US Bridges

Al Cnty RD 71 over North Laramie River

Good

Albany County, Wyoming · 57 MI NE of Rock River · Structure no. LDL

Built
2000
25 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
61 ft
1 main span
Daily traffic
51
2024 count
Owner
County
County Highway Agency

About this bridge

Al Cnty RD 71 over North Laramie River is a steel stringer/multi-beam or girder carrying Al Cnty RD 71 over North Laramie River in Albany County, Wyoming. It was built in 2000, so it is 25 years old, younger than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 51 vehicles a day, roughly 41% of them trucks, projected to reach 71 by 2043. The structure is 61 ft (18.6 m) long and 26 ft wide. If it were closed, the detour would be 55.9 mi (90 km).

CarriesAl Cnty RD 71
CrossesNorth Laramie River
Location57 MI NE of Rock River
RouteCounty Highway 71
StateWyoming
Coordinates42.18508, -105.40147
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating99 US tons
Inventory rating68 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 25 or greater
Structure length61 ft (18.6 m)
Longest span60 ft (18.3 m)
Deck width26 ft (8 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51 (2024)
Projected traffic71 by 2043
Trucks41%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed55.9 mi (90 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$44,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Al Cnty RD 71 over North Laramie River built?

It was built in 2000, making it 25 years old in 2025.

What condition is Al Cnty RD 71 over North Laramie River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does Al Cnty RD 71 over North Laramie River carry?

About 51 vehicles per day (2024 count), of which roughly 41% are trucks.

How long is Al Cnty RD 71 over North Laramie River?

The structure is 61 ft (18.6 m) long with a longest span of 60 ft (18.3 m) and a deck 26 ft wide.

Who owns Al Cnty RD 71 over North Laramie River?

It is owned by the County Highway Agency.