US Bridges

I-25 Sbl over Pl CR 147 (collins Road)

Fair

Platte County, Wyoming · Glendo - Douglas · Structure no. CZH

Built
1974
51 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
137 ft
3 main spans
Daily traffic
3,379
2024 count
Owner
State
State Highway Agency

About this bridge

I-25 Sbl over Pl CR 147 (collins Road) is a steel continuous stringer/multi-beam or girder carrying I-25 Sbl over Pl CR 147 (collins Road) in Platte County, Wyoming. It was built in 1974, so it is 51 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 3,379 vehicles a day, roughly 26% of them trucks, projected to reach 4,731 by 2043. The structure is 137 ft (41.8 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-25 Sbl
CrossesPl CR 147 (collins Road)
LocationGlendo - Douglas
RouteInterstate 25
CountyPlatte County
StateWyoming
Coordinates42.54566, -105.03553
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.9 US tons
Inventory rating34.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length137 ft (41.8 m)
Longest span59 ft (17.9 m)
Deck width45 ft (13.6 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,379 (2024)
Projected traffic4,731 by 2043
Trucks26%
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 Pl CR 147 (collins Road) built?

It was built in 1974, making it 51 years old in 2025.

What condition is I-25 Sbl over Pl CR 147 (collins 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 2023.

How much traffic does I-25 Sbl over Pl CR 147 (collins Road) carry?

About 3,379 vehicles per day (2024 count), of which roughly 26% are trucks.

How long is I-25 Sbl over Pl CR 147 (collins Road)?

The structure is 137 ft (41.8 m) long with a longest span of 59 ft (17.9 m) and a deck 45 ft wide.

Who owns I-25 Sbl over Pl CR 147 (collins Road)?

It is owned by the State Highway Agency.