US Bridges

US 50 Ml over Blue Creek

Good

Gunnison County, Colorado · 11.2 MI E of Cimarron · Structure no. K-07-F

Built
1936
89 years old, rebuilt 1986
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
123 ft
2 main spans
Daily traffic
2,800
2020 count
Owner
State
State Highway Agency

About this bridge

US 50 Ml over Blue Creek is a steel continuous stringer/multi-beam or girder carrying US 50 Ml over Blue Creek in Gunnison County, Colorado. It was built in 1936 and reconstructed in 1986, so it is 89 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,800 vehicles a day, roughly 12% of them trucks, projected to reach 2,968 by 2040. The structure is 123 ft (37.6 m) long and 42 ft wide. If it were closed, the detour would be 62.1 mi (100 km).

CarriesUS 50 Ml
CrossesBlue Creek
Location11.2 MI E of Cimarron
RouteU.S. Route 50A
Coordinates38.40464, -107.4081
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54 US tons
Inventory rating32.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length123 ft (37.6 m)
Longest span60 ft (18.2 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,800 (2020)
Projected traffic2,968 by 2040
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed62.1 mi (100 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 50 Ml over Blue Creek built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1986.

What condition is US 50 Ml over Blue 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 April 2024.

How much traffic does US 50 Ml over Blue Creek carry?

About 2,800 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is US 50 Ml over Blue Creek?

The structure is 123 ft (37.6 m) long with a longest span of 60 ft (18.2 m) and a deck 42 ft wide.

Who owns US 50 Ml over Blue Creek?

It is owned by the State Highway Agency.