US Bridges

Mn 61 over Stewart River

Good

Lake County, Minnesota · 2.2 MI NE of JCT Csah 2 · Structure no. 3589

Built
1922
103 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete
Length
74 ft
1 main span
Daily traffic
6,474
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 61 over Stewart River is a concrete culvert carrying Mn 61 over Stewart River in Lake County, Minnesota. It was built in 1922, so it is 103 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 6,474 vehicles a day, roughly 7% of them trucks, projected to reach 6,000 by 2042. The structure is 74 ft (22.7 m) long. If it were closed, the detour would be 11.2 mi (18 km).

CarriesMn 61
CrossesStewart River
Location2.2 MI NE of JCT Csah 2
RouteState Highway 61
Coordinates47.04796, -91.63061
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 inspectionAugust 2024
Inspection intervalevery 12 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 rating62.8 US tons
Inventory rating47.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 15
Structure length74 ft (22.7 m)
Longest span71 ft (21.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,474 (2022)
Projected traffic6,000 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed11.2 mi (18 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 statusListed on the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$262 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 61 over Stewart River built?

It was built in 1922, making it 103 years old in 2025.

What condition is Mn 61 over Stewart 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 August 2024.

How much traffic does Mn 61 over Stewart River carry?

About 6,474 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Mn 61 over Stewart River?

The structure is 74 ft (22.7 m) long with a longest span of 71 ft (21.5 m).

Who owns Mn 61 over Stewart River?

It is owned by the State Highway Agency.