US Bridges

I-25 Nbl over I-25 Service Road

Fair

Converse County, Wyoming · Glendo - Douglas · Structure no. AFO

Built
1966
59 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete Continuous
Length
84 ft
3 main spans
Daily traffic
4,101
2024 count
Owner
State
State Highway Agency

About this bridge

I-25 Nbl over I-25 Service Road is a concrete continuous slab carrying I-25 Nbl over I-25 Service Road in Converse 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 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 4,101 vehicles a day, roughly 27% of them trucks, projected to reach 5,741 by 2043. The structure is 84 ft (25.6 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 Nbl
CrossesI-25 Service Road
LocationGlendo - Douglas
RouteInterstate 25
CountyConverse County
StateWyoming
Coordinates42.70963, -105.27197
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length84 ft (25.6 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 traffic4,101 (2024)
Projected traffic5,741 by 2043
Trucks27%
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 Nbl over I-25 Service Road built?

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

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

About 4,101 vehicles per day (2024 count), of which roughly 27% are trucks.

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

The structure is 84 ft (25.6 m) long with a longest span of 35 ft (10.7 m) and a deck 40 ft wide.

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

It is owned by the State Highway Agency.