US Bridges

US 287 Ml over Willow Creek

Fair

Prowers County, Colorado · 1.8 MI S of Lamar · Structure no. L-26-I

Built
1947
78 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
124 ft
3 main spans
Daily traffic
3,300
2020 count
Owner
State
State Highway Agency

About this bridge

US 287 Ml over Willow Creek is a steel stringer/multi-beam or girder carrying US 287 Ml over Willow Creek in Prowers County, Colorado. It was built in 1947, so it is 78 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 52% of them trucks, projected to reach 4,488 by 2040. The structure is 124 ft (37.8 m) long and 36 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS 287 Ml
CrossesWillow Creek
Location1.8 MI S of Lamar
RouteU.S. Route 287A
Coordinates38.0372, -102.61499
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.4 US tons
Inventory rating33.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length124 ft (37.8 m)
Longest span39 ft (12 m)
Deck width36 ft (10.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,300 (2020)
Projected traffic4,488 by 2040
Trucks52%
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 287 Ml over Willow Creek built?

It was built in 1947, making it 78 years old in 2025.

What condition is US 287 Ml over Willow 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 August 2024.

How much traffic does US 287 Ml over Willow Creek carry?

About 3,300 vehicles per day (2020 count), of which roughly 52% are trucks.

How long is US 287 Ml over Willow Creek?

The structure is 124 ft (37.8 m) long with a longest span of 39 ft (12 m) and a deck 36 ft wide.

Who owns US 287 Ml over Willow Creek?

It is owned by the State Highway Agency.