US Bridges

Mn 68 over Redwood R Diversion Chan

Fair

Lyon County, Minnesota · 0.6 MI NW of JCT TH 59 · Structure no. 42002

Built
1962
63 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
140 ft
3 main spans
Daily traffic
3,810
2021 count
Owner
State
State Highway Agency

About this bridge

Mn 68 over Redwood R Diversion Chan is a prestressed concrete stringer/multi-beam or girder carrying Mn 68 over Redwood R Diversion Chan in Lyon County, Minnesota. It was built in 1962, so it is 63 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 3,810 vehicles a day, roughly 12% of them trucks, projected to reach 4,050 by 2041. The structure is 140 ft (42.6 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMn 68
CrossesRedwood R Diversion Chan
Location0.6 MI NW of JCT TH 59
RouteState Highway 68
CountyLyon County
StateMinnesota
Coordinates44.45879, -95.80649
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.7 US tons
Inventory rating40.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length140 ft (42.6 m)
Longest span46 ft (14 m)
Deck width33 ft (10.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,810 (2021)
Projected traffic4,050 by 2041
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$481 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 68 over Redwood R Diversion Chan built?

It was built in 1962, making it 63 years old in 2025.

What condition is Mn 68 over Redwood R Diversion Chan 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 Mn 68 over Redwood R Diversion Chan carry?

About 3,810 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is Mn 68 over Redwood R Diversion Chan?

The structure is 140 ft (42.6 m) long with a longest span of 46 ft (14 m) and a deck 33 ft wide.

Who owns Mn 68 over Redwood R Diversion Chan?

It is owned by the State Highway Agency.