US Bridges

I-25 Service Road over Chugwater Creek

FairPosted for load

Platte County, Wyoming · Cheyenne - Chugwater · Structure no. ACX

Built
1955
70 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete Continuous
Length
109 ft
4 main spans
Daily traffic
87
2024 count
Owner
State
State Highway Agency

About this bridge

I-25 Service Road over Chugwater Creek is a concrete continuous slab carrying I-25 Service Road over Chugwater Creek in Platte County, Wyoming. It was built in 1955, so it is 70 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. Its operating status is: posted for load restriction.

It carries about 87 vehicles a day, roughly 13% of them trucks, projected to reach 122 by 2043. The structure is 109 ft (33.1 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-25 Service Road
CrossesChugwater Creek
LocationCheyenne - Chugwater
CountyPlatte County
StateWyoming
Coordinates41.7483, -104.82926
Functional classRural Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.1 US tons
Inventory rating30.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length109 ft (33.1 m)
Longest span29 ft (8.8 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic87 (2024)
Projected traffic122 by 2043
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 Service Road over Chugwater Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is I-25 Service Road over Chugwater 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 April 2024.

How much traffic does I-25 Service Road over Chugwater Creek carry?

About 87 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is I-25 Service Road over Chugwater Creek?

The structure is 109 ft (33.1 m) long with a longest span of 29 ft (8.8 m) and a deck 35 ft wide.

Who owns I-25 Service Road over Chugwater Creek?

It is owned by the State Highway Agency.