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

I25NB RAMP TO C470

Fair

Over: I 25 SH 470 ML RAMPS R

TOP FLYOVER JCT I-25 &am, Douglas, CO

Built 1985 Load: 12.3 t ADT: 47,000

COUNTY ROAD F

Fair

Over: NORTH BUTTE CREEK

1 MI W OF CR 16, Prowers, CO

Built 1965 Load: 12.3 t ADT: 45

COUNTY ROAD F

Fair

Over: EAST FORK ADOBE CREEK

1.7 MILES EAST OF ROAD 34, Lincoln, CO

Built 1950 Load: 12.4 t ADT: 10

County Road 24

Fair

Over: Little Grizzly Creek

2.7 Mi W of St Hwy 14, Jackson, CO

Built 1977 Load: 12.6 t ADT: 113

COUNTY ROAD 501

Fair

Over: VALLECITO CREEK

0.5 MI E OF N VALLECITO, La Plata, CO

Built 1971 Load: 12.6 t ADT: 640

US 36 ML

Fair

Over: BEAVER CREEK

4.9 MI W OF LAST CHANCE, Washington, CO

Built 1935 Load: 12.6 t ADT: 560

COUNTY ROAD 67

Fair

Over: EIGHT MILE CREEK

12.7 MI N OF CR 123, Fremont, CO

Built 1991 Load: 12.8 t ADT: 44

COUNTY ROAD 67

Fair

Over: EIGHT MILE CREEK

7.25 MI N OF CR 123, Fremont, CO

Built 1936 Load: 12.8 t ADT: 28

COUNTY ROAD Z

Fair

Over: OTERO CANAL

.2 MI W OF CR 19, Otero, CO

Built 1968 Load: 12.9 t ADT: 27

COUNTY ROAD 33

Fair

Over: AMITY CANAL

0.5 MI N OF CR LL, Prowers, CO

Built 1960 Load: 12.9 t ADT: 67

WINDING ROAD 788

Fair

Over: CEBOLLA CREEK

40 MI. S.W. GUNNISON CO., Hinsdale, CO

Built 1967 Load: 13.0 t ADT: 47

RMP TO EB I70/I76

Fair

Over: I 70 ML SH 121 R

IN ARVADA, Jefferson, CO

Built 1985 Load: 13.0 t ADT: 38,000

RMP I70EB TO I25NB

Fair

Over: I 25 ML I 70 ML RAMPS R

DENVER OVER MOUSETRAP, Denver, CO

Built 1992 Load: 13.0 t ADT: 7,800

I 70 ML EBND

Fair

Over: TIMBER CREEK

6 MI W OF VAIL PASS SUMMI, Eagle, CO

Built 1977 Load: 13.0 t ADT: 10,000

I 70 ML EBND

Fair

Over: WILDER GULCH

1 MI E OF EAGLE SUMMIT CL, Summit, CO

Built 1977 Load: 13.0 t ADT: 10,000

I25 ML

Fair

Over: BRDWY BNSF UPRR RTD LR

IN DENVER, Denver, CO

Built 2002 Load: 13.0 t ADT: 188,000

COUNTY ROAD 67

Fair

Over: TRIB TO EIGHT MILE CREEK

18.1MI N OF CR 123, Fremont, CO

Built 1992 Load: 13.0 t ADT: 24

COUNTY RD 6.8

Fair

Over: SALAZAR ARROYO

0.1 MI W OF CR 121.9, Las Animas, CO

Built 1968 Load: 13.0 t ADT: 44

County Road 15

Fair

Over: Boxelder Creek

0.8 Mi N of Co Rd 78, Larimer, CO

Built 1980 Load: 13.0 t ADT: 365

County Road 82

Fair

Over: Rawhide Creek

0.2 Mi E of Co Rd 15, Larimer, CO

Built 1980 Load: 13.0 t ADT: 363

COUNTY ROAD 5N

Fair

Over: RIO GRANDE CANAL

4.7 MI N OF MONTE VISTA, Rio Grande, CO

Built 1940 Load: 13.0 t ADT: 62

COUNTY ROAD 32

Fair

Over: HOLLY SEEP

.7 MI N OF SH 50, Prowers, CO

Built 1993 Load: 13.1 t ADT: 127

COUNTY ROAD 4405

Fair

Over: FIRE MOUNTAIN CANAL

2 Mi NE of SH133/Bowie RD, Delta, CO

Built 1976 Load: 13.2 t ADT: 38

I 76 ML EBND

Fair

Over: 60TH AVE & DITCH

3.8 MI E OF I70 + I76 INT, Adams, CO

Built 1988 Load: 13.2 t ADT: 38,500

US 40 RAMP

Fair

Over: I25 ML US40 ML PLTE RVR

RAMP OVER I25 TO WB COLFA, Denver, CO

Built 1987 Load: 13.2 t ADT: 49,000

County Road 21C

Fair

Over: Cache La Poudre River

0.2 Mi N of Co Rd 50E, Larimer, CO

Built 1976 Load: 13.2 t ADT: 3,333

COUNTY ROAD I.9

Fair

Over: COLORADO RIVER

AT CAMEO POWER PLANT, Mesa, CO

Built 1994 Load: 13.2 t ADT: 558

MEL HARMON DR.

Fair

Over: MALL DR DRGWRR

IN PUEBLO, Pueblo, CO

Built 1976 Load: 13.2 t ADT: 1,486

COUNTY ROAD 9

Fair

Over: WILLOW CREEK DRAIN

.1 MI SOUTH OF SH 50, Prowers, CO

Built 1973 Load: 13.3 t ADT: 297

Oxford Rd (Cr 26)

Fair

Over: Boulder Feeder Ditch

0.3 Mi W of Co Rd 41, Boulder, CO

Built 1950 Load: 13.4 t ADT: 422

COUNTY ROAD 67

Fair

Over: UNNAMED CREEK

8.5 MI N OF CR 123, Fremont, CO

Built 1995 Load: 13.4 t ADT: 29

County Road 3

Fair

Over: Kiowa Creek

3.7 Mi N of Co Rd M, Morgan, CO

Built 1965 Load: 13.4 t ADT: 265

County Road 44

Fair

Over: Hillsbourough Ditch

0.9 Mi E of Co Rd 13, Weld, CO

Built 1987 Load: 13.4 t ADT: 178

COUNTY ROAD 17

Fair

Over: NORTH FORK LONE ROCK CRK

1.1 MI N OF CR Y, Baca, CO

Built 1960 Load: 13.5 t ADT: 31

76TH AVENUE

Fair

Over: LITTLE DRY CREEK

1/2 BLK E OF SHERIDAN AVE, Adams, CO

Built 1988 Load: 13.5 t ADT: 4,417

CR123 (3RD STREET)

Fair

Over: BRUSH HOLLOW CREEK

.5 MI W OF A STREET, Fremont, CO

Built 1928 Load: 13.6 t ADT: 683

SH 340 ML EBND

Fair

Over: COLORADO RIVER

0.8 MI W OF JCT I 70 BUS, Mesa, CO

Built 1950 Load: 13.6 t ADT: 9,500

Sheridan Avenue

Fair

Over: Drainage Ditch

Prussman & Sheridan Ave, El Paso, CO

Built 1942 Load: 13.6 t ADT: 5,600

COUNTY ROAD 34

Fair

Over: FT. LYON CANAL

JUST N OF CR NN, Bent, CO

Built 1950 Load: 13.7 t ADT: 71

COUNTY ROAD A.5

Fair

Over: TRIB. OF HACKBERRY CREEK

.2 MI SE OF CR 18, Bent, CO

Built 1960 Load: 13.7 t ADT: 71

GALLUP ST

Fair

Over: HIGHLINE CANAL

0.18 MI S OF GEDDES AVE, Arapahoe, CO

Built 1962 Load: 13.7 t ADT: 255

COUNTY ROAD LL

Fair

Over: EAST HORSE CREEK

.4 MI E OF CR 35, Prowers, CO

Built 1978 Load: 13.7 t ADT: 39

I 25 ML NBND

Fair

Over: AF ACADEMY (NORTH GATE)

5.6 MI N OF JCT SH 83 ML, El Paso, CO

Built 1958 Load: 13.8 t ADT: 46,000

COUNTY RD 41.7

Fair

Over: SARCILLO CANYON CREEK

7.8 MI N OF SH 12, Las Animas, CO

Built 1983 Load: 13.8 t ADT: 122

SH 12 ML

Fair

Over: N FK PURGATOIRE RIVER

4.2 MI E OF STONEWALL, Las Animas, CO

Built 1938 Load: 13.8 t ADT: 320

FDR 814

Fair

Over: W DIVIDE CR

CAYTON GUARD STATION, Mesa, CO

Built 1965 Load: 13.9 t ADT: 10

I 70 WBND

Fair

Over: Accs RD|Rst Area|CO Rivr

SHOSHONE POWER PLANT, Garfield, CO

Built 1989 Load: 13.9 t ADT: 8,500

MAPLE STREET

Fair

Over: LITTLE SALT WASH

.3 MI N OF OTTLEY AVE, Mesa, CO

Built 1970 Load: 13.9 t ADT: 2,615

SH 93 ML

Fair

Over: SOUTH BOULDER CREEK

0.4 MI N OF JCT SH 170 +, Boulder, CO

Built 1969 Load: 14.0 t ADT: 17,000

US 160 ML

Fair

Over: W FORK SAN JUAN RIVER

10 MI E OF PAGOSA SPRINGS, Archuleta, CO

Built 1986 Load: 14.0 t ADT: 4,100

Showing 101-150 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.