US Bridges

US 50 Ml over Amity Canal

Fair

Prowers County, Colorado · 5.6 MI W of Lamar · Structure no. L-26-BR

Built
1982
43 years old
Condition
Fair
inspected February 2022
Type
Tee Beam
Prestressed Concrete
Length
62 ft
1 main span
Daily traffic
7,800
2020 count
Owner
State
State Highway Agency

About this bridge

US 50 Ml over Amity Canal is a prestressed concrete tee beam carrying US 50 Ml over Amity Canal in Prowers County, Colorado. It was built in 1982, so it is 43 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 7,800 vehicles a day, roughly 24% of them trucks, projected to reach 8,892 by 2040. The structure is 62 ft (18.9 m) long and 115 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesUS 50 Ml
CrossesAmity Canal
Location5.6 MI W of Lamar
RouteU.S. Route 50B
Coordinates38.11298, -102.70554
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating37 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length62 ft (18.9 m)
Longest span57 ft (17.4 m)
Deck width115 ft (35 m)
Roadway width112 ft (34.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,800 (2020)
Projected traffic8,892 by 2040
Trucks24%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Amity Canal built?

It was built in 1982, making it 43 years old in 2025.

What condition is US 50 Ml over Amity Canal 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 February 2022.

How much traffic does US 50 Ml over Amity Canal carry?

About 7,800 vehicles per day (2020 count), of which roughly 24% are trucks.

How long is US 50 Ml over Amity Canal?

The structure is 62 ft (18.9 m) long with a longest span of 57 ft (17.4 m) and a deck 115 ft wide.

Who owns US 50 Ml over Amity Canal?

It is owned by the State Highway Agency.