US Bridges

CO Cnty RD 29 over Laprele Creek

Poor

Converse County, Wyoming · 10 Miles N.W. of Douglas · Structure no. FRM

Built
1992
33 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
53 ft
1 main span
Daily traffic
147
2024 count
Owner
County
County Highway Agency

About this bridge

CO Cnty RD 29 over Laprele Creek is a steel stringer/multi-beam or girder carrying CO Cnty RD 29 over Laprele Creek in Converse County, Wyoming. It was built in 1992, so it is 33 years old, younger 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 147 vehicles a day, roughly 10% of them trucks, projected to reach 206 by 2043. The structure is 53 ft (16.2 m) long and 24 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesCO Cnty RD 29
CrossesLaprele Creek
Location10 Miles N.W. of Douglas
RouteCounty Highway 29
StateWyoming
Coordinates42.83272, -105.4905
Functional classRural Minor Collector

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating33 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length53 ft (16.2 m)
Longest span50 ft (15.2 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic147 (2024)
Projected traffic206 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$41,000
NavigationNo navigation control on waterway

Frequently asked questions

When was CO Cnty RD 29 over Laprele Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is CO Cnty RD 29 over Laprele Creek 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 September 2024.

How much traffic does CO Cnty RD 29 over Laprele Creek carry?

About 147 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is CO Cnty RD 29 over Laprele Creek?

The structure is 53 ft (16.2 m) long with a longest span of 50 ft (15.2 m) and a deck 24 ft wide.

Who owns CO Cnty RD 29 over Laprele Creek?

It is owned by the County Highway Agency.