US Bridges

Al Cnty RD 510 over Lil Laramie Riv Overflow

Fair

Albany County, Wyoming · 12 MI NE of Centennial · Structure no. LDT

Built
2001
24 years old
Condition
Fair
inspected November 2023
Type
Culvert
Steel
Length
25 ft
1 main span
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

Al Cnty RD 510 over Lil Laramie Riv Overflow is a steel culvert carrying Al Cnty RD 510 over Lil Laramie Riv Overflow in Albany County, Wyoming. It was built in 2001, so it is 24 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 35 vehicles a day, roughly 11% of them trucks, projected to reach 49 by 2043. The structure is 25 ft (7.5 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesAl Cnty RD 510
CrossesLil Laramie Riv Overflow
Location12 MI NE of Centennial
RouteCounty Highway 510
CountyAlbany County
StateWyoming
Coordinates41.36331, -105.93716
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.3 US tons
Inventory rating42.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length25 ft (7.5 m)
Longest span22 ft (6.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic49 by 2043
Trucks11%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$37,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Al Cnty RD 510 over Lil Laramie Riv Overflow built?

It was built in 2001, making it 24 years old in 2025.

What condition is Al Cnty RD 510 over Lil Laramie Riv Overflow 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 November 2023.

How much traffic does Al Cnty RD 510 over Lil Laramie Riv Overflow carry?

About 35 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Al Cnty RD 510 over Lil Laramie Riv Overflow?

The structure is 25 ft (7.5 m) long with a longest span of 22 ft (6.6 m).

Who owns Al Cnty RD 510 over Lil Laramie Riv Overflow?

It is owned by the County Highway Agency.