US Bridges

Mn 371 over Mississippi River

Fair

Crow Wing County, Minnesota · 2.4 MI S of JCT TH 210 · Structure no. 18004

Built
1998
27 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
532 ft
4 main spans
Daily traffic
12,842
2021 count
Owner
State
State Highway Agency

About this bridge

Mn 371 over Mississippi River is a prestressed concrete stringer/multi-beam or girder carrying Mn 371 over Mississippi River in Crow Wing County, Minnesota. It was built in 1998, so it is 27 years old, younger than the Minnesota average of 38.5 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 12,842 vehicles a day, roughly 7% of them trucks, projected to reach 11,700 by 2041. The structure is 532 ft (162.2 m) long and 101 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

CarriesMn 371
CrossesMississippi River
Location2.4 MI S of JCT TH 210
RouteState Highway 371
Coordinates46.31311, -94.26762
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to 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 rating74.2 US tons
Inventory rating47.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length532 ft (162.2 m)
Longest span140 ft (42.8 m)
Deck width101 ft (30.7 m)
Roadway width83 ft (25.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,842 (2021)
Projected traffic11,700 by 2041
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed49.7 mi (80 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 Mississippi River built?

It was built in 1998, making it 27 years old in 2025.

What condition is Mn 371 over Mississippi 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 August 2024.

How much traffic does Mn 371 over Mississippi River carry?

About 12,842 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is Mn 371 over Mississippi River?

The structure is 532 ft (162.2 m) long with a longest span of 140 ft (42.8 m) and a deck 101 ft wide.

Who owns Mn 371 over Mississippi River?

It is owned by the State Highway Agency.