US Bridges

Entrance Road (fut over Laramie River

Good

Goshen County, Wyoming · 0.6 Miles West of Fort LA · Structure no. 1420003P0000000

Built
1976
49 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
195 ft
3 main spans
Daily traffic
50
2010 count
Owner
Federal
National Park Service

About this bridge

Entrance Road (fut over Laramie River is a prestressed concrete continuous stringer/multi-beam or girder carrying Entrance Road (fut over Laramie River in Goshen County, Wyoming. It was built in 1976, so it is 49 years old, older than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, roughly 1% of them trucks, projected to reach 125 by 2030. The structure is 195 ft (59.4 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesEntrance Road (fut
CrossesLaramie River
Location0.6 Miles West of Fort LA
RouteFederal Lands Road 0
StateWyoming
Coordinates42.20079, -104.53581
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating38 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length195 ft (59.4 m)
Longest span75 ft (22.9 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2010)
Projected traffic125 by 2030
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNational Park Service
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$14,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Entrance Road (fut over Laramie River built?

It was built in 1976, making it 49 years old in 2025.

What condition is Entrance Road (fut over Laramie River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does Entrance Road (fut over Laramie River carry?

About 50 vehicles per day (2010 count), of which roughly 1% are trucks.

How long is Entrance Road (fut over Laramie River?

The structure is 195 ft (59.4 m) long with a longest span of 75 ft (22.9 m) and a deck 33 ft wide.

Who owns Entrance Road (fut over Laramie River?

It is owned by the National Park Service and maintained by the State Highway Agency.