US Bridges

Mn 56 over Prairie Creek

Fair

Goodhue County, Minnesota · 0.9 MI S of S JCT TH 19 · Structure no. 25031

Built
2017
8 years old
Condition
Fair
inspected August 2023
Type
Slab
Prestressed Concrete
Length
95 ft
3 main spans
Daily traffic
1,950
2019 count
Owner
State
State Highway Agency

About this bridge

Mn 56 over Prairie Creek is a prestressed concrete slab carrying Mn 56 over Prairie Creek in Goodhue County, Minnesota. It was built in 2017, so it is 8 years old, younger 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 5 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 1,950 vehicles a day, roughly 23% of them trucks, projected to reach 1,650 by 2039. The structure is 95 ft (29 m) long and 43 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

Location

Open in Google Maps
CarriesMn 56
CrossesPrairie Creek
Location0.9 MI S of S JCT TH 19
RouteState Highway 56
CountyGoodhue County
StateMinnesota
Coordinates44.45822, -93.01013
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating37.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length95 ft (29 m)
Longest span37 ft (11.2 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,950 (2019)
Projected traffic1,650 by 2039
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 56 over Prairie Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is Mn 56 over Prairie 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 Prairie Creek carry?

About 1,950 vehicles per day (2019 count), of which roughly 23% are trucks.

How long is Mn 56 over Prairie Creek?

The structure is 95 ft (29 m) long with a longest span of 37 ft (11.2 m) and a deck 43 ft wide.

Who owns Mn 56 over Prairie Creek?

It is owned by the State Highway Agency.