Mn 57 over S Br Mid Fk Zumbro River

Good

Dodge County, Minnesota · 2.7 MI N of JCT TH 14 · Structure no. 20004

Built: 1996; 29 years old
Condition: Good; inspected July 2023
Type: Slab; Prestressed Concrete
Length: 178 ft; 3 main spans
Daily traffic: 5,462; 2022 count
Owner: State; State Highway Agency

About this bridge

Mn 57 over S Br Mid Fk Zumbro River is a prestressed concrete slab carrying Mn 57 over S Br Mid Fk Zumbro River in Dodge County, Minnesota. It was built in 1996, so it is 29 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,462 vehicles a day, roughly 2% of them trucks, projected to reach 6,600 by 2042. The structure is 178 ft (54.3 m) long and 53 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

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CarriesMn 57

CrossesS Br Mid Fk Zumbro River

Location2.7 MI N of JCT TH 14

RouteState Highway 57

CountyDodge County

StateMinnesota

Coordinates44.06453, -92.75474

Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

Component	Rating	Meaning
Deck	7 Good	Some minor problems.
Superstructure	7 Good	Some minor problems.
Substructure	7 Good	Some minor problems.
Channel and channel protection	7 Good	Some minor problems.

Last inspectionJuly 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour within limits of footing or piles

Structural evaluation7: Better than present minimum criteria

Deck geometry6: Equal to present minimum criteria

Waterway adequacy8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating65 US tons

Inventory rating50.4 US tons

Structure

Structure typeSlab

MaterialPrestressed Concrete

DeckConcrete, cast-in-place

Main spans3

Design loadHS 25 or greater

Structure length178 ft (54.3 m)

Longest span67 ft (20.3 m)

Deck width53 ft (16.1 m)

Roadway width44 ft (13.4 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,462 (2022)

Projected traffic6,600 by 2042

Trucks2%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway and pedestrian

CrossesWaterway

Detour if closed16.8 mi (27 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 57 over S Br Mid Fk Zumbro River built?

It was built in 1996, making it 29 years old in 2025.

What condition is Mn 57 over S Br Mid Fk Zumbro River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does Mn 57 over S Br Mid Fk Zumbro River carry?

About 5,462 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Mn 57 over S Br Mid Fk Zumbro River?

The structure is 178 ft (54.3 m) long with a longest span of 67 ft (20.3 m) and a deck 53 ft wide.

Who owns Mn 57 over S Br Mid Fk Zumbro River?

It is owned by the State Highway Agency.