US Bridges

I-25 Sbl over South Chugwater HWY

Good

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

Built
1969
56 years old
Condition
Good
inspected April 2024
Type
Tee Beam
Concrete Continuous
Length
134 ft
3 main spans
Daily traffic
3,404
2024 count
Owner
State
State Highway Agency

About this bridge

I-25 Sbl over South Chugwater HWY is a concrete continuous tee beam carrying I-25 Sbl over South Chugwater HWY in Platte County, Wyoming. It was built in 1969, so it is 56 years old, older than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,404 vehicles a day, roughly 23% of them trucks, projected to reach 4,766 by 2043. The structure is 134 ft (40.8 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-25 Sbl
CrossesSouth Chugwater HWY
LocationCheyenne - Chugwater
RouteInterstate 25
StateWyoming
Coordinates41.74654, -104.83092
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.4 US tons
Inventory rating38.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length134 ft (40.8 m)
Longest span52 ft (15.8 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,404 (2024)
Projected traffic4,766 by 2043
Trucks23%
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 South Chugwater HWY built?

It was built in 1969, making it 56 years old in 2025.

What condition is I-25 Sbl over South Chugwater HWY in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does I-25 Sbl over South Chugwater HWY carry?

About 3,404 vehicles per day (2024 count), of which roughly 23% are trucks.

How long is I-25 Sbl over South Chugwater HWY?

The structure is 134 ft (40.8 m) long with a longest span of 52 ft (15.8 m) and a deck 41 ft wide.

Who owns I-25 Sbl over South Chugwater HWY?

It is owned by the State Highway Agency.