US Bridges

I-25 Sbl over Wyo 90

Fair

Converse County, Wyoming · Douglas - Casper · Structure no. AHA

Built
1967
58 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
116 ft
3 main spans
Daily traffic
4,838
2024 count
Owner
State
State Highway Agency

About this bridge

I-25 Sbl over Wyo 90 is a steel continuous stringer/multi-beam or girder carrying I-25 Sbl over Wyo 90 in Converse County, Wyoming. It was built in 1967, so it is 58 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 4,838 vehicles a day, roughly 17% of them trucks, projected to reach 6,773 by 2043. The structure is 116 ft (35.4 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-25 Sbl
CrossesWyo 90
LocationDouglas - Casper
RouteInterstate 25
CountyConverse County
StateWyoming
Coordinates42.82674, -105.82005
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.
Last inspectionApril 2023
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 alignment8: Equal to present desirable criteria
Operating rating52.6 US tons
Inventory rating31.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length116 ft (35.4 m)
Longest span44 ft (13.4 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,838 (2024)
Projected traffic6,773 by 2043
Trucks17%
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 Wyo 90 built?

It was built in 1967, making it 58 years old in 2025.

What condition is I-25 Sbl over Wyo 90 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 April 2023.

How much traffic does I-25 Sbl over Wyo 90 carry?

About 4,838 vehicles per day (2024 count), of which roughly 17% are trucks.

How long is I-25 Sbl over Wyo 90?

The structure is 116 ft (35.4 m) long with a longest span of 44 ft (13.4 m) and a deck 41 ft wide.

Who owns I-25 Sbl over Wyo 90?

It is owned by the State Highway Agency.