US Bridges

US 71 over Leaf River

Good

Wadena County, Minnesota · 3.3 MI N of JCT TH 10 · Structure no. 80004

Built
1997
28 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete Continuous
Length
166 ft
4 main spans
Daily traffic
3,467
2022 count
Owner
State
State Highway Agency

About this bridge

US 71 over Leaf River is a concrete continuous slab carrying US 71 over Leaf River in Wadena County, Minnesota. It was built in 1997, so it is 28 years old, younger than the Minnesota average of 38.5 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 3,467 vehicles a day, roughly 14% of them trucks, projected to reach 4,200 by 2042. The structure is 166 ft (50.6 m) long and 51 ft wide. If it were closed, the detour would be 70.2 mi (113 km).

CarriesUS 71
CrossesLeaf River
Location3.3 MI N of JCT TH 10
RouteU.S. Route 71
Coordinates46.4755, -95.09316
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating90.2 US tons
Inventory rating54 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length166 ft (50.6 m)
Longest span45 ft (13.7 m)
Deck width51 ft (15.6 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,467 (2022)
Projected traffic4,200 by 2042
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed70.2 mi (113 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 71 over Leaf River built?

It was built in 1997, making it 28 years old in 2025.

What condition is US 71 over Leaf 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 August 2023.

How much traffic does US 71 over Leaf River carry?

About 3,467 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is US 71 over Leaf River?

The structure is 166 ft (50.6 m) long with a longest span of 45 ft (13.7 m) and a deck 51 ft wide.

Who owns US 71 over Leaf River?

It is owned by the State Highway Agency.