US Bridges

US 50 Ml over Anderson Arroyo

Fair

Otero County, Colorado · In LA Junta · Structure no. M-22-M

Built
1961
64 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete
Length
140 ft
3 main spans
Daily traffic
12,000
2020 count
Owner
State
State Highway Agency

About this bridge

US 50 Ml over Anderson Arroyo is a concrete tee beam carrying US 50 Ml over Anderson Arroyo in Otero County, Colorado. It was built in 1961, so it is 64 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 12,000 vehicles a day, roughly 6% of them trucks, projected to reach 13,440 by 2040. The structure is 140 ft (42.7 m) long and 92 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS 50 Ml
CrossesAnderson Arroyo
LocationIn LA Junta
RouteU.S. Route 50B
Coordinates37.98779, -103.55338
Functional classUrban Other Principal Arterial

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 protection7 GoodSome minor problems.
Last inspectionAugust 2024
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 geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.7 US tons
Inventory rating36.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckOther
Main spans3
Design loadHS 20
Structure length140 ft (42.7 m)
Longest span45 ft (13.7 m)
Deck width92 ft (28 m)
Roadway width74 ft (22.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,000 (2020)
Projected traffic13,440 by 2040
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed0.6 mi (1 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 Anderson Arroyo built?

It was built in 1961, making it 64 years old in 2025.

What condition is US 50 Ml over Anderson Arroyo 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 August 2024.

How much traffic does US 50 Ml over Anderson Arroyo carry?

About 12,000 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is US 50 Ml over Anderson Arroyo?

The structure is 140 ft (42.7 m) long with a longest span of 45 ft (13.7 m) and a deck 92 ft wide.

Who owns US 50 Ml over Anderson Arroyo?

It is owned by the State Highway Agency.