US Bridges

Mn 56 over Rose Creek

Fair

Mower County, Minnesota · 0.4 MI W of JCT Csah 19 · Structure no. 6468

Built
1950
75 years old
Condition
Fair
inspected August 2023
Type
Girder and Floorbeam System
Concrete
Length
64 ft
1 main span
Daily traffic
2,533
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 56 over Rose Creek is a concrete girder and floorbeam system carrying Mn 56 over Rose Creek in Mower County, Minnesota. It was built in 1950, so it is 75 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 2,533 vehicles a day, roughly 16% of them trucks, projected to reach 2,400 by 2042. The structure is 64 ft (19.5 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesMn 56
CrossesRose Creek
Location0.4 MI W of JCT Csah 19
RouteState Highway 56
CountyMower County
StateMinnesota
Coordinates43.60643, -92.83679
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.4 US tons
Inventory rating29 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length64 ft (19.5 m)
Longest span60 ft (18.3 m)
Deck width34 ft (10.4 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,533 (2022)
Projected traffic2,400 by 2042
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$220 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 56 over Rose Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is Mn 56 over Rose Creek 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 2023.

How much traffic does Mn 56 over Rose Creek carry?

About 2,533 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is Mn 56 over Rose Creek?

The structure is 64 ft (19.5 m) long with a longest span of 60 ft (18.3 m) and a deck 34 ft wide.

Who owns Mn 56 over Rose Creek?

It is owned by the State Highway Agency.