US Bridges

Mn 62 over Heron Lake Outlet

Fair

Cottonwood County, Minnesota · 8.0 MI W of JCT TH 71 · Structure no. 17003

Built
1978
47 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
146 ft
2 main spans
Daily traffic
736
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 62 over Heron Lake Outlet is a prestressed concrete stringer/multi-beam or girder carrying Mn 62 over Heron Lake Outlet in Cottonwood County, Minnesota. It was built in 1978, so it is 47 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 736 vehicles a day, roughly 26% of them trucks, projected to reach 860 by 2042. The structure is 146 ft (44.5 m) long and 50 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMn 62
CrossesHeron Lake Outlet
Location8.0 MI W of JCT TH 71
RouteState Highway 62
CountyCottonwood County
StateMinnesota
Coordinates43.86256, -95.27616
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.5 US tons
Inventory rating37.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length146 ft (44.5 m)
Longest span73 ft (22.3 m)
Deck width50 ft (15.3 m)
Roadway width47 ft (14.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic736 (2022)
Projected traffic860 by 2042
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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 62 over Heron Lake Outlet built?

It was built in 1978, making it 47 years old in 2025.

What condition is Mn 62 over Heron Lake Outlet 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 August 2024.

How much traffic does Mn 62 over Heron Lake Outlet carry?

About 736 vehicles per day (2022 count), of which roughly 26% are trucks.

How long is Mn 62 over Heron Lake Outlet?

The structure is 146 ft (44.5 m) long with a longest span of 73 ft (22.3 m) and a deck 50 ft wide.

Who owns Mn 62 over Heron Lake Outlet?

It is owned by the State Highway Agency.