Total Bridges
8,965
Public highway bridges in Colorado
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
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)
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.
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 DeficientOver: 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 DeficientOver: NORTH CRESTONE CREEK
IN TOWN OF CRESTONE, Saguache, CO
Built 1991 Load: 2.3 t ADT: 65
CO Rd 32
Structurally DeficientOver: Feeder Ditch
0.28 MI E of Co Rd 75, Las Animas, CO
Built 1970 Load: 2.7 t ADT: 7
POTOMAC STREET
Structurally DeficientOver: OBRIAN CANAL
0.2 MILE NORTH OF SH 2, Adams, CO
Built 1940 Load: 3.8 t ADT: 190
88TH AVENUE
Structurally DeficientOver: KIOWA CREEK
0.1 MI E OF WOLF CREEK RD, Adams, CO
Built 1950 Load: 4.5 t ADT: 532
IRR# CO RD 500
PoorOver: CAT CREEK
NEAR CAMADO, Archuleta, CO
Built 1927 Load: 4.7 t ADT: 36
All Bridges in Colorado
Pearl Parkway
FairOver: S. Goose Creek Drainage
At 49th Street, Boulder, CO
Built 1986 Load: 32.7 t ADT: 10,375
47th Street
FairOver: South Goose Creek
40 Ft N of Pearl Parkway, Boulder, CO
Built 1986 Load: 32.7 t ADT: 4,774
Martin Drive
FairOver: Bear Crk and Bike Path
300 Ft. E of 36th St., Boulder, CO
Built 1995 Load: 32.7 t ADT: 662
Sterling Drive
FairOver: Left Hand Ditch
100 Ft E of 47th Street, Boulder, CO
Built 1975 Load: 32.7 t ADT: 937
Pearl Parkway
FairOver: Left Hand Ditch
500 Ft W of Foothills Pky, Boulder, CO
Built 1981 Load: 32.7 t ADT: 24,744
SB Table Mesa Dr.
FairOver: Bear Creek
Harvard Ln & SB Table, Boulder, CO
Built 1980 Load: 32.7 t ADT: 508
Colorado Avenue
FairOver: Skunk Creek
At 38th Street, Boulder, CO
Built 1979 Load: 32.7 t ADT: 7,343
Glenwood Drive
FairOver: Two Mile Creek
400 Ft W of State Hwy 36, Boulder, CO
Built 1972 Load: 32.7 t ADT: 3,439
Junction Pl
FairOver: Goose Creek
0.1 mi N of Pearl Pkwy, Boulder, CO
Built 2017 Load: 32.7 t ADT: 1,484
Baseline Road
FairOver: Bear Canyon Creek
300 ft E of Meadow Dr, Boulder, CO
Built 1980 Load: 32.7 t ADT: 14,884
MONROE DRIVE
FairOver: EMPSON DITCH
0.1 Mi S of Colorado Ave., Boulder, CO
Built 2020 Load: 32.7 t ADT: 1,175
EISENHOWER DRIVE
FairOver: EMPSON DITCH
0.5 MI S OF ARAPAHOE AVE, Boulder, CO
Built 1972 Load: 32.7 t ADT: 1,860
SH 93 ML
FairOver: SKUNK CREEK / PED PATH
0.1 MI N of 27th WAY, Boulder, CO
Built 2014 Load: 32.7 t ADT: 20,000
SH 119
FairOver: WONDERLAND CRK AND PATH
.5 MI W OF FOOTHILLS PKWY, Boulder, CO
Built 2006 Load: 32.7 t ADT: 26,000
SOUTH BOULDER RD
FairOver: DRAINAGE DITCH AR
IN LAFAYETTE, Boulder, CO
Built 1996 Load: 32.7 t ADT: 37,000
120TH STREET
FairOver: Coal Creek
0.25 M S of S. Boulder Rd, Boulder, CO
Built 1977 Load: 32.7 t ADT: 8,097
15th Avenue
FairOver: Oligarchy Ditch
100 Ft W of Lamplighte Dr, Boulder, CO
Built 1989 Load: 32.7 t ADT: 450
21st Ave Eastbound
FairOver: Oligarchy Ditch
300 Ft. E of Daley Dr., Boulder, CO
Built 1975 Load: 32.7 t ADT: 4,495
3rd Avenue
FairOver: Oligarchy Ditch
At Pace Street, Boulder, CO
Built 1969 Load: 32.7 t ADT: 16,797
Alpine Street
FairOver: Oligarchy Ditch
100 ft N of E 9th Ave., Boulder, CO
Built 1975 Load: 32.7 t ADT: 3,757
Boston Ave
FairOver: Spring Gulch
0.1 mile E. of Martin St., Boulder, CO
Built 2017 Load: 32.7 t ADT: 978
Dry Creek Drive
FairOver: Dry Creek No. 1
0.1 Mi So of Bent Way, Boulder, CO
Built 1991 Load: 32.7 t ADT: 5,490
E 5th Avenue
FairOver: Oligarchy Ditch
0.1 Mi East of Fox St, Boulder, CO
Built 1970 Load: 32.7 t ADT: 1,321
E 9th Avenue
FairOver: Oligarchy Ditch
100 ft E of Alpine Street, Boulder, CO
Built 2004 Load: 32.7 t ADT: 12,630
Fordham Street
FairOver: Dry Creek
0.3 Mi So of Nelson Road, Boulder, CO
Built 1997 Load: 32.7 t ADT: 1,944
Hover Road
FairOver: Oligarchy Ditch
100 Ft S of 20th Street, Boulder, CO
Built 1990 Load: 32.7 t ADT: 25,769
Hover Road
FairOver: Dry Creek No. 1
0.2 Mi S of Nelson Road, Boulder, CO
Built 1985 Load: 32.7 t ADT: 29,369
Pike Road
FairOver: Left Hand Creek
0.2 Mi E of Sunset St, Boulder, CO
Built 1994 Load: 32.7 t ADT: 13,459
Price/Frontage Rds
FairOver: Dry Creek
S. Sunset St and Hwy 11, Boulder, CO
Built 1984 Load: 32.7 t ADT: 7,332
Spencer Street
FairOver: Oligarchy Ditch
50 Ft So of 20th St, Boulder, CO
Built 1975 Load: 32.7 t ADT: 995
Sunset Way
FairOver: Dry Creek
20 Ft SW of Korte Way, Boulder, CO
Built 1996 Load: 32.7 t ADT: 540
McConnell Drive
FairOver: Saint Vrain Creek
50 Ft S of US36 / SH66, Boulder, CO
Built 2006 Load: 32.7 t ADT: 2,031
Briarwood Drive
FairOver: Local Drainage
Just South of Trails Ave, Broomfield, CO
Built 1987 Load: 32.7 t ADT: 290
Midway Blvd
FairOver: Rock Creek Overflow
0.3 mi S of Via Varra, Broomfield, CO
Built 2006 Load: 32.7 t ADT: 4,495
West Sixth Avenue
FairOver: Graves and Dennison Dtch
At Int of Alter & 6th, Broomfield, CO
Built 1985 Load: 32.7 t ADT: 3,667
NWP EB
FairOver: WB Dillon Road
5.59 MI FROM I-25, Broomfield, CO
Built 2002 Load: 32.7 t ADT: 2,500
NWP EB
FairOver: Rock Creek
5.68 MI FROM I-25, Broomfield, CO
Built 2002 Load: 32.7 t ADT: 15,000
NWP WB
FairOver: Rock Creek
5.68 MI FROM I-25, Broomfield, CO
Built 2002 Load: 32.7 t ADT: 12,000
NWP EB
FairOver: EB Dillon Road
6.25 MI FROM I-25, Broomfield, CO
Built 2002 Load: 32.7 t ADT: 6,268
NWP WB
FairOver: EB Dillon Road
6.25 MI FROM I-25, Broomfield, CO
Built 2002 Load: 32.7 t ADT: 12,000
NWP Ramp
FairOver: EB Dillon Road
6.29 MI FROM I-25, Broomfield, CO
Built 2002 Load: 32.7 t ADT: 1,100
CEDAR STREET
FairOver: COTTONWOOD CREEK
.1 MI E of SH 24, Chaffee, CO
Built 1988 Load: 32.7 t ADT: 117
PLEASANT AVENUE
FairOver: COTTONWOOD CREEK
.1 MI N OF PRINCETON AVE, Chaffee, CO
Built 1988 Load: 32.7 t ADT: 977
RAILROAD STREET
FairOver: COTTONWOOD CREEK
.2 MI S OF CR 306, Chaffee, CO
Built 1979 Load: 32.7 t ADT: 1,729
COUNTY ROAD 102
FairOver: ARKANSAS RIVER
2.2 MI SE OF SALIDA, Chaffee, CO
Built 1984 Load: 32.7 t ADT: 293
COUNTY ROAD 105
FairOver: UNNAMED CREEK
1.9 MI SE OF SALIDA, Chaffee, CO
Built 1945 Load: 32.7 t ADT: 9
COUNTY ROAD 105
FairOver: SOUTH ARKANSAS RIVER
1.5 MI SE OF SALIDA, Chaffee, CO
Built 1945 Load: 32.7 t ADT: 277
COUNTY ROAD 302
FairOver: BIG SANDY DRAW
0.75 MI SE OF SH 285, Chaffee, CO
Built 1940 Load: 32.7 t ADT: 44
COUNTY ROAD 361
FairOver: COTTONWOOD CREEK
.2 MI N OF CR 306, Chaffee, CO
Built 2011 Load: 32.7 t ADT: 837
US 24 ML
FairOver: PINE CREEK
5.7 MI S.E. OF GRANITE, Chaffee, CO
Built 1937 Load: 32.7 t ADT: 2,700
Showing 3,251-3,300 of 8,965 bridges
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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |