US Bridges

Sfr 78 over South Branch Rapid River

Good

Lake of the Woods County, Minnesota · 2.5 MI N of CO Line · Structure no. 39520

Built
2001
24 years old
Condition
Good
inspected October 2022
Type
Culvert
Concrete
Length
38 ft
1 main span
Daily traffic
10
1986 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Sfr 78 over South Branch Rapid River is a concrete culvert carrying Sfr 78 over South Branch Rapid River in Lake of the Woods County, Minnesota. It was built in 2001, so it is 24 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10 vehicles a day, projected to reach 10 by 2029. The structure is 38 ft (11.6 m) long. If it were closed, the detour would be 123 mi (198 km).

CarriesSfr 78
CrossesSouth Branch Rapid River
Location2.5 MI N of CO Line
RouteState Lands Road 78
Coordinates48.40247, -94.95039
Functional classRural Local

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 protection7 GoodSome minor problems.
Culvert8 Very GoodNo problems noted.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length38 ft (11.6 m)
Longest span36 ft (11 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (1986)
Projected traffic10 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123 mi (198 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation 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 Sfr 78 over South Branch Rapid River built?

It was built in 2001, making it 24 years old in 2025.

What condition is Sfr 78 over South Branch Rapid 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 2022.

How much traffic does Sfr 78 over South Branch Rapid River carry?

About 10 vehicles per day (1986 count).

How long is Sfr 78 over South Branch Rapid River?

The structure is 38 ft (11.6 m) long with a longest span of 36 ft (11 m).

Who owns Sfr 78 over South Branch Rapid River?

It is owned by the State Park, Forest, or Reservation Agency.