US Bridges

Mn 371 over Norway Brook

Fair

Cass County, Minnesota · 0.6 MI SE of Pine River · Structure no. 6506

Built
1950
75 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete
Length
41 ft
3 main spans
Daily traffic
6,346
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 371 over Norway Brook is a concrete culvert carrying Mn 371 over Norway Brook in Cass County, Minnesota. It was built in 1950, so it is 75 years old, older 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 6,346 vehicles a day, roughly 10% of them trucks, projected to reach 7,500 by 2042. The structure is 41 ft (12.4 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesMn 371
CrossesNorway Brook
Location0.6 MI SE of Pine River
RouteState Highway 371
CountyCass County
StateMinnesota
Coordinates46.7121, -94.3944
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating32.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length41 ft (12.4 m)
Longest span11 ft (3.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 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$54 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 371 over Norway Brook built?

It was built in 1950, making it 75 years old in 2025.

What condition is Mn 371 over Norway Brook 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 September 2023.

How much traffic does Mn 371 over Norway Brook carry?

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

How long is Mn 371 over Norway Brook?

The structure is 41 ft (12.4 m) long with a longest span of 11 ft (3.5 m).

Who owns Mn 371 over Norway Brook?

It is owned by the State Highway Agency.