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

MONROE STREET

Good

Over: I 70 ML

0.1 MI W of COLO. BLVD., Denver, CO

Built 2020 Load: 33.0 t ADT: 5,970

SH 2 COLO. BLVD.

Good

Over: I70 ML

0.5 MI E of STEELE ST., Denver, CO

Built 2020 Load: 33.0 t ADT: 49,000

HOGBACK ROAD

Good

Over: TURKEY CREEK

1.0 MI E OF CO 8, Jefferson, CO

Built 2018 Load: 33.0 t ADT: 220

I 70 FRONTAGE RD

Good

Over: I 70 ML

2.9 MI W OF DEBEQUE EXIT, Mesa, CO

Built 1982 Load: 33.0 t ADT: 25

29 Road

Good

Over: RR/I70 Business

OVER I-70 BUSINESS RTE, Mesa, CO

Built 2010 Load: 33.0 t ADT: 17,784

BIJOU STREET

Good

Over: I25 ML

IN COLORADO SPRINGS, El Paso, CO

Built 2008 Load: 33.0 t ADT: 28,219

SH 94 ML

Good

Over: E BR STEEL FORK CRK.

16 MI W OF PUNKIN CENTER, Lincoln, CO

Built 1968 Load: 33.0 t ADT: 630

SH 71 ML

Good

Over: MIDDLE RUSH CREEK

7.7 MI N OF SH 94-PUNKIN, Lincoln, CO

Built 2008 Load: 33.0 t ADT: 700

SH 115 ML

Good

Over: BEAVER CREEK

2.9 MI N OF PENROSE, Fremont, CO

Built 2002 Load: 33.0 t ADT: 8,900

County Road 2.5

Good

Over: Prewitt Outlet Canal

0.5 MI W of US HWY 6, Logan, CO

Built 2011 Load: 33.0 t ADT: 27

Wildbriar Lane

Good

Over: Big Thompson River

0.2 Mi NW Cedar Cove Rd, Larimer, CO

Built 2019 Load: 33.0 t ADT: 5

COUNTY ROAD I.9

Good

Over: GOVNMENT HIGHLINE CANAL

AT CAMEO, Mesa, CO

Built 2017 Load: 33.0 t ADT: 309

SH 89 ML

Good

Over: DRAW

4.8 MI NO OF JCT SH 116, Baca, CO

Built 2002 Load: 33.0 t ADT: 130

I 25 ML SBND

Good

Over: SH12 RR CITY ST DITCH

IN TRINIDAD, Las Animas, CO

Built 2010 Load: 33.0 t ADT: 8,000

County Road 28

Good

Over: Cottonwood Creek

0.2 Mi E. of Co. Rd. 3, Sedgwick, CO

Built 1992 Load: 33.0 t ADT: 29

County Road 53

Good

Over: South Platte River

1.4 MI NO OF JCT US 34, Weld, CO

Built 2020 Load: 33.0 t ADT: 4,689

SH 125 ML

Good

Over: NORTH PLATTE RIVER

16 MILES NORTH OF WALDEN, Jackson, CO

Built 1986 Load: 33.1 t ADT: 420

KIPLING STREET

Good

Over: VAN BIBBER CREEK

JUST SOUTH OF 58TH AVENUE, Jefferson, CO

Built 2006 Load: 33.1 t ADT: 279

COUNTY ROAD 107

Good

Over: SOUTH ARKANSAS RIVER

1.1 MI S OF SALIDA, Chaffee, CO

Built 1985 Load: 33.1 t ADT: 1,176

26TH AVENUE

Good

Over: WESTERLY CREEK

JUST EAST OF BEELER ST, Denver, CO

Built 2005 Load: 33.1 t ADT: 2,690

E-470 SB

Good

Over: Coal Creek

18.44 MI FROM I25, Arapahoe, CO

Built 1997 Load: 33.1 t ADT: 19,755

BERRIDGE ROAD

Good

Over: HORSE CREEK

1.9 MI N OF JUDGE ORR RD, El Paso, CO

Built 1998 Load: 33.1 t ADT: 69

MINER STREET

Good

Over: CLEAR CREEK

MINER ST OVER CLEAR CREEK, Clear Creek, CO

Built 1990 Load: 33.1 t ADT: 951

I 25 ML SBND

Good

Over: STEEL HOLLOW

8.2 MI S OF EL PASO-PUEBL, Pueblo, CO

Built 2006 Load: 33.1 t ADT: 17,500

COUNTY ROAD N

Good

Over: CROOKED ARROYO TRIBUTARY

JUST E OF OF CR 21.75, Otero, CO

Built 2001 Load: 33.1 t ADT: 12

County Road 84

Good

Over: Larimer County Canal

0.6 Mi E of Co Rd 19, Weld, CO

Built 1990 Load: 33.1 t ADT: 96

I 76 ML EBND

Good

Over: US 6 ML

STERLING EXIT, Logan, CO

Built 1994 Load: 33.2 t ADT: 4,250

Niwot Road CR34

Good

Over: Boulder Feeder Ditch

100 Ft. E of N. 55th St, Boulder, CO

Built 2010 Load: 33.2 t ADT: 2,084

BANNOCK ST

Good

Over: MISSISSIPPI AVENUE

BANNOCK AT MISSISSIPPI AV, Denver, CO

Built 1984 Load: 33.2 t

SERVICE ROAD

Good

Over: MISSISSIPPI AVENUE

BTWN BRDWY AND SANTA FE, Denver, CO

Built 1984 Load: 33.2 t

US 24 ML EBND

Good

Over: CITY ST UP RR DITCH

.2 MI E OF JCT I-25, El Paso, CO

Built 1990 Load: 33.2 t ADT: 47,000

I 25 ML NBND

Good

Over: SAND CREEK

1.1 MI NW EL PASO PUEBLO, El Paso, CO

Built 1929 Load: 33.2 t ADT: 17,500

Grandview Meadow D

Good

Over: Dry Creek

0.4 Mi So of Nelson Rd, Boulder, CO

Built 2004 Load: 33.2 t ADT: 3,692

US 287 ML

Good

Over: DRAW

6 MILES S. OF LAMAR, Prowers, CO

Built 1948 Load: 33.2 t ADT: 3,000

COUNTY ROAD 59

Good

Over: SOUTH PLATTE RIVER

NW ELEVEN MI RESERVOIR, Park, CO

Built 1986 Load: 33.2 t ADT: 239

I 70 EB OFFRAMP

Good

Over: CO RIVER BP R

W. OF HANGING LAKE TUNNEL, Garfield, CO

Built 1992 Load: 33.3 t ADT: 356

NFSR 44.1

Good

Over: N.FORK ELK RIVER

~ 2 MI SSW OF DIAMOND PK, Routt, CO

Built 2000 Load: 33.4 t ADT: 19

FDR 700

Good

Over: SANDSTONE CR

NO DATA ENTERED, Eagle, CO

Built 2021 Load: 33.4 t ADT: 50

County Road 67

Good

Over: S Fk Williams Fk River

7.1 Mi S of Co Rd 29, Routt, CO

Built 1994 Load: 33.4 t ADT: 22

SCHUMAKER ROAD

Good

Over: LOST CREEK TRIBUTARY

0.1 MI S OF US HWY 36, Adams, CO

Built 1993 Load: 33.4 t ADT: 10

COUNTY ROAD M.5

Good

Over: CULEBRA CREEK

.2 MI SE OF CR L.7, Costilla, CO

Built 1992 Load: 33.4 t ADT: 84

WATERTON ROAD

Good

Over: LOUVIERS GULCH

0.9 MI W OF LOUVIERS BLVD, Douglas, CO

Built 2020 Load: 33.4 t ADT: 476

E470 RAMP - I76 EB

Good

Over: Relocated Third Creek

35.28 MI FROM I25, Adams, CO

Built 2002 Load: 33.4 t ADT: 3,000

BAPTIST ROAD

Good

Over: MONUMENT CREEK

0.5 MI W OF I-25, El Paso, CO

Built 2015 Load: 33.4 t ADT: 4,184

I 70 ML WBND

Good

Over: HILLSIDE

1.8 MI E OF GLENWD SPGS, Garfield, CO

Built 1986 Load: 33.4 t ADT: 8,500

I 70 ML WBND

Good

Over: I70 RAMP RR COLO RVR

W END HANGING LAKE TUNNEL, Garfield, CO

Built 1992 Load: 33.4 t ADT: 8,500

I 25 ML SBND

Good

Over: SH 470 ML

JCT I 25 AND SH 470, Douglas, CO

Built 1990 Load: 33.4 t ADT: 80,000

RICHMOND HILL ROAD

Good

Over: US 285 ML

NEAR CONIFER, Jefferson, CO

Built 2008 Load: 33.4 t ADT: 1,587

EBND FILLMORE ST.

Good

Over: I 25 ML

IN COLORADO SPRINGS, El Paso, CO

Built 2016 Load: 33.4 t ADT: 19,612

SH 67 ML

Good

Over: AREQUA GULCH

TELLER COUNTY, Teller, CO

Built 2001 Load: 33.4 t ADT: 900

Showing 6,601-6,650 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.