US Bridges

US 50 Ml over Oak Creek

Fair

Fremont County, Colorado · In Cotopaxi · Structure no. K-14-B

Built
1936
89 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
83 ft
2 main spans
Daily traffic
3,300
2020 count
Owner
State
State Highway Agency

About this bridge

US 50 Ml over Oak Creek is a steel stringer/multi-beam or girder carrying US 50 Ml over Oak Creek in Fremont County, Colorado. It was built in 1936, 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 3,300 vehicles a day, roughly 12% of them trucks, projected to reach 3,399 by 2040. The structure is 83 ft (25.4 m) long and 33 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesUS 50 Ml
CrossesOak Creek
LocationIn Cotopaxi
RouteU.S. Route 50A
Coordinates38.37083, -105.6878
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.2 US tons
Inventory rating41.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length83 ft (25.4 m)
Longest span39 ft (12 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,300 (2020)
Projected traffic3,399 by 2040
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 proposedDeck replacement with only incidental widening
Estimated improvement cost$150,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 50 Ml over Oak Creek built?

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

What condition is US 50 Ml over Oak Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2025.

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

About 3,300 vehicles per day (2020 count), of which roughly 12% are trucks.

How long is US 50 Ml over Oak Creek?

The structure is 83 ft (25.4 m) long with a longest span of 39 ft (12 m) and a deck 33 ft wide.

Who owns US 50 Ml over Oak Creek?

It is owned by the State Highway Agency.