US Bridges

Sfr 97 over Lost River

Fair

Koochiching County, Minnesota · 7.5 MI E of W CO Line · Structure no. R0277

Built
1981
44 years old
Condition
Fair
inspected October 2024
Type
Culvert
Steel
Length
24 ft
1 main span
Daily traffic
1
2009 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Sfr 97 over Lost River is a steel culvert carrying Sfr 97 over Lost River in Koochiching County, Minnesota. It was built in 1981, so it is 44 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 1 vehicles a day, projected to reach 1 by 2029. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 34.8 mi (56 km).

Location

Open in Google Maps
CarriesSfr 97
CrossesLost River
Location7.5 MI E of W CO Line
RouteState Lands Road 97
CountyKoochiching County
StateMinnesota
Coordinates48.08949, -94.26533
Functional classRural Local

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating28.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1 (+2 approach)
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span9 ft (2.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1 (2009)
Projected traffic1 by 2029
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.8 mi (56 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 97 over Lost River built?

It was built in 1981, making it 44 years old in 2025.

What condition is Sfr 97 over Lost 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 2024.

How much traffic does Sfr 97 over Lost River carry?

About 1 vehicles per day (2009 count).

How long is Sfr 97 over Lost River?

The structure is 24 ft (7.3 m) long with a longest span of 9 ft (2.6 m).

Who owns Sfr 97 over Lost River?

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