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 160 ML

Fair

Over: DEVIL CREEK

18 MI W. OF PAGOSA SPRING, Archuleta, CO

Built 1955 Load: 20.0 t ADT: 4,300

I 25 ML NBND

Fair

Over: COUNTY ROAD DRAW

7.5 MI NO OF NEW MEXICO S, Las Animas, CO

Built 1967 Load: 20.0 t ADT: 6,000

COUNTY ROAD L

Fair

Over: EAST FORK CLAY CREEK

3.4 MI E OF CR 3, Prowers, CO

Built 1965 Load: 20.0 t ADT: 22

COUNTY ROAD 3S

Fair

Over: EMPIRE CANAL

1.1 MI E OF CR. 3E, Rio Grande, CO

Built 1968 Load: 20.0 t ADT: 42

COUNTY ROAD 7W

Fair

Over: RIO GRANDE CANAL

.4 MI N OF SH 374, Rio Grande, CO

Built 1966 Load: 20.0 t ADT: 17

County Road 45.5

Fair

Over: Latham Ditch

0.2 Mi N of Co Rd 54.5, Weld, CO

Built 1970 Load: 20.0 t ADT: 14

County Road 53

Fair

Over: Gilmore Ditch

0.7 Mi N of Co Rd 42, Weld, CO

Built 1990 Load: 20.0 t ADT: 363

County Road 70

Fair

Over: New Cache LaPoudre Canal

0.8 Mi E of Co Rd 49, Weld, CO

Built 1985 Load: 20.0 t ADT: 36

Access State Park

Fair

Over: Franklin Eddy Canal

San Luis State Park, Alamosa, CO

Built 1985 Load: 20.1 t ADT: 50

WOODMEN ROAD

Fair

Over: MONUMENT CREEK

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

Built 1988 Load: 20.1 t ADT: 21,121

I 25 ML

Fair

Over: BIG DRY CREEK

1.6 MI NO OF JCT SH 128, Adams, CO

Built 1956 Load: 20.1 t ADT: 116,000

CO RD 29

Fair

Over: CEBOLLA CREEK

Just South of CR 27, Gunnison, CO

Built 1965 Load: 20.1 t ADT: 44

US 50 ML WBND

Fair

Over: TURKEY CREEK

5.9 MI E OF FREMONT-PUEBL, Pueblo, CO

Built 1934 Load: 20.1 t ADT: 4,900

PIERCE ST

Fair

Over: WEIR GULCH

AT KENTUCKY AVENUE, Jefferson, CO

Built 1966 Load: 20.1 t ADT: 6,278

County Road 38

Fair

Over: Slater Creek

0.16 Mi West of Co Rd 1, Moffat, CO

Built 1978 Load: 20.1 t ADT: 36

COUNTY ROAD 4

Fair

Over: ROCKY FORD HIGHLINE CANA

.2 MI S OF CR HH, Otero, CO

Built 1992 Load: 20.1 t ADT: 85

SH 12 ML

Fair

Over: MIDDLE FK PURGATOIRE RVR

6.3 MI SE OF MONUMENT PAR, Las Animas, CO

Built 1938 Load: 20.1 t ADT: 320

County Road 50

Fair

Over: Gilmore Annex Canal

0.5 Mi E of Co Rd 51, Weld, CO

Built 1982 Load: 20.1 t ADT: 1,266

FERN ROAD

Fair

Over: COAL CREEK

3 MI SW OF OLATHE, Montrose, CO

Built 1985 Load: 20.2 t ADT: 51

County Road 8

Fair

Over: Phillips Creek

0.5 Mi E of St Hwy 131, Routt, CO

Built 1950 Load: 20.2 t ADT: 28

CONVERSE ROAD

Fair

Over: LOST CREEK TRIBUTARY

.6 MI S OF 104TH AVENUE, Adams, CO

Built 1960 Load: 20.2 t ADT: 52

US 34 ML

Fair

Over: DRAW

3.8 MI W OF LOVELAND, Larimer, CO

Built 1933 Load: 20.2 t ADT: 4,900

COUNTY ROAD 22.3

Fair

Over: CULEBRA CREEK

BETWEEN CR L.7 AND M.5, Costilla, CO

Built 1984 Load: 20.2 t ADT: 21

RAMP TO US 36 WB

Fair

Over: I 25 SBML HOV lanes

RAMP R OVER I 25, Adams, CO

Built 1998 Load: 20.2 t ADT: 72,000

I 25 ML

Fair

Over: HIGHLINE CANAL

0.4 MI S OF YALE INT., Denver, CO

Built 1950 Load: 20.2 t ADT: 213,000

17th Street

Fair

Over: Greeley No. 3 Ditch

Btwn 6th and 7th Ave, Weld, CO

Built 1984 Load: 20.2 t ADT: 462

US 550 ML

Fair

Over: CEDAR WASH

S. side of Montrose, Montrose, CO

Built 1936 Load: 20.2 t ADT: 25,000

COUNTY ROAD 36.25

Fair

Over: GRAND VALLEY CANAL

.5 MI S OF US 6, Mesa, CO

Built 1968 Load: 20.2 t ADT: 163

CR 37.9 BOWER AV

Fair

Over: GOVT. HIGHLINE CANAL

JUST N OF RD G.7, Mesa, CO

Built 1989 Load: 20.2 t ADT: 108

144TH AVENUE

Fair

Over: BURLINGTON CANAL

0.5 MI E OF PICADILLY RD, Adams, CO

Built 1985 Load: 20.3 t ADT: 1

I 70 ML WBND

Fair

Over: CR 42 DITCH

2.6 MI W OF ELBERT CL, Arapahoe, CO

Built 1965 Load: 20.3 t ADT: 5,500

I 70 ML

Fair

Over: US 6 ML UPRR COLO RIVER

3.0 MI E OF PALISADE, Mesa, CO

Built 1962 Load: 20.3 t ADT: 18,000

US 40 ML

Fair

Over: ADOBE GULCH

4.9 MI SE OF LINCOLN-CHEY, Cheyenne, CO

Built 1937 Load: 20.3 t ADT: 3,300

US 350 ML

Fair

Over: DRAW

11.6 MILES NE OF MODEL, Las Animas, CO

Built 1937 Load: 20.3 t ADT: 470

COUNTRY CLUB ROAD

Fair

Over: I 25 ML

IN TRINIDAD, Las Animas, CO

Built 1959 Load: 20.3 t ADT: 16,000

COUNTY ROAD Z

Fair

Over: SAGUACHE CREEK

1.5 MI W OF CR 46, Saguache, CO

Built 1987 Load: 20.3 t ADT: 187

US 40 ML

Fair

Over: HIGHLINE CANAL

2.4 MI E OF I225, Arapahoe, CO

Built 1954 Load: 20.4 t ADT: 22,000

RAMP TO TAMARAC

Fair

Over: I 225 ML NBND R

IN DENVER, Denver, CO

Built 1976 Load: 20.4 t ADT: 5,636

US285 ML

Fair

Over: PONCHA CREEK

5.0 MI S OF JCT US50, Chaffee, CO

Built 1938 Load: 20.4 t ADT: 2,800

US 50 ML

Fair

Over: DRAW

15 MI SE OF SALIDA, Fremont, CO

Built 1934 Load: 20.4 t ADT: 3,600

County Road 25E

Fair

Over: Pleas Valley Lake Canal

1.3 Mi N of Co Rd 52E, Larimer, CO

Built 1963 Load: 20.4 t ADT: 347

County Road 54E

Fair

Over: Pleas. Valley Lake Canal

0.7 Mi E of Co Rd 27E, Larimer, CO

Built 1962 Load: 20.4 t ADT: 246

County Road 56

Fair

Over: Larimer County Canal

1.1 Mi E of I-25, Larimer, CO

Built 1940 Load: 20.4 t ADT: 221

COUNTY ROAD 30

Fair

Over: HOLBROOK CANAL

40 FEET W CR 808, Otero, CO

Built 1974 Load: 20.4 t ADT: 19

COUNTY ROAD 3

Fair

Over: CRYSTAL RIVER

E SH133 REDSTONE/MP51.4, Pitkin, CO

Built 1947 Load: 20.4 t ADT: 713

County Road 57

Fair

Over: Latham Ditch

0.4 Mi N of Co Rd 52, Weld, CO

Built 1960 Load: 20.4 t ADT: 452

PINE CLIFF ROAD

Fair

Over: WEST PLUM CREEK

0.4 MI W COUNTY ROAD 105, Douglas, CO

Built 1965 Load: 20.5 t ADT: 71

YOSEMITE STREET

Fair

Over: I-25 and LIGHT RAIL

YOSEMITE OVER I-25, Arapahoe, CO

Built 1983 Load: 20.5 t ADT: 10,915

SH 133 FRONTAGE RD

Fair

Over: HUBBARD CREEK

ORIG 133 NEAR BOWIE, Delta, CO

Built 1937 Load: 20.5 t ADT: 10

BAXTER RD

Fair

Over: ARKANSAS RIVER OVFLW

1.1 MI N OF JCT US 50B, Pueblo, CO

Built 1963 Load: 20.5 t ADT: 5,249

Showing 601-650 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.