US Bridges

LA Cnty RD 126-1 over Allison Draw

Fair

Laramie County, Wyoming · Cheyenne Streets · Structure no. KPL

Built
1996
29 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete Continuous
Length
37 ft
3 main spans
Daily traffic
1,865
2024 count
Owner
County
County Highway Agency

About this bridge

LA Cnty RD 126-1 over Allison Draw is a concrete continuous culvert carrying LA Cnty RD 126-1 over Allison Draw in Laramie County, Wyoming. It was built in 1996, so it is 29 years old, younger 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 1,865 vehicles a day, roughly 2% of them trucks, projected to reach 2,611 by 2043. The structure is 37 ft (11.4 m) long and 46 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLA Cnty RD 126-1
CrossesAllison Draw
LocationCheyenne Streets
RouteCity Street 4019
StateWyoming
Coordinates41.10889, -104.79003
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64 US tons
Inventory rating38 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length37 ft (11.4 m)
Longest span12 ft (3.7 m)
Deck width46 ft (13.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,865 (2024)
Projected traffic2,611 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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$39,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA Cnty RD 126-1 over Allison Draw built?

It was built in 1996, making it 29 years old in 2025.

What condition is LA Cnty RD 126-1 over Allison Draw 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 December 2023.

How much traffic does LA Cnty RD 126-1 over Allison Draw carry?

About 1,865 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is LA Cnty RD 126-1 over Allison Draw?

The structure is 37 ft (11.4 m) long with a longest span of 12 ft (3.7 m) and a deck 46 ft wide.

Who owns LA Cnty RD 126-1 over Allison Draw?

It is owned by the County Highway Agency.