US Bridges

I-25 Nbl over Elkhorn Creek

Fair

Platte County, Wyoming · Glendo - Douglas · Structure no. CZK

Built
1973
52 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
531 ft
4 main spans
Daily traffic
3,563
2024 count
Owner
State
State Highway Agency

About this bridge

I-25 Nbl over Elkhorn Creek is a steel continuous stringer/multi-beam or girder carrying I-25 Nbl over Elkhorn Creek in Platte County, Wyoming. It was built in 1973, so it is 52 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 3,563 vehicles a day, roughly 24% of them trucks, projected to reach 4,988 by 2043. The structure is 531 ft (161.8 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-25 Nbl
CrossesElkhorn Creek
LocationGlendo - Douglas
RouteInterstate 25
CountyPlatte County
StateWyoming
Coordinates42.57579, -105.07336
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.1 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length531 ft (161.8 m)
Longest span145 ft (44.1 m)
Deck width45 ft (13.6 m)
Roadway width42 ft (12.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic3,563 (2024)
Projected traffic4,988 by 2043
Trucks24%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-25 Nbl over Elkhorn Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is I-25 Nbl over Elkhorn Creek 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 2023.

How much traffic does I-25 Nbl over Elkhorn Creek carry?

About 3,563 vehicles per day (2024 count), of which roughly 24% are trucks.

How long is I-25 Nbl over Elkhorn Creek?

The structure is 531 ft (161.8 m) long with a longest span of 145 ft (44.1 m) and a deck 45 ft wide.

Who owns I-25 Nbl over Elkhorn Creek?

It is owned by the State Highway Agency.