US Bridges

US 50 Ml over Arkansas River

Fair

Pueblo County, Colorado · Between Avondale & N. Avo · Structure no. L-19-H

Built
1955
70 years old, rebuilt 1986
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
406 ft
6 main spans
Daily traffic
4,100
2020 count
Owner
State
State Highway Agency

About this bridge

US 50 Ml over Arkansas River is a steel continuous stringer/multi-beam or girder carrying US 50 Ml over Arkansas River in Pueblo County, Colorado. It was built in 1955 and reconstructed in 1986, so it is 70 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 4,100 vehicles a day, roughly 13% of them trucks, projected to reach 4,387 by 2040. The structure is 406 ft (123.8 m) long and 34 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS 50 Ml
CrossesArkansas River
LocationBetween Avondale & N. Avo
RouteU.S. Route 50B
Coordinates38.24527, -104.34476
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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.9 US tons
Inventory rating51.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length406 ft (123.8 m)
Longest span76 ft (23.2 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,100 (2020)
Projected traffic4,387 by 2040
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 Arkansas River built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1986.

What condition is US 50 Ml over Arkansas River 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 April 2024.

How much traffic does US 50 Ml over Arkansas River carry?

About 4,100 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is US 50 Ml over Arkansas River?

The structure is 406 ft (123.8 m) long with a longest span of 76 ft (23.2 m) and a deck 34 ft wide.

Who owns US 50 Ml over Arkansas River?

It is owned by the State Highway Agency.