US Bridges

Al Cnty RD 713 over North Laramie River

Fair

Albany County, Wyoming · 35 MI NE of Rock River · Structure no. DOB

Built
1970
55 years old
Condition
Fair
inspected November 2023
Type
Culvert
Steel
Length
49 ft
4 main spans
Daily traffic
19
2024 count
Owner
County
County Highway Agency

About this bridge

Al Cnty RD 713 over North Laramie River is a steel culvert carrying Al Cnty RD 713 over North Laramie River in Albany 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 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 19 vehicles a day, roughly 16% of them trucks, projected to reach 27 by 2043. The structure is 49 ft (14.9 m) long. If it were closed, the detour would be 47.2 mi (76 km).

CarriesAl Cnty RD 713
CrossesNorth Laramie River
Location35 MI NE of Rock River
RouteCounty Highway 713
StateWyoming
Coordinates42.11682, -105.69784
Functional classRural Minor Collector

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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
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 adequacy8: 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 typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadUnknown
Structure length49 ft (14.9 m)
Longest span9 ft (2.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19 (2024)
Projected traffic27 by 2043
Trucks16%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed47.2 mi (76 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$36,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Al Cnty RD 713 over North Laramie River built?

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

What condition is Al Cnty RD 713 over North Laramie River 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 713 over North Laramie River carry?

About 19 vehicles per day (2024 count), of which roughly 16% are trucks.

How long is Al Cnty RD 713 over North Laramie River?

The structure is 49 ft (14.9 m) long with a longest span of 9 ft (2.8 m).

Who owns Al Cnty RD 713 over North Laramie River?

It is owned by the County Highway Agency.