US Bridges

US 40 Ml over Arroyo Creek

Fair

Cheyenne County, Colorado · 1.6 MI SE of Lincoln-Chey · Structure no. I-24-Q

Built
1937
88 years old, rebuilt 1980
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
206 ft
4 main spans
Daily traffic
3,300
2020 count
Owner
State
State Highway Agency

About this bridge

US 40 Ml over Arroyo Creek is a steel stringer/multi-beam or girder carrying US 40 Ml over Arroyo Creek in Cheyenne County, Colorado. It was built in 1937 and reconstructed in 1980, so it is 88 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 5 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 53% of them trucks, projected to reach 4,356 by 2040. The structure is 206 ft (62.8 m) long and 43 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesUS 40 Ml
CrossesArroyo Creek
Location1.6 MI SE of Lincoln-Chey
RouteU.S. Route 40H
Coordinates38.88743, -103.14337
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating21.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length206 ft (62.8 m)
Longest span51 ft (15.5 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,300 (2020)
Projected traffic4,356 by 2040
Trucks53%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 40 Ml over Arroyo Creek built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1980.

What condition is US 40 Ml over Arroyo 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 February 2025.

How much traffic does US 40 Ml over Arroyo Creek carry?

About 3,300 vehicles per day (2020 count), of which roughly 53% are trucks.

How long is US 40 Ml over Arroyo Creek?

The structure is 206 ft (62.8 m) long with a longest span of 51 ft (15.5 m) and a deck 43 ft wide.

Who owns US 40 Ml over Arroyo Creek?

It is owned by the State Highway Agency.