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

COUNTY ROAD 24

Good

Over: ARIKAREE RIVER

0.8 MI NORTH OF ROAD 3R, Lincoln, CO

Built 2002 Load: 55.7 t ADT: 8

I 25 ML SBND

Good

Over: MAIN STREET

IN TRINIDAD, Las Animas, CO

Built 2012 Load: 55.7 t ADT: 8,000

RICHTHOFEN PLACE

Good

Over: WESTERLY CREEK

RICHTHOFEN AND XANTHIA, Denver, CO

Built 1965 Load: 55.8 t ADT: 334

COUNTY ROAD 23

Good

Over: TIMPAS CREEK

.6 MI S OF CR CC, Otero, CO

Built 1997 Load: 55.8 t ADT: 90

SH 2 ML

Good

Over: US 6 ML

IN COMMERCE CITY, Adams, CO

Built 1987 Load: 55.9 t ADT: 6,100

COMMERCIAL STREET

Good

Over: PURGATOIRE RIVER

IN TRINIDAD, Las Animas, CO

Built 1990 Load: 55.9 t ADT: 4,100

COUNTY ROAD RR

Good

Over: TRIB. OF TWO BUTTES CRK

.6 MI E OF CR 12, Baca, CO

Built 1998 Load: 56.0 t ADT: 17

SH 83 ML

Good

Over: RUSSELLVILLE GULCH

11.5 MI N OF JCT SH 105, Douglas, CO

Built 1976 Load: 56.0 t ADT: 7,900

County Road 17

Good

Over: Dove Creek Canal Reach 1

Yellow Jacket Colorado, Montezuma, CO

Built 1984 Load: 56.1 t ADT: 20

FDR 114

Good

Over: MIDDLE ST. VRAIN CREEK

0.94 MI WEST OF CO HWY 72, Boulder, CO

Built 1952 Load: 56.1 t ADT: 90

Bow Mountain Rd.

Good

Over: Fourmile Creek

20 ft S of Wagonwheel Rd, Boulder, CO

Built 2019 Load: 56.1 t ADT: 124

US 24 ML

Good

Over: CLEAR CRK RESV SPILLWAY

2.5 MI SE OF GRANITE, Chaffee, CO

Built 1983 Load: 56.1 t ADT: 2,700

I 76 ML WBND

Good

Over: COUNTY ROAD 49

4.5 MI W of Keenesburg, Weld, CO

Built 2000 Load: 56.2 t ADT: 10,500

US 40 ML

Good

Over: ST LOUIS CREEK

AT NW END OF FRASER, Grand, CO

Built 1975 Load: 56.2 t ADT: 9,800

COUNTY ROAD 59

Good

Over: LITTLE BEAVER CREEK

0.1 MILE NORTH OF ROAD KK, Kit Carson, CO

Built 1994 Load: 56.2 t ADT: 42

BRADLEY ROAD

Good

Over: JIMMY CAMP CREEK

.33 MI E MARKSHEFFEL RD, El Paso, CO

Built 1999 Load: 56.3 t ADT: 2,812

County Road 17.5

Good

Over: Big Salt Wash

.3 MI N of CR M, Mesa, CO

Built 2012 Load: 56.4 t ADT: 834

COUNTY ROAD 30

Good

Over: GOVT. HIGHLINE CANAL

0.1 MI N OF CR G, Mesa, CO

Built 1994 Load: 56.5 t ADT: 96

17TH PLACE

Good

Over: I-225

0.3 MI N OF COLFAX AVE, Adams, CO

Built 2013 Load: 56.6 t ADT: 10,438

I25 NB OFF_ON RAMP

Good

Over: CHEYENNE CREK

IN COLORADO SPRINGS, El Paso, CO

Built 2002 Load: 56.6 t ADT: 44,000

COUNTY ROAD 14A

Good

Over: DEXTER CREEK

2.8 MI N OF OURAY, Ouray, CO

Built 1999 Load: 56.7 t ADT: 66

SH 142 ML

Good

Over: CONEJOS RIVER

2 M E OF MANASSA, Conejos, CO

Built 1984 Load: 56.7 t ADT: 530

CROWFOOT VALLEY RD

Good

Over: LEMON GULCH

0.6 MI S OF STROH ROAD, Douglas, CO

Built 2002 Load: 56.7 t ADT: 5,095

County Road Y

Good

Over: Trib S Fk Republican Riv

0.30 Mi North of Cty Line, Yuma, CO

Built 1989 Load: 56.7 t ADT: 68

CR 48 (Vine Dr.)

Good

Over: Larimer County Canal #2

0.2 Mi E of Taft Hill, Larimer, CO

Built 1966 Load: 56.8 t ADT: 7,096

County Road RR

Good

Over: Arikaree River

1.20 Mi N of Co Rd 23, Yuma, CO

Built 1991 Load: 56.9 t ADT: 39

NFSR 7765

Good

Over: WILLOW CREEK

27.5 MI NE OF ALMONT CO, Gunnison, CO

Built 2018 Load: 57.0 t ADT: 363

I 70 ML WBND

Good

Over: I70Q (ROSE AVE.)

1.4 MI. E. OF US 385, Kit Carson, CO

Built 2009 Load: 57.0 t ADT: 4,000

I 70 ML EBND

Good

Over: I70Q (ROSE AVE.)

1.4 MI. E. OF HWY 385, Kit Carson, CO

Built 2009 Load: 57.0 t ADT: 4,000

SH 67 ML

Good

Over: DRAW

5.9 MI. S. OF FLORENCE, Fremont, CO

Built 2013 Load: 57.0 t ADT: 1,300

I 25 ML NBND

Good

Over: MAIN STREET

In TRINIDAD, Las Animas, CO

Built 2009 Load: 57.0 t ADT: 8,000

LOWELL BLVD

Good

Over: CLEAR CREEK

BETWEEN 55TH PL AND I76, Adams, CO

Built 2000 Load: 57.1 t ADT: 3,731

College Avenue

Good

Over: Pine Ridge Gulch

50 Ft. S of First Street, Moffat, CO

Built 1995 Load: 57.2 t ADT: 148

ADAMS RANCH RD

Good

Over: WADDLE CREEK

CITY STREET - ADAMS RANCH, San Miguel, CO

Built 2000 Load: 57.2 t ADT: 172

US 85 ML

Good

Over: HIGHLINE CANAL

0.8 MI SO OF JCT SH 470, Douglas, CO

Built 1983 Load: 57.3 t ADT: 32,000

US 24 ML

Good

Over: UP RR

4 MI N OF LEADVILLE, Lake, CO

Built 2011 Load: 57.4 t ADT: 1,600

COUNTY ROAD 45

Good

Over: TRIB. OF CIMARRON RIVER

0.2 MI N OF CR G, Baca, CO

Built 2018 Load: 57.7 t ADT: 61

I 76 ML EBND

Good

Over: BOX ELDER CRK FRM ACC. R

2.4 MI NE OF JCT SH 52, Weld, CO

Built 2000 Load: 57.8 t ADT: 10,500

COUNTY ROAD 33

Good

Over: GRAND VALLEY CANAL

.2 MILES N OF ROAD E, Mesa, CO

Built 2009 Load: 57.8 t ADT: 3,258

US 138 ML

Good

Over: UP RR

2 MI W OF JULESBURG, Sedgwick, CO

Built 2000 Load: 57.9 t ADT: 1,300

FDR 597

Good

Over: FLORIDA RIVER

16.5 MI NE OF DURANGO, La Plata, CO

Built 1949 Load: 58.0 t ADT: 84

GREENWAY DRIVE

Good

Over: LITTLE SALT WASH

S OF US 6/W OF COLLSON DR, Mesa, CO

Built 2011 Load: 58.0 t ADT: 18

COUNTY ROAD 24

Good

Over: GRAND VALLEY CANAL

.4 MI N OF RD I, Mesa, CO

Built 2013 Load: 58.0 t ADT: 2,328

HARMONY RD/OLDSH68

Good

Over: I 25 ML

HARMONY RD/I25, Larimer, CO

Built 1999 Load: 58.1 t ADT: 54,909

MEADOWS BLVD

Good

Over: EAST PLUM CREEK TRIBUTAR

1.3 MI W OF MEADOWS PKWY, Douglas, CO

Built 1987 Load: 58.1 t ADT: 4,911

I 25 ML SBND

Good

Over: PLUM CREEK PARKWAY

S. END OF CASTLE ROCK, Douglas, CO

Built 2010 Load: 58.2 t ADT: 33,000

County Road 93

Good

Over: N. Sterling Outlet Canal

0.7 Mi N of Co Rd 66, Logan, CO

Built 2003 Load: 58.2 t ADT: 43

EB MONTVIEW BLVD

Good

Over: WESTERLY CREEK

0.26 MI E OF YOSEMITE ST., Adams, CO

Built 2014 Load: 58.3 t ADT: 10,147

US 34 ML

Good

Over: REPUBLICAN RIVER

IN WRAY, Yuma, CO

Built 2021 Load: 58.3 t ADT: 3,600

I70 ML WBND

Good

Over: DRIR

DENVER, Denver, CO

Built 2020 Load: 58.3 t ADT: 74,000

Showing 8,151-8,200 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.