US Bridges

Mn 61 over Devils Track River

Fair

Cook County, Minnesota · 4.0 MI NE of Gunflint TR · Structure no. 16008

Built
2016
9 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
93 ft
1 main span
Daily traffic
2,850
2018 count
Owner
State
State Highway Agency

About this bridge

Mn 61 over Devils Track River is a prestressed concrete stringer/multi-beam or girder carrying Mn 61 over Devils Track River in Cook County, Minnesota. It was built in 2016, so it is 9 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 2,850 vehicles a day, roughly 7% of them trucks, projected to reach 3,000 by 2038. The structure is 93 ft (28.3 m) long and 65 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesMn 61
CrossesDevils Track River
Location4.0 MI NE of Gunflint TR
RouteState Highway 61
CountyCook County
StateMinnesota
Coordinates47.76994, -90.26109
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating38.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length93 ft (28.3 m)
Longest span91 ft (27.6 m)
Deck width65 ft (19.8 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,850 (2018)
Projected traffic3,000 by 2038
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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 61 over Devils Track River built?

It was built in 2016, making it 9 years old in 2025.

What condition is Mn 61 over Devils Track 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 October 2023.

How much traffic does Mn 61 over Devils Track River carry?

About 2,850 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is Mn 61 over Devils Track River?

The structure is 93 ft (28.3 m) long with a longest span of 91 ft (27.6 m) and a deck 65 ft wide.

Who owns Mn 61 over Devils Track River?

It is owned by the State Highway Agency.