US Bridges

M 61 over Little Pine River

Fair

Crow Wing County, Minnesota · 0.4 MI E of JCT Csah 1 · Structure no. 18515

Built
1986
39 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
32 ft
1 main span
Daily traffic
10
1986 count
Owner
City
City or Municipal Highway Agency

About this bridge

M 61 over Little Pine River is a concrete culvert carrying M 61 over Little Pine River in Crow Wing County, Minnesota. It was built in 1986, so it is 39 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 10 vehicles a day, projected to reach 10 by 2029. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 98.8 mi (159 km).

CarriesM 61
CrossesLittle Pine River
Location0.4 MI E of JCT Csah 1
RouteCity Street 61
Coordinates46.73928, -93.93584
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 protection8 Very GoodNo problems noted.
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 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 closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 M 61 over Little Pine River built?

It was built in 1986, making it 39 years old in 2025.

What condition is M 61 over Little Pine 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 M 61 over Little Pine River carry?

About 10 vehicles per day (1986 count).

How long is M 61 over Little Pine River?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m).

Who owns M 61 over Little Pine River?

It is owned by the City or Municipal Highway Agency.