US Bridges

Mn 371 over S Fk Pine River

Good

Cass County, Minnesota · 2.0 MI SE of Pine River · Structure no. 11112

Built
1992
33 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
139 ft
3 main spans
Daily traffic
6,346
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 371 over S Fk Pine River is a prestressed concrete stringer/multi-beam or girder carrying Mn 371 over S Fk Pine River in Cass County, Minnesota. It was built in 1992, so it is 33 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 6,346 vehicles a day, roughly 10% of them trucks, projected to reach 7,500 by 2042. The structure is 139 ft (42.4 m) long and 50 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesMn 371
CrossesS Fk Pine River
Location2.0 MI SE of Pine River
RouteState Highway 371
Coordinates46.69406, -94.37012
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 protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.1 US tons
Inventory rating40.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length139 ft (42.4 m)
Longest span45 ft (13.8 m)
Deck width50 ft (15.3 m)
Roadway width47 ft (14.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,346 (2022)
Projected traffic7,500 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 Mn 371 over S Fk Pine River built?

It was built in 1992, making it 33 years old in 2025.

What condition is Mn 371 over S Fk Pine 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 Mn 371 over S Fk Pine River carry?

About 6,346 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Mn 371 over S Fk Pine River?

The structure is 139 ft (42.4 m) long with a longest span of 45 ft (13.8 m) and a deck 50 ft wide.

Who owns Mn 371 over S Fk Pine River?

It is owned by the State Highway Agency.