US Bridges

I-25 Nbl over US 26

Fair

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

Built
1966
59 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
193 ft
3 main spans
Daily traffic
3,743
2024 count
Owner
State
State Highway Agency

About this bridge

I-25 Nbl over US 26 is a concrete continuous slab carrying I-25 Nbl over US 26 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 3,743 vehicles a day, roughly 23% of them trucks, projected to reach 5,240 by 2043. The structure is 193 ft (58.7 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-25 Nbl
CrossesUS 26
LocationWheatland - Glendo
RouteInterstate 25
CountyPlatte County
StateWyoming
Coordinates42.23076, -105.02255
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.7 US tons
Inventory rating46.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length193 ft (58.7 m)
Longest span74 ft (22.6 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,743 (2024)
Projected traffic5,240 by 2043
Trucks23%
Lanes on structure2
Traffic directionOne-way traffic
CarriesThird level (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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$525,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-25 Nbl over US 26 built?

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

What condition is I-25 Nbl over US 26 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 Nbl over US 26 carry?

About 3,743 vehicles per day (2024 count), of which roughly 23% are trucks.

How long is I-25 Nbl over US 26?

The structure is 193 ft (58.7 m) long with a longest span of 74 ft (22.6 m) and a deck 33 ft wide.

Who owns I-25 Nbl over US 26?

It is owned by the State Highway Agency.