US Bridges

I-25 Sbl over I-25 Service Road

Fair

Platte County, Wyoming · Wheatland - Glendo · Structure no. AER

Built
1960
65 years old, rebuilt 1990
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
162 ft
3 main spans
Daily traffic
3,530
2024 count
Owner
State
State Highway Agency

About this bridge

I-25 Sbl over I-25 Service Road is a steel continuous stringer/multi-beam or girder carrying I-25 Sbl over I-25 Service Road in Platte County, Wyoming. It was built in 1960 and reconstructed in 1990, so it is 65 years old, older 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 3,530 vehicles a day, roughly 29% of them trucks, projected to reach 4,942 by 2043. The structure is 162 ft (49.5 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-25 Sbl
CrossesI-25 Service Road
LocationWheatland - Glendo
RouteInterstate 25
CountyPlatte County
StateWyoming
Coordinates42.28577, -105.04881
Functional classRural Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.2 US tons
Inventory rating44.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length162 ft (49.5 m)
Longest span60 ft (18.3 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,530 (2024)
Projected traffic4,942 by 2043
Trucks29%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-25 Sbl over I-25 Service Road built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1990.

What condition is I-25 Sbl over I-25 Service Road 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 I-25 Sbl over I-25 Service Road carry?

About 3,530 vehicles per day (2024 count), of which roughly 29% are trucks.

How long is I-25 Sbl over I-25 Service Road?

The structure is 162 ft (49.5 m) long with a longest span of 60 ft (18.3 m) and a deck 43 ft wide.

Who owns I-25 Sbl over I-25 Service Road?

It is owned by the State Highway Agency.