State profile · Below national median SD

Colorado bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Colorado — drawn straight from the FHWA National Bridge Inventory.

8,965
Public bridges
32.0%
Good condition
4.3%
Poor condition
4.3%
Structurally deficient

Total Bridges

8,965

Public highway bridges in Colorado

Good Condition

32.0%

2,865 bridges rated 7-9

-18.0pp vs 50% benchmark

Poor Condition

4.3%

387 bridges rated 0-4

Structurally Deficient

4.3%

387 bridges flagged for repair priority

-2.7pp vs national avg 7.0%

Colorado vs national bridge condition

Colorado — Good condition share 32.0%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Colorado — Structurally deficient share 14.4%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Bridge inventory deck-condition mix — Colorado (FHWA NBI)

Colorado31.95761293920803%54.210819854991634%GoodFairPoorStructurally Deficient
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 on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Colorado on the same metric.

47

Tennessee

3.97% top marginal rate
Structure
Progressive
Burden @ $100K
$20,426

24

Maryland

4.27% top marginal rate
Structure
Progressive
Burden @ $100K
$5,527
Selected

08

Colorado

4.32% top marginal rate
Structure
Progressive
Burden @ $100K
$8,965

41

Oregon

4.46% top marginal rate
Structure
Progressive
Burden @ $100K
$8,310

39

Ohio

4.54% top marginal rate
Structure
Progressive
Burden @ $100K
$26,753

Bridges Needing Most Attention in Colorado

Six lowest-condition bridges in Colorado, ranked by composite NBI rating. Each is inspected at least every 24 months.

County Road 59

Structurally Deficient

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

Structurally Deficient

Over: NORTH CRESTONE CREEK

IN TOWN OF CRESTONE, Saguache, CO

Built 1991 Load: 2.3 t ADT: 65

CO Rd 32

Structurally Deficient

Over: Feeder Ditch

0.28 MI E of Co Rd 75, Las Animas, CO

Built 1970 Load: 2.7 t ADT: 7

POTOMAC STREET

Structurally Deficient

Over: OBRIAN CANAL

0.2 MILE NORTH OF SH 2, Adams, CO

Built 1940 Load: 3.8 t ADT: 190

88TH AVENUE

Structurally Deficient

Over: KIOWA CREEK

0.1 MI E OF WOLF CREEK RD, Adams, CO

Built 1950 Load: 4.5 t ADT: 532

IRR# CO RD 500

Poor

Over: CAT CREEK

NEAR CAMADO, Archuleta, CO

Built 1927 Load: 4.7 t ADT: 36

All Bridges in Colorado

SH 257 ML

Good

Over: LARIMER COUNTY CANAL

0.5 MI SOUTH OF SH 14, Weld, CO

Built 1984 Load: 40.8 t ADT: 5,100

County Road 80.5

Good

Over: Larimer County Canal

0.7 Mi E of St Hwy 257, Weld, CO

Built 1991 Load: 40.8 t ADT: 169

SH 94 ML

Good

Over: DRAW

4.3 MI W OF JCT US 40, Lincoln, CO

Built 1968 Load: 40.9 t ADT: 440

County Road 48.5

Good

Over: Lewis Creek

30 Ft. E of Co Rd 59, Logan, CO

Built 2000 Load: 40.9 t ADT: 4

US 287 ML

Good

Over: LONE ROCK DRAW

24 MILES NORTH OF OKLA S., Baca, CO

Built 1966 Load: 41.0 t ADT: 2,900

RALSTON ROAD

Good

Over: RAILROAD

0.5 MI W OF SHERIDAN, Jefferson, CO

Built 1996 Load: 41.0 t ADT: 8,515

County Road 9.5

Good

Over: St Vrain River

1 MI N of SH 119, Weld, CO

Built 1999 Load: 41.0 t ADT: 11,064

120TH AVE WBND

Good

Over: S. PLATTE RIVER

1.5 MI W OF US85, Adams, CO

Built 2005 Load: 41.1 t ADT: 8,991

I 76 ML

Good

Over: YORK STREET

1.33 Mi E of JCT I25, Adams, CO

Built 2023 Load: 41.1 t ADT: 84,000

COUNTY LANE 13

Good

Over: BOB CREEK

.6 MI NORTH OF SH 96, Crowley, CO

Built 1989 Load: 41.1 t ADT: 31

I70 WBND ML

Good

Over: BRIGHTON BLVD

1.2 MI E OF I25, Denver, CO

Built 2021 Load: 41.1 t ADT: 83,000

2720: PINEY RIVER

Good

Over: PINEY RIVER

1.1 mi from State Bridge, Eagle, CO

Built 2011 Load: 41.1 t ADT: 25

MCINTYRE STREET

Good

Over: VAN BIBBER CREEK

1.65 MI N OF 44TH AVE, Jefferson, CO

Built 2019 Load: 41.1 t ADT: 17,056

US 24 ML

Good

Over: EAST FORK ARKANSAS RIVER

1.1 Mi W of SH91, Lake, CO

Built 2008 Load: 41.1 t ADT: 2,700

I 25 ML NBND

Good

Over: WINDSOR RES,CANAL DITCH

1.6 MI N OF JCT SH 14, Larimer, CO

Built 1950 Load: 41.1 t ADT: 19,000

US 350 ML

Good

Over: SEASONAL WASH

0.4 MILES NE OF TIMPAS, Otero, CO

Built 2023 Load: 41.1 t ADT: 440

SH 2 ML

Good

Over: SECOND CREEK

0.1 MI S OF 120TH AVE, Adams, CO

Built 1999 Load: 41.2 t ADT: 16,174

COUNTY ROAD 15

Good

Over: FT. LYON CANAL

2.6 MI N OF SH 50, Bent, CO

Built 1995 Load: 41.2 t ADT: 24

US 40 ML

Good

Over: DRAW

4.8 MI SE OF LINCOLN-CHYN, Cheyenne, CO

Built 1959 Load: 41.2 t ADT: 3,800

I 70 ML EBND

Good

Over: HILLSIDE

E. OF GRIZZLY CRK INT, Garfield, CO

Built 1986 Load: 41.2 t ADT: 8,500

CO RD 12

Good

Over: ANTHRACITE CREEK

6.1 MI E OF SH 133, Gunnison, CO

Built 1993 Load: 41.2 t ADT: 439

YALE AVENUE

Good

Over: LOCAL DRAINAGE

0.1 MI W OF HOYT COURT, Jefferson, CO

Built 1982 Load: 41.2 t ADT: 1,889

Park Drive

Good

Over: Westerdall Lake Outlet

0.2 Mi E of Boise Avenue, Larimer, CO

Built 1993 Load: 41.2 t ADT: 633

I 25 ML AND FR RDS

Good

Over: LOWER BOULDER DITCH

4.4 MI SO OF JCT SH 119, Weld, CO

Built 2000 Load: 41.2 t ADT: 91,000

COUNTY LANE 12

Good

Over: COLORADO CANAL

.7 MI N OF RD H, Crowley, CO

Built 1994 Load: 41.4 t ADT: 4

RAMP TO US 40 ML

Good

Over: RAMP TOPOGRAPHY R

I 25 NB RAMP E TO COLFAX, Denver, CO

Built 1991 Load: 41.4 t ADT: 49,000

95 Street (CR 19)

Good

Over: Boulder Creek

1.7 Mi S of CR28, Boulder, CO

Built 2010 Load: 41.5 t ADT: 7,778

Flagstaff Rd CR56

Good

Over: Hillside Slide

1.0 Mi W of Baseline Rd, Boulder, CO

Built 1996 Load: 41.5 t ADT: 2,463

US 40 ML

Good

Over: CHERRY CREEK

COLFAX / DOWNTOWN DENVER, Denver, CO

Built 1999 Load: 41.5 t ADT: 40,000

SB I-25 Offramp

Good

Over: LRT

I-25/Evans in Denver, Denver, CO

Built 2006 Load: 41.5 t ADT: 101,000

SB I-25 Ramp

Good

Over: LRT

I-25 N of Belleview, Denver, CO

Built 2005 Load: 41.5 t ADT: 111,500

I 25 ML

Good

Over: UPPER LAKE GULCH RD

1.0 MI N OF LARKSPUR, Douglas, CO

Built 2021 Load: 41.5 t ADT: 66,000

RIVA RIDGE DR

Good

Over: SULPHUR GULCH

0.2 MILES S OF MAIN ST, Douglas, CO

Built 1988 Load: 41.5 t ADT: 1,247

GRANDVIEW AVE.

Good

Over: OIL CREEK DITCH

WEST OF MACKENZIE AVE, Fremont, CO

Built 1996 Load: 41.5 t ADT: 1,730

County Road 204

Good

Over: Clear Creek Ditch

2.3 Mi No of Co Road 202, Garfield, CO

Built 1992 Load: 41.5 t ADT: 426

SIMMS STREET

Good

Over: WEAVER CREEK

0.1 MI SOUTH OF QUINCY, Jefferson, CO

Built 2000 Load: 41.5 t ADT: 16,238

US 287 ML

Good

Over: Lone Wolf Canal

15.1 MI N OF US 50, Kiowa, CO

Built 2003 Load: 41.5 t ADT: 3,100

I25 ML SBND

Good

Over: SH56 ML

4.9 MI E OF JCT US 287, Weld, CO

Built 2022 Load: 41.5 t ADT: 7,400

CR 56.6/Hopi Trail

Good

Over: Greeley Loveland Ditch

0.4 MI W OF CO RD 15, Weld, CO

Built 2002 Load: 41.5 t ADT: 151

County Road 58

Good

Over: South Platte River

0.6 Mi E of Hemlock St, Weld, CO

Built 2016 Load: 41.5 t ADT: 8,581

I-25 SB On Ramp

Good

Over: LRT

SB On-ramp at Emerson St, Denver, CO

Built 2005 Load: 41.6 t ADT: 98,000

COUNTY ROAD 8

Good

Over: MINERAL CREEK

0.2 MI W OF US 550, San Juan, CO

Built 1993 Load: 41.6 t ADT: 199

COUNTY ROAD 16R

Good

Over: DISAPPOINTMENT CREEK

1.5 MI S OF SH 141, San Miguel, CO

Built 1992 Load: 41.6 t ADT: 1

6TH STREET

Good

Over: BLUE RIVER

AT INTERSECTION WITH SH 9, Summit, CO

Built 1981 Load: 41.6 t ADT: 2,091

Hopi Trail

Good

Over: Greeley Loveland Ditch

0.6 Mi North of Cr 56, Weld, CO

Built 2002 Load: 41.6 t ADT: 167

Ramp A

Good

Over: Cherry Creek

5.13 MI FROM I 25, Douglas, CO

Built 1990 Load: 41.7 t ADT: 8,200

US 50 ML

Good

Over: CLAY CREEK

4.7 MI EAST OF LAMAR, Prowers, CO

Built 1966 Load: 41.7 t ADT: 2,600

Tenth Street

Good

Over: White River

500 Ft So of Water St, Rio Blanco, CO

Built 1998 Load: 41.7 t ADT: 1,443

80TH AVENUE

Good

Over: LOST CREEK TRIBUTARY

0.1 MI E OF CONVERSE RD, Adams, CO

Built 1993 Load: 41.8 t ADT: 32

COUNTY ROAD 50

Good

Over: W BIJOU CREEK

.3 MI WEST OF CO RD 181, Arapahoe, CO

Built 1992 Load: 41.8 t ADT: 43

Showing 7,651-7,700 of 8,965 bridges

Related

All states → | National rankings → | Understanding conditions → | SD bridges explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.

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). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.

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.