US Bridges

Mn 371 over Csah 46

Good

Morrison County, Minnesota · 2.8 MI N of JCT TH 10 · Structure no. 49037

Built
2005
20 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
199 ft
3 main spans
Daily traffic
5,000
2017 count
Owner
State
State Highway Agency

About this bridge

Mn 371 over Csah 46 is a prestressed concrete stringer/multi-beam or girder carrying Mn 371 over Csah 46 in Morrison County, Minnesota. It was built in 2005, so it is 20 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 5,000 vehicles a day, roughly 8% of them trucks, projected to reach 5,000 by 2039. The structure is 199 ft (60.6 m) long and 45 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

CarriesMn 371
CrossesCsah 46
Location2.8 MI N of JCT TH 10
RouteState Highway 371
Coordinates46.0266, -94.33563
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.1 US tons
Inventory rating37.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length199 ft (60.6 m)
Longest span88 ft (26.7 m)
Deck width45 ft (13.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2017)
Projected traffic5,000 by 2039
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed19.3 mi (31 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkSTRAHNET connector

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$1,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mn 371 over Csah 46 built?

It was built in 2005, making it 20 years old in 2025.

What condition is Mn 371 over Csah 46 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 July 2024.

How much traffic does Mn 371 over Csah 46 carry?

About 5,000 vehicles per day (2017 count), of which roughly 8% are trucks.

How long is Mn 371 over Csah 46?

The structure is 199 ft (60.6 m) long with a longest span of 88 ft (26.7 m) and a deck 45 ft wide.

Who owns Mn 371 over Csah 46?

It is owned by the State Highway Agency.