US Bridges

Skyline Drive over BNSF Railway

Fair

Platte County, Wyoming · Guernsey State Park · Structure no. LAO

Built
1998
27 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
184 ft
1 main span
Daily traffic
199
2024 count
Owner
Railroad
Railroad

About this bridge

Skyline Drive over BNSF Railway is a steel stringer/multi-beam or girder carrying Skyline Drive over BNSF Railway in Platte County, Wyoming. It was built in 1998, so it is 27 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 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 199 vehicles a day, roughly 29% of them trucks, projected to reach 279 by 2043. The structure is 184 ft (56.1 m) long and 45 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSkyline Drive
CrossesBNSF Railway
LocationGuernsey State Park
RouteState Lands Road GSP-1
CountyPlatte County
StateWyoming
Coordinates42.30046, -104.78963
Functional classRural Minor Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating101 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length184 ft (56.1 m)
Longest span180 ft (54.9 m)
Deck width45 ft (13.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic199 (2024)
Projected traffic279 by 2043
Trucks29%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerRailroad
Maintained byRailroad
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$33,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Skyline Drive over BNSF Railway built?

It was built in 1998, making it 27 years old in 2025.

What condition is Skyline Drive over BNSF Railway 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 November 2024.

How much traffic does Skyline Drive over BNSF Railway carry?

About 199 vehicles per day (2024 count), of which roughly 29% are trucks.

How long is Skyline Drive over BNSF Railway?

The structure is 184 ft (56.1 m) long with a longest span of 180 ft (54.9 m) and a deck 45 ft wide.

Who owns Skyline Drive over BNSF Railway?

It is owned by the Railroad.