US Bridges

Wyo 487 over Sand Creek

Fair

Natrona County, Wyoming · Medicine Bow - Jt Wyo 220 · Structure no. DLP

Built
1981
44 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
86 ft
1 main span
Daily traffic
935
2024 count
Owner
State
State Highway Agency

About this bridge

Wyo 487 over Sand Creek is a prestressed concrete stringer/multi-beam or girder carrying Wyo 487 over Sand Creek in Natrona County, Wyoming. It was built in 1981, so it is 44 years old, younger than the Wyoming average of 48.4 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 935 vehicles a day, roughly 12% of them trucks, projected to reach 1,309 by 2043. The structure is 86 ft (26.2 m) long and 43 ft wide. If it were closed, the detour would be 83.3 mi (134 km).

CarriesWyo 487
CrossesSand Creek
LocationMedicine Bow - Jt Wyo 220
RouteState Highway 487
StateWyoming
Coordinates42.54126, -106.45282
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionMarch 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 geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating33 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length86 ft (26.2 m)
Longest span84 ft (25.6 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic935 (2024)
Projected traffic1,309 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed83.3 mi (134 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Wyo 487 over Sand Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Wyo 487 over Sand 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 March 2024.

How much traffic does Wyo 487 over Sand Creek carry?

About 935 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Wyo 487 over Sand Creek?

The structure is 86 ft (26.2 m) long with a longest span of 84 ft (25.6 m) and a deck 43 ft wide.

Who owns Wyo 487 over Sand Creek?

It is owned by the State Highway Agency.