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

CR54 (37th St)

Fair

Over: Ashcroft Draw

0.5 Mi E of Co Rd 29.5, Weld, CO

Built 1992 Load: 24.2 t ADT: 8,996

COUNTY ROAD 36

Fair

Over: I 70 ML

BOVINA INTERCHANGE, Lincoln, CO

Built 1975 Load: 24.2 t ADT: 85

COUNTY ROAD 3

Fair

Over: I 70 ML

2.0 MI W. OF FLAGLER, Kit Carson, CO

Built 1975 Load: 24.2 t ADT: 14

I 70 ML EBND

Fair

Over: RR SALT CREEK

9.8 MI. E. COLO.-UTAH S.L, Mesa, CO

Built 1971 Load: 24.2 t ADT: 4,200

I 70 BUSINESS RT

Fair

Over: LEACH CREEK

GRAND JCT/REDLANDS PRKY, Mesa, CO

Built 1968 Load: 24.2 t ADT: 26,000

US 50 ML

Fair

Over: LOST CREEK

7.6 MI W. OF PONCHA SPGS., Chaffee, CO

Built 1939 Load: 24.2 t ADT: 2,600

County Road 17

Fair

Over: Lay Creek

4.5 Mi North of US Hwy 40, Moffat, CO

Built 1955 Load: 24.2 t ADT: 37

I 25 ML SBND

Fair

Over: SULL CREEK

1.7 MI N OF SH10-WLSNBRG., Huerfano, CO

Built 1963 Load: 24.2 t ADT: 4,650

HICKORY ROAD

Fair

Over: DRY CREEK

4.7 MI SW OF OLATHE, Montrose, CO

Built 1947 Load: 24.3 t ADT: 305

COUNTY ROAD 74

Fair

Over: UPPER BEAR CREEK

3 MI W JCT EVERGN LAKE, Jefferson, CO

Built 1992 Load: 24.3 t ADT: 1,308

POWER PLANT RD

Fair

Over: CASTLE CREEK

JUST WEST OF MEADOWS RD, Pitkin, CO

Built 1973 Load: 24.3 t ADT: 12,818

C. R. 41 (63rd St)

Fair

Over: St. Vrain Creek

0.5 Mi N of Co Rd 10, Boulder, CO

Built 1991 Load: 24.3 t ADT: 134

DUBLIN BLVD

Fair

Over: LOCAL DRAINAGE

.5 M W ACADEMY/LEMONWD RD, El Paso, CO

Built 1982 Load: 24.3 t ADT: 5,933

1ST AVENUE

Fair

Over: WEIR GULCH

BTWN RALEIGH/QUITMAN, Denver, CO

Built 1977 Load: 24.3 t ADT: 7,307

BRUSH CREEK RD

Fair

Over: EAST BRUSH CREEK

7.8 MI E OF QUZEL LANE, Eagle, CO

Built 1956 Load: 24.3 t ADT: 188

Fish Hatchery Road

Fair

Over: Fall River

0.2 Mi W of US Hwy 34, Larimer, CO

Built 1983 Load: 24.3 t ADT: 501

County Road 108

Fair

Over: Crystal River

E of Intersection CR 106, Garfield, CO

Built 1950 Load: 24.3 t ADT: 2,569

I 70 ML WBND

Fair

Over: UP RR River Rd

0.3 MI W OF US 6 ML, Mesa, CO

Built 1969 Load: 24.3 t ADT: 9,000

I 70 ML EBND

Fair

Over: CO RD UP RR

0.3 MI W OF GRAND JUNCTN, Mesa, CO

Built 1969 Load: 24.3 t ADT: 9,000

FIELD STREET

Fair

Over: COON CREEK

0.5 MI S OF BELLEVIEW AVE, Jefferson, CO

Built 1975 Load: 24.3 t ADT: 2,054

COUNTY RD 63.1

Fair

Over: CANYON DEL AGUA CREEK

.6 MI N OF CR 44, Las Animas, CO

Built 1930 Load: 24.3 t ADT: 38

I 25 ML NBND

Fair

Over: CO.RD 82 BUCKEYE ROAD

10 MI N OF WELLINGTON, Larimer, CO

Built 1963 Load: 24.4 t ADT: 12,500

Boston Ave (Cr 18)

Fair

Over: St. Vrain Creek

0.1 Mi E of Co Rd 15, Boulder, CO

Built 1990 Load: 24.4 t ADT: 9,636

SH 44 ML WBND

Fair

Over: I 76 ML

104TH AVE OVER I76, Adams, CO

Built 1996 Load: 24.4 t ADT: 9,000

RAMAH ROAD

Fair

Over: BIG SANDY CREEK

0.3 MI E OF RAMAH, El Paso, CO

Built 1965 Load: 24.4 t ADT: 62

County Road 17

Fair

Over: Lay Creek

9.9 Mi North of US Hwy 40, Moffat, CO

Built 1955 Load: 24.4 t ADT: 31

DAKOTA AVENUE

Fair

Over: CORNET CREEK

100 FT W of N ASPEN ST, San Miguel, CO

Built 2008 Load: 24.4 t ADT: 75

County Road 42

Fair

Over: Evans Ditch No. 2

0.1 Mi E of Co Rd 39, Weld, CO

Built 1991 Load: 24.4 t ADT: 86

IRR BIA RTE 204

Fair

Over: UTE CANYON

21.7 KM SE. OF TOWAOC CO, Montezuma, CO

Built 1975 Load: 24.5 t ADT: 100

IRR BIA RTE 204

Fair

Over: NAVAJO CANYON

23.3 KM SE OF TOWAOC CO, Montezuma, CO

Built 1975 Load: 24.5 t ADT: 100

Gold Camp Road

Fair

Over: NO DATA ENTERED

Int. of Bear Creek Rd, El Paso, CO

Built 1970 Load: 24.5 t ADT: 623

FDR 504

Fair

Over: CABIN CANYON

8.2 MI ON FDR 504, Dolores, CO

Built 1937 Load: 24.5 t ADT: 27

FDR 688

Fair

Over: WEST DOLORES RIVER

14.5 MI NE OF DOLORES, Dolores, CO

Built 1959 Load: 24.5 t ADT: 15

County Road 129B

Fair

Over: Mid Fk. Little Snake Rvr

0.3 Mi NE of Co Rd 129, Routt, CO

Built 1985 Load: 24.5 t ADT: 23

PARK ENTRANCE ROA

Fair

Over: GREEN RIVER RELIEF

Colorado State HWY. 40 to, Moffat, CO

Built 1960 Load: 24.5 t ADT: 50

US 85 ML

Fair

Over: LONE TREE CREEK

4.3 MI NORTH OF NUNN, Weld, CO

Built 1958 Load: 24.5 t ADT: 4,600

88TH AVENUE

Fair

Over: OBRIAN CANAL

0.5 MI E OF BRIGHTON BLVD, Adams, CO

Built 1970 Load: 24.5 t ADT: 19,093

96TH AVENUE

Fair

Over: EAST BIJOU CREEK

0.8 MI E OF HORROGATE RD, Adams, CO

Built 1965 Load: 24.5 t ADT: 82

W STEWART AVENUE

Fair

Over: EAST SAND CREEK

0.55 MILES EAST OF AIRPOR, El Paso, CO

Built 1977 Load: 24.5 t ADT: 6,398

COUNTY ROAD 30

Fair

Over: BOX ELDER CREEK

2.8 MILES E OF CR 97, Arapahoe, CO

Built 1967 Load: 24.5 t ADT: 1,557

MISSISSIPPI AVENUE

Fair

Over: SIDE CREEK

0.1 MI E OF TOWER RD, Arapahoe, CO

Built 1981 Load: 24.5 t ADT: 13,675

SH 71 ML

Fair

Over: PAWNEE CREEK

6.1 MI N OF JCT SH 14, Weld, CO

Built 1957 Load: 24.5 t ADT: 1,000

Brockway Drive

Fair

Over: Goodhue Ditch

0.1 Mi E of 76th Street, Boulder, CO

Built 1962 Load: 24.5 t ADT: 6,900

Co Rd 54A

Fair

Over: Middle Boulder Creek

Castle Rock Pull Off, Boulder, CO

Built 1917 Load: 24.5 t ADT: 70

HENDERSON ROAD

Fair

Over: BRANTNER DITCH

0.1 M E OF RIVERDALE RD, Adams, CO

Built 1940 Load: 24.5 t ADT: 10,583

CORWINA PARK RD

Fair

Over: BEAR CREEK

CORWINA PARK, Jefferson, CO

Built 1972 Load: 24.5 t ADT: 146

BROADWAY

Fair

Over: HIGHLINE CANAL

0.3 MI S OF ARAPAHOE RD, Arapahoe, CO

Built 1966 Load: 24.5 t ADT: 1,796

BROADWAY

Fair

Over: HIGHLINE CANAL

JUST S OF ARAPAHOE RD, Arapahoe, CO

Built 1958 Load: 24.5 t ADT: 30,424

GOLD CAMP ROAD

Fair

Over: BEAR CREEK

INT. OF BEAR CREEK RD, El Paso, CO

Built 1970 Load: 24.5 t ADT: 570

ARROWSWEST DR

Fair

Over: SOUTH DOUGLAS CREEK

.15 MI S-GARDEN GODS RD, El Paso, CO

Built 1984 Load: 24.5 t ADT: 1,900

Showing 1,101-1,150 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.