US Bridges

CO Cnty RD 15 over Laprele Creek

FairPosted for load

Converse County, Wyoming · 14 Miles S.W. of Douglas · Structure no. DSW

Built
1970
55 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
111 ft
6 main spans
Daily traffic
9
2024 count
Owner
County
County Highway Agency

About this bridge

CO Cnty RD 15 over Laprele Creek is a steel stringer/multi-beam or girder carrying CO Cnty RD 15 over Laprele Creek in Converse County, Wyoming. It was built in 1970, so it is 55 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 9 vehicles a day, roughly 11% of them trucks, projected to reach 13 by 2043. The structure is 111 ft (33.8 m) long and 16 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCO Cnty RD 15
CrossesLaprele Creek
Location14 Miles S.W. of Douglas
RouteCounty Highway 15
CountyConverse County
StateWyoming
Coordinates42.66281, -105.65406
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating20.5 US tons
Inventory rating12.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans6
Design loadUnknown
Structure length111 ft (33.8 m)
Longest span19 ft (5.8 m)
Deck width16 ft (5 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9 (2024)
Projected traffic13 by 2043
Trucks11%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$597,000
NavigationNo navigation control on waterway

Frequently asked questions

When was CO Cnty RD 15 over Laprele Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is CO Cnty RD 15 over Laprele 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 September 2024.

How much traffic does CO Cnty RD 15 over Laprele Creek carry?

About 9 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is CO Cnty RD 15 over Laprele Creek?

The structure is 111 ft (33.8 m) long with a longest span of 19 ft (5.8 m) and a deck 16 ft wide.

Who owns CO Cnty RD 15 over Laprele Creek?

It is owned by the County Highway Agency.