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
COUNTY ROAD 23
FairOver: SAND ARROYO
3.5 MI S OF CR W, Baca, CO
Built 1935 Load: 32.7 t ADT: 14
COUNTY ROAD 23
FairOver: TRIB. OF SAND ARROYO
2 MI N OF CR U, Baca, CO
Built 1935 Load: 32.7 t ADT: 10
COUNTY ROAD 23
FairOver: TRIB. OF SAND ARROYO
.8 MI S OF CR W, Baca, CO
Built 1935 Load: 32.7 t ADT: 6
COUNTY ROAD 28
FairOver: TRIB N.FORK CIMARRON RVR
JUST N OF CR M, Baca, CO
Built 1938 Load: 32.7 t ADT: 24
COUNTY ROAD 34.5
FairOver: BEAR CREEK
2.2 MI N OF SH160, Baca, CO
Built 1970 Load: 32.7 t ADT: 43
COUNTY ROAD 44
FairOver: SAND ARROYO
0.1 MI N OF CR AA, Baca, CO
Built 1970 Load: 32.7 t ADT: 54
COUNTY ROAD 55
FairOver: N. FORK CIMARRON RIVER
1 MI N OF CR T, Baca, CO
Built 1935 Load: 32.7 t ADT: 20
COUNTY ROAD 8
FairOver: SOUTH FORK SAND ARROYO
.2 Mi E OF CR 3, Baca, CO
Built 1935 Load: 32.7 t ADT: 13
COUNTY ROAD C
FairOver: UNNAMED CREEK
JUST W OF CR 36, Baca, CO
Built 1935 Load: 32.7 t ADT: 22
COUNTY ROAD CC
FairOver: SOLDIER CREEK
.2 MI E OF CR 2, Baca, CO
Built 1938 Load: 32.7 t ADT: 48
COUNTY ROAD G
FairOver: TRIB. OF CIMARRON RIVER
.9 MI E OF CR 39, Baca, CO
Built 1935 Load: 32.7 t ADT: 3
COUNTY ROAD J
FairOver: UNNAMED CREEK
1.5 MI E 13 OF CR 13, Baca, CO
Built 1939 Load: 32.7 t ADT: 25
COUNTY ROAD M
FairOver: TRIB. OF E. CARRIZO CRK
4.2 MI E OF CR 0, Baca, CO
Built 1935 Load: 32.7 t ADT: 19
COUNTY ROAD XX
FairOver: TRIB. OF TWO BUTTES CRK
1.3 MI E OF CR 33, Baca, CO
Built 1965 Load: 32.7 t
US 160 ML
FairOver: DRAW
1.3 MI W OF KANSAS, Baca, CO
Built 1935 Load: 32.7 t ADT: 200
US 160 ML
FairOver: DRAW
0.2 MI W OF KANSAS, Baca, CO
Built 1935 Load: 32.7 t ADT: 200
COUNTY ROAD 10
FairOver: TRIB. JOHNNY BRANCH CRK
11.5 MI S OF CR N, Bent, CO
Built 1960 Load: 32.7 t ADT: 9
COUNTY ROAD 10
FairOver: MUDDY CREEK
JUST SOUTH OF CR 9.5, Bent, CO
Built 1960 Load: 32.7 t ADT: 14
COUNTY ROAD T
FairOver: RULE CREEK
2.7 MI E OF SH 101, Bent, CO
Built 1965 Load: 32.7 t ADT: 5
WILD BASIN ROAD
FairOver: NORTH ST. VRAIN CREEK
HWY 7 TO WILD BASIN TRAIL, Boulder, CO
Built 1982 Load: 32.7 t ADT: 75
WILD BASIN ROAD
FairOver: NORTH ST. VRAIN CREEK
2.1 MILES FROM PARK BOUND, Boulder, CO
Built 1982 Load: 32.7 t ADT: 75
Sixth St (CR 130)
FairOver: Middle Boulder Creek
.1 Mi S CR 130Eldorado Rd, Boulder, CO
Built 2005 Load: 32.7 t ADT: 106
Nelson Rd (Cr 20)
FairOver: Boulder Feeder Ditch
1.0 Mi W of Co Rd 39, Boulder, CO
Built 1950 Load: 32.7 t ADT: 2,692
N. 75th St (Cr 25)
FairOver: Boulder Creek
0.1 Mi S of Jay Road, Boulder, CO
Built 1978 Load: 32.7 t ADT: 8,907
County Road 33
FairOver: Left Hand Creek
0.3 M N of Oxford Rd (26), Boulder, CO
Built 1980 Load: 32.7 t ADT: 4,344
Niwot Road (Cr 34)
FairOver: Dry Creek
0.7 Mi E of St Hwy 119, Boulder, CO
Built 1985 Load: 32.7 t ADT: 5,021
Kenosha Rd (CR 38)
FairOver: Coal Creek
0.2 Mi W of Co Rd 901, Boulder, CO
Built 1965 Load: 32.7 t ADT: 2,305
Cherryvale Road
FairOver: Davidson Ditch
0.5 Mi N of St Hwy 170, Boulder, CO
Built 1973 Load: 32.7 t ADT: 3,123
Woodland Rd (CR4)
FairOver: Highland Ditch
1.3 Mi E of 75th Street, Boulder, CO
Built 1976 Load: 32.7 t ADT: 1,163
Independence Ave.
FairOver: Boulder & Whiterock Dtch
0.4 Mi E of St Hwy 119, Boulder, CO
Built 1973 Load: 32.7 t ADT: 574
Niwot Meadow Farm
FairOver: Dry Creek No 2
0.2 Mi E of 83rd St, Boulder, CO
Built 2005 Load: 32.7 t ADT: 102
N 41st St (Cr 59)
FairOver: Left Hand Creek
325 Ft S of Co Rd 26, Boulder, CO
Built 1960 Load: 32.7 t ADT: 226
South Boulder Road
FairOver: Viele Channel (Ditch)
0.6 Mi E of US Hwy 36, Boulder, CO
Built 1975 Load: 32.7 t ADT: 9,270
S Boulder Road
FairOver: South Boulder Creek
0.4 Mi E of US Hwy 36, Boulder, CO
Built 1986 Load: 32.7 t ADT: 9,270
CR 62 (Empire Dr)
FairOver: Coal Creek
0.7 M E of St Hwy 42, Boulder, CO
Built 1935 Load: 32.7 t ADT: 1,080
County Road 9
FairOver: Boulder Creek
0.3 Mi N of Co Rd 42, Boulder, CO
Built 1960 Load: 32.7 t ADT: 59
County Road 901
FairOver: Boulder Creek
0.3 Mi N of St Hwy 52, Boulder, CO
Built 1976 Load: 32.7 t ADT: 6,549
Boulder Hills Dr
FairOver: Boulder Feeder Ditch
50 Ft E of Stirrup Lane, Boulder, CO
Built 1980 Load: 32.7 t ADT: 209
Strath Street
FairOver: Left Hand Creek
0.2 Mi N of Niwot Rd, Boulder, CO
Built 1970 Load: 32.7 t ADT: 92
Twin Lakes Road
FairOver: BLDR and Whiterock Ditch
0.2 Mi E of 63rd Street, Boulder, CO
Built 1975 Load: 32.7 t ADT: 1,018
Mc Sorley Lane
FairOver: South Boulder Creek
0.1 Mi W of Cherryvale Rd, Boulder, CO
Built 1970 Load: 32.7 t ADT: 272
Spring Drive
FairOver: Davidson Ditch
0.7 Mi S of S. Boulder Rd, Boulder, CO
Built 1970 Load: 32.7 t ADT: 1,022
Folsom Street
FairOver: Boulder Whiterock Ditch
20 Ft N of Pearl Street, Boulder, CO
Built 1970 Load: 32.7 t ADT: 13,574
30th Street
FairOver: Empson Ditch
0.59 Mi N of Baseline Rd, Boulder, CO
Built 1963 Load: 32.7 t ADT: 16,733
30th Street
FairOver: Boulder Creek
0.79 Mi N. of Baseline Rd, Boulder, CO
Built 1963 Load: 32.7 t ADT: 33,663
Juniper Avenue
FairOver: Elmers Two Mile Ditch
200 Ft E of 26th Street, Boulder, CO
Built 1965 Load: 32.7 t ADT: 666
Kalmia Avenue
FairOver: Elmers Two Mile Ditch
0.1 Mi W of Folsom Street, Boulder, CO
Built 1973 Load: 32.7 t ADT: 551
Moorhead Avenue
FairOver: Skunk Creek
0.1 Mi E of 27th Way, Boulder, CO
Built 1970 Load: 32.7 t ADT: 4,313
Moorhead Avenue
FairOver: Bear Creek: Bike Path
0.4 Mi NW of Table Mesa D, Boulder, CO
Built 1995 Load: 32.7 t ADT: 2,461
Kingsridge Blvd.
FairOver: Wonderland Creek
0.2 Mi N of Valmont Drive, Boulder, CO
Built 1988 Load: 32.7 t ADT: 812
Showing 3,201-3,250 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 |