US Bridges

I-90 Ebl over Wyo 342

Poor

Sheridan County, Wyoming · Sheridan - Buffalo · Structure no. BCD

Built
1968
57 years old
Condition
Poor
inspected August 2023
Type
Tee Beam
Concrete Continuous
Length
104 ft
3 main spans
Daily traffic
3,624
2024 count
Owner
State
State Highway Agency

About this bridge

I-90 Ebl over Wyo 342 is a concrete continuous tee beam carrying I-90 Ebl over Wyo 342 in Sheridan County, Wyoming. It was built in 1968, so it is 57 years old, older than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 3,624 vehicles a day, roughly 18% of them trucks, projected to reach 5,074 by 2043. The structure is 104 ft (31.7 m) long and 41 ft wide.

CarriesI-90 Ebl
CrossesWyo 342
LocationSheridan - Buffalo
RouteInterstate 90
StateWyoming
Coordinates44.66561, -106.88027
Functional classRural Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.5 US tons
Inventory rating37 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length104 ft (31.7 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 traffic3,624 (2024)
Projected traffic5,074 by 2043
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$800,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-90 Ebl over Wyo 342 built?

It was built in 1968, making it 57 years old in 2025.

What condition is I-90 Ebl over Wyo 342 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.

How much traffic does I-90 Ebl over Wyo 342 carry?

About 3,624 vehicles per day (2024 count), of which roughly 18% are trucks.

How long is I-90 Ebl over Wyo 342?

The structure is 104 ft (31.7 m) long with a longest span of 44 ft (13.4 m) and a deck 41 ft wide.

Who owns I-90 Ebl over Wyo 342?

It is owned by the State Highway Agency.