US Bridges

Maroon Avenue over Coal Creek

Good

Gunnison County, Colorado · In City of Crested Butte · Structure no. CR.BUTTE-MAROOA

Built
1992
33 years old
Condition
Good
inspected June 2024
Type
Slab
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
768
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Maroon Avenue over Coal Creek is a prestressed concrete slab carrying Maroon Avenue over Coal Creek in Gunnison County, Colorado. It was built in 1992, so it is 33 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 768 vehicles a day, roughly 2% of them trucks, projected to reach 891 by 2042. The structure is 40 ft (12.1 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMaroon Avenue
CrossesCoal Creek
LocationIn City of Crested Butte
RouteCity Street 0
Coordinates38.87066, -106.9865
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadUnknown
Structure length40 ft (12.1 m)
Longest span37 ft (11.3 m)
Deck width32 ft (9.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic768 (2022)
Projected traffic891 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Maroon Avenue over Coal Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is Maroon Avenue over Coal Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2024.

How much traffic does Maroon Avenue over Coal Creek carry?

About 768 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Maroon Avenue over Coal Creek?

The structure is 40 ft (12.1 m) long with a longest span of 37 ft (11.3 m) and a deck 32 ft wide.

Who owns Maroon Avenue over Coal Creek?

It is owned by the Town or Township Highway Agency.