load: 46.5 t ADT: 3,200

COUNTY ROAD 2200

Good

Over: GUNNISON RIVER

.3 MI S OF SH 92, Delta, CO

Built 1998 Load: 46.6 t ADT: 1,013

County Road 66

Good

Over: Harmony No. 1 Canal

0.2 Mi E of Co Rd 89, Logan, CO

Built 1991 Load: 46.6 t ADT: 23

COUNTY ROAD DS

Good

Over: LITTLE DOLORES RIVER

JUST E OF MILE MARKER 11, Mesa, CO

Built 2013 Load: 46.6 t ADT: 141

County Road 57

Good

Over: Prewitt Canal Lateral

50 Ft. E. of Co. Rd. N, Washington, CO

Built 2002 Load: 46.6 t ADT: 29

County Road 6W

Good

Over: North Platte River

2.1 MI W of St Hwy 125, Jackson, CO

Built 2003 Load: 46.7 t ADT: 172

I 76 ML WBND

Good

Over: US 6 ML

STERLING EXIT, Logan, CO

Built 1994 Load: 46.7 t ADT: 4,250

County Road 27

Good

Over: Buckhorn Creek

9.6 Mi NW of Co Rd 38E, Larimer, CO

Built 2014 Load: 46.7 t ADT: 569

County Road 35.5

Good

Over: N. Fork Republican River

0.30 Mi E of Co Rd PP, Yuma, CO

Built 1992 Load: 46.7 t ADT: 66

County Road 26

Good

Over: Left Hand Creek

0.6 Mi W of Co Rd 33, Boulder, CO

Built 1991 Load: 46.8 t ADT: 121

SH 149 ML

Good

Over: RIO GRANDE

7 MI SW OF CREEDE, Mineral, CO

Built 1982 Load: 46.9 t ADT: 1,100

I 70 ML EBND

Good

Over: COLORADO RIVER

9.2 MI E OF GLENWD SPGS, Garfield, CO

Built 1987 Load: 47.0 t ADT: 8,500

RAMP TO N GATE

Good

Over: NB SH 21 RAMP

SH21 AND I25 INT, El Paso, CO

Built 2021 Load: 47.0 t ADT: 1,200

TWO CREEKS DRIVE

Good

Over: SKI RUN

JUST W OF SERVICE BERRY L, Pitkin, CO

Built 1997 Load: 47.0 t ADT: 251

County Road 44

Good

Over: Western Mutual Ditch

0.7 Mi E of US Hwy 85, Weld, CO

Built 2020 Load: 47.0 t ADT: 1,375

US 287 ML

Good

Over: LITTLE THOMPSON RIVER

5.1 MI N OF JCT SH 66, Larimer, CO

Built 1999 Load: 47.1 t ADT: 18,000

NORTH BRIDGE RD

Good

Over: VALLECITO CREEK

1.8 MI N VALLECITO LAKE, La Plata, CO

Built 1971 Load: 47.3 t ADT: 40

FALL RIVER ROAD

Good

Over: CLEAR CREEK

2.3 MI W of IDAHO SPRINGS, Clear Creek, CO

Built 2020 Load: 47.3 t ADT: 72

SH121 ML-WADSWORTH

Good

Over: BEAR CREEK

.8 MI. N. OF 285, Jefferson, CO

Built 2012 Load: 47.3 t ADT: 37,000

COUNTY RD 91

Good

Over: BIJOU CANAL

0.5 Mi S of US Hwy 34, Weld, CO

Built 2020 Load: 47.3 t ADT: 90

SH 394 ML

Good

Over: YAMPA RIVER

1 M SO OF CRAIG, Moffat, CO

Built 1985 Load: 47.4 t ADT: 3,100

Showing 7,851-7,900 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.