US Bridges

Mn 61 over Encampment River

Good

Lake County, Minnesota · 6.5 MI NE of JCT Csah 2 · Structure no. 5916

Built
1941
84 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
37 ft
1 main span
Daily traffic
4,763
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 61 over Encampment River is a concrete culvert carrying Mn 61 over Encampment River in Lake County, Minnesota. It was built in 1941, so it is 84 years old, older 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 4,763 vehicles a day, roughly 6% of them trucks, projected to reach 4,500 by 2042. The structure is 37 ft (11.2 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesMn 61
CrossesEncampment River
Location6.5 MI NE of JCT Csah 2
RouteState Highway 61
Coordinates47.0935, -91.57567
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating109.8 US tons
Inventory rating79.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length37 ft (11.2 m)
Longest span32 ft (9.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,763 (2022)
Projected traffic4,500 by 2042
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Encampment River built?

It was built in 1941, making it 84 years old in 2025.

What condition is Mn 61 over Encampment 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 October 2023.

How much traffic does Mn 61 over Encampment River carry?

About 4,763 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Mn 61 over Encampment River?

The structure is 37 ft (11.2 m) long with a longest span of 32 ft (9.7 m).

Who owns Mn 61 over Encampment River?

It is owned by the State Highway Agency.