US Bridges

US 287 Ml over Stonewall Creek

Fair

Larimer County, Colorado · 13.7 Miles North of Teds · Structure no. A-16-C

Built
1963
62 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete Continuous
Length
142 ft
3 main spans
Daily traffic
3,900
2020 count
Owner
State
State Highway Agency

About this bridge

US 287 Ml over Stonewall Creek is a concrete continuous tee beam carrying US 287 Ml over Stonewall Creek in Larimer County, Colorado. It was built in 1963, so it is 62 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 3,900 vehicles a day, roughly 21% of them trucks, projected to reach 4,407 by 2040. The structure is 142 ft (43.2 m) long and 34 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesUS 287 Ml
CrossesStonewall Creek
Location13.7 Miles North of Teds
RouteU.S. Route 287C
Coordinates40.82596, -105.24229
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
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 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 rating68 US tons
Inventory rating40.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length142 ft (43.2 m)
Longest span56 ft (17.1 m)
Deck width34 ft (10.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,900 (2020)
Projected traffic4,407 by 2040
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Stonewall Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is US 287 Ml over Stonewall 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 September 2023.

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

About 3,900 vehicles per day (2020 count), of which roughly 21% are trucks.

How long is US 287 Ml over Stonewall Creek?

The structure is 142 ft (43.2 m) long with a longest span of 56 ft (17.1 m) and a deck 34 ft wide.

Who owns US 287 Ml over Stonewall Creek?

It is owned by the State Highway Agency.