US Bridges

I-25 Sbl over Laramie River Road

Fair

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

Built
1966
59 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
89 ft
3 main spans
Daily traffic
3,568
2024 count
Owner
State
State Highway Agency

About this bridge

I-25 Sbl over Laramie River Road is a concrete continuous slab carrying I-25 Sbl over Laramie River Road in Platte County, Wyoming. It was built in 1966, so it is 59 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 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 3,568 vehicles a day, roughly 26% of them trucks, projected to reach 4,995 by 2043. The structure is 89 ft (27.1 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-25 Sbl
CrossesLaramie River Road
LocationWheatland - Glendo
RouteInterstate 25
CountyPlatte County
StateWyoming
Coordinates42.12447, -104.99413
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
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.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.8 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length89 ft (27.1 m)
Longest span35 ft (10.7 m)
Deck width40 ft (12.3 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,568 (2024)
Projected traffic4,995 by 2043
Trucks26%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
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 Laramie River Road built?

It was built in 1966, making it 59 years old in 2025.

What condition is I-25 Sbl over Laramie River 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 January 2025.

How much traffic does I-25 Sbl over Laramie River Road carry?

About 3,568 vehicles per day (2024 count), of which roughly 26% are trucks.

How long is I-25 Sbl over Laramie River Road?

The structure is 89 ft (27.1 m) long with a longest span of 35 ft (10.7 m) and a deck 40 ft wide.

Who owns I-25 Sbl over Laramie River Road?

It is owned by the State Highway Agency.