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

COUNTY ROAD 5100

Good

Over: WEST WISE CREEK

Just NW of AMBER RD, Montrose, CO

Built 2018 Load: 76.1 t ADT: 73

HAVANA STREET

Good

Over: HAPPY CANYON CREEK

1.3 MI S OF RIDGEGATE, Douglas, CO

Built 2009 Load: 76.7 t ADT: 1,145

SH 65 ML

Good

Over: ATWELL GULCH

Just S. of CR 45 1/2, Mesa, CO

Built 1973 Load: 76.9 t ADT: 2,600

FOREST ROAD 240

Good

Over: HOT CREEK

0.5 MI S OF CR 255, Conejos, CO

Built 2011 Load: 77.8 t ADT: 55

County Road 18

Good

Over: Local Drainage

0.4 Mi W of CR 11, Weld, CO

Built 2015 Load: 77.8 t ADT: 3,947

County Road 29

Good

Over: Home Supply Ditch

0.5 Mi N of US Hwy 34, Larimer, CO

Built 1981 Load: 78.2 t ADT: 397

TOWER ROAD

Good

Over: SECOND CREEK

0.25 MI N OF 81ST AVE, Adams, CO

Built 2018 Load: 78.4 t ADT: 28,933

COUNTY ROAD 6E

Good

Over: RIO GRANDE RIVER OVERFLO

0.5 MI N of CR 1S, Rio Grande, CO

Built 1985 Load: 78.6 t ADT: 1,174

County Road 129

Good

Over: Willow Creek

22.1 Mi N of US Hwy 40, Routt, CO

Built 1993 Load: 78.6 t ADT: 1,281

I 25 ML NBND

Good

Over: SMITH CREEK

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

Built 1958 Load: 78.9 t ADT: 46,000

COUNTY RD 79.0

Good

Over: TRIB. OF SALADO CREEK

2.8 MI N OF CR 64.8, Las Animas, CO

Built 1997 Load: 78.9 t ADT: 2

SH 24 ML

Good

Over: GAME CROSSING

2.4 MI NE OF DIVIDE, Teller, CO

Built 2003 Load: 79.1 t ADT: 18,000

I 70 ML EBND

Good

Over: RAMP TO I 70 WBND, DRAW

GRIZZLY CREEK INTERCHANGE, Garfield, CO

Built 1986 Load: 79.5 t ADT: 8,500

SH 125 ML

Good

Over: MICHIGAN RIVER

N. EDGE OF WALDEN, Jackson, CO

Built 2012 Load: 79.7 t ADT: 2,400

DELAWARE STREET

Good

Over: LITTLES CREEK

AT WEST STERNE PKWY, Arapahoe, CO

Built 1999 Load: 80.4 t ADT: 1,723

10TH AVENUE

Good

Over: LAKEWOOD GULCH

0.1 MI EAST OF PERRY ST, Denver, CO

Built 1999 Load: 80.4 t ADT: 5,422

County Road 80

Good

Over: Larimer and Weld Canal

0.6 Mi E of US Hwy 85, Weld, CO

Built 2022 Load: 80.4 t ADT: 229

I 70 ML WBND

Good

Over: RAMP TO I 70 WBND,DRAW

GRIZZLY CK INTERCHANGE, Garfield, CO

Built 1986 Load: 80.5 t ADT: 8,500

SECURITY DRIVE

Good

Over: LOCAL DRAINAGE

.1 MI WEST OF SABLE BLVD, Arapahoe, CO

Built 1996 Load: 80.6 t ADT: 652

SH 72 ML

Good

Over: COAL CREEK

5.6 MI W OF JCT SH 93, Jefferson, CO

Built 2020 Load: 80.7 t ADT: 5,100

SH 72 ML

Good

Over: COAL CREEK

4.6 MI W OF JCT SH 93, Jefferson, CO

Built 2020 Load: 80.7 t ADT: 5,100

SH 72 ML

Good

Over: COAL CREEK

3.4 MI W OF JCT SH 93, Jefferson, CO

Built 2020 Load: 80.7 t ADT: 5,100

Peoria Street

Good

Over: Burlington Ditch

1.2 MI E JCT 85/112th AVE, Adams, CO

Built 2022 Load: 81.0 t ADT: 3,552

US 285 ML

Good

Over: DRAW

5.6 MI N. OF PONCHA SPRGS, Chaffee, CO

Built 1967 Load: 81.0 t ADT: 5,500

Gateway Road

Good

Over: Foothills Trail

W of 30th St intersection, El Paso, CO

Built 2022 Load: 81.0 t ADT: 1,900

US 50 ML

Good

Over: DRAW

4 MI EAST OF COTOPAXI, Fremont, CO

Built 2015 Load: 81.0 t ADT: 3,300

Iris Ave

Good

Over: Elmers Two Mile Ditch

0.15 Mi W of US36/28th St, Boulder, CO

Built 2005 Load: 81.6 t ADT: 21,112

County Road 21

Good

Over: Riverside Canal

0.8 Mi N of Co Rd W, Morgan, CO

Built 2009 Load: 82.3 t ADT: 41

SH 96 ML

Good

Over: DRAW

JACKSON HILL EAST, Pueblo, CO

Built 1993 Load: 82.4 t ADT: 970

COUNTY ROAD 58A

Good

Over: WEST PLUM CREEK TRIB.

.2 MI SW OF CO RD 105, Douglas, CO

Built 1998 Load: 82.6 t ADT: 61

COUNTY ROAD 54

Good

Over: NORTH FORK LADDER CREEK

.1 MI S OF US 40, Cheyenne, CO

Built 1989 Load: 83.2 t ADT: 49

Wagonwheel Gap Rd

Good

Over: Fourmile Creek

0.5 Mi W of Lee Hill Dr, Boulder, CO

Built 2019 Load: 83.3 t ADT: 460

SH 14 ML

Good

Over: BOX ELDER CREEK

0.4 MI E OF JCT I 25, Larimer, CO

Built 1985 Load: 83.6 t ADT: 19,000

SH 92 ML

Good

Over: CURRANT CREEK

8 MI NE OF DELTA, Delta, CO

Built 2009 Load: 84.2 t ADT: 4,500

I25 RAMP

Good

Over: SPEER ENTRANCE

I25 & SPEER, Denver, CO

Built 2010 Load: 84.2 t ADT: 217,000

US 385 ML

Good

Over: BIG TIMBER CREEK

9.8 MI N OF JCT US 40, Cheyenne, CO

Built 1996 Load: 84.3 t ADT: 730

SH 67 ML

Good

Over: NEWLIN CREEK

5 MI S. OF FLORENCE, Fremont, CO

Built 2000 Load: 84.5 t ADT: 1,300

SH 52 ML

Good

Over: DRAW

6.6 MI E OF JCT SH 79, Weld, CO

Built 1961 Load: 85.0 t ADT: 650

MCKAY ROAD

Good

Over: GRANGE HALL CREEK

.35 MI NORTH OF 104TH AVE, Adams, CO

Built 2005 Load: 85.9 t ADT: 14,424

Wagonwheel Gap Rd

Good

Over: Four Mile Creek

0.5 Mi E of Bow Mnt. Rd, Boulder, CO

Built 2019 Load: 85.9 t ADT: 407

Poncha Springs Ln

Good

Over: South Arkansas River

0.1 Mi S OF US 50, Chaffee, CO

Built 2014 Load: 86.2 t ADT: 475

SH 83 RAMP

Good

Over: Multi-use Path

0.1 MI SW ARAPAHOE ROAD, Arapahoe, CO

Built 2015 Load: 86.5 t ADT: 41,000

US 287 ML

Good

Over: DRAW

22 MI N OF OKLA SL, Baca, CO

Built 1980 Load: 86.5 t ADT: 2,900

JACKPOT DRIVE

Good

Over: WEST SAND CREEK TRIB.

JUST W OF CHARLOTTE PKWY, El Paso, CO

Built 1996 Load: 86.9 t ADT: 1,714

RAMP TO I 25 NBND

Good

Over: BOX ELDER CRK OVERFLOW R

IN FORT COLLINS, Larimer, CO

Built 1985 Load: 87.0 t ADT: 894

AIRPORT ROAD

Good

Over: SPRING CREEK

0.15 MI W OF ACADEMY BLVD, El Paso, CO

Built 2022 Load: 87.5 t ADT: 10,017

Harmony Rd

Good

Over: Timnath Reservoir Outlet

20ft E of Three Bell Pkwy, Larimer, CO

Built 2016 Load: 87.5 t ADT: 24,815

SH 113 ML

Good

Over: DRAW

11.4 MI NORTH OF JCT SH 1, Logan, CO

Built 2019 Load: 87.5 t ADT: 1,100

US 24 ML

Good

Over: SHIELDS GULCH

5.5 MI NE OF JCT US 285, Chaffee, CO

Built 1937 Load: 87.8 t ADT: 6,700

County Road 17

Good

Over: Dry Creek

0.5 Mi N of Co Rd 4E, Larimer, CO

Built 1997 Load: 87.8 t ADT: 2,409

Showing 8,401-8,450 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.