Minnesota Department of Transportation

511 Travel Info

Hwy 43 Bridge


Traffic impacts

Overall, the City of Winona will remain open for business throughout the duration of this project and commuters, visitors and shoppers will have little to no travel impacts. This is mainly due to the addition of a second new bridge to the project scope, allowing the new bridge to be built offline first, while traffic is maintained on the existing structure. Once Hwy 43 traffic is switched to the new structure, the existing bridge will be rehabilitated and reconstructed.

New traffic patterns begin Aug. 27 when new Winona Bridge opens

Motorists using Hwy 43 bridges in Winona over the Mississippi River will encounter new traffic patterns Aug. 27, when the new bridge opens. Single-lane traffic will be used entering and leaving Winona on the bridges.

Wisconsin toward Winona

The new bridge is scheduled to open for traffic later in the day on Aug. 27. Motorists traveling from Wisconsin toward Winona will cross the river in a single lane on the new bridge, then turn right onto Fourth Street. 

Left turns off the bridge into Winona will not be allowed. In addition, Winona Street between Fifth and Fourth streets will be temporarily closed.

Winona toward Wisconsin

Motorists traveling from Winona toward Wisconsin will use the existing bridge in a single lane. Access to the bridge will be by right turn only. (See the map.)

Winona Bridge opening
Click map for larger PDF version.
Bridge detour map
Click map for larger PDF version.


These detours are expected to be in effect until mid to late October to allow construction crews to complete the new roadway work at the base on the new bridge. Additional short-term traffic impacts may occur after this initial phase. Rehabilitation work is expected to begin in December on the existing bridge. At that time, traffic in both directions will use the new bridge in single lanes.

A planned community celebration to commemorate the opening is scheduled for 11 a.m., Aug. 27 at the foot of the new bridge.

Latsch Island Bridge Detour

Beginning Monday, April 18, traffic coming from Wisconsin to Latsch Island cannot make the right turn directly onto Latsch Island. Instead, continue into Winona, then follow the directions below to continue back onto the bridge. This detour will be in place for about one month. First, turn left on Fourth Street, then right on Johnson Street, right on Fifth Street, right on Washington Street, left on Fourth Street, and finally, right on Winona Street to get back on the bridge before exiting at right to Latsch Island.
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Winona bridge bike trail detour
Click map for larger PDF version

Lane/road closures

  • Beginning Monday, April 18th, traffic coming from Wisconsin to Latsch Island cannot make the right turn directly onto Latsch Island. Instead, continue into Winona, then follow these directions (PDF) to continue back onto the bridge. This detour will be in place for about one month.
  • The Hwy 43 Mississippi River Crossing will stay open at all times throughout the project.
  • Peak hour traffic impacts on Hwy 43 across the river will be minimized.
  • 3rd Street and 2nd Street will not be closed at the same time; 2nd Street closures will be limited to weeks in duration, while 3rd Street may have long term closures.
  • Pedestrians will be accommodated throughout the project, and pedestrian routing during Hwy 43 detours will be coordinated closely with city staff.

Bike trail closures

The bicycle trail on the levee under the Winona bridge is closed during construction until late 2019. Bicyclists should detour from Johnson Street to Second Street to Riverview Drive. View/print bike detour map (PDF). The section of the bike trail from Riverview Drive to the bridge, which will be used as construction access, will be rebuilt as part of the project and re-opened following construction. View/print project overview map (PDF).

Weight restrictions

The Hwy 43 Winona bridge has a gross weight limit of 80,000 pounds until further notice.

Project news

Winona Bridge simulation

Informational tours

Informational tours are being held on boat cruises so that viewers can safely and conveniently view the bridge progress. During each tour, MnDOT representatives will give a presentation and informally field questions and answers, while the tour provides fairly close-up viewing of the bridge progress.

Construction work

About this project

Summary of work

I-494 Ramp Closures
The Winona Bridge carries an average of
11,300 vehicles per day

MnDOT is moving ahead with a two-bridge solution that rehabilitates the existing bridge and builds a new permanent bridge immediately upstream of the existing bridge. We've gotten some questions about why the existing Cass Street Bridges in La Crosse include a tied arch structure next to a through truss as well as why the plans for the new Red Wing Bridge include a tied arch bridge alternate, while the new Winona Bridge is planned to be built using a concrete box girder design along with rehabilitation of the existing bridge. The answer is: due to several factors, a tied arch design was considered as an option for the new Winona Bridge project but the concept did not ultimately become the recommended new bridge type. Learn more.

Key issues


  • $150 million to $175 million (total planning-level cost estimate; cost range includes right-of-way, design and construction contract administration and reflects a number of unknowns and assumptions)


  • July 2014: Start of construction. Contractor starts building temporary access facilities on both sides of the river.
  • Aug. 2014: Start of permanent construction of new bridge river piers with a goal of getting the critical elements of the piers raised above the water before spring flooding in 2015.
  • January 1, 2015: MnDOT possession of Right-of-Way. Start of demolition of buildings that are being acquired.
  • March 2015: Proceed with roadway work on both sides of the river, including in Winona, and with the remainder of the work to construct the new bridge.
  • Fall 2016: Completion and opening of new bridge. Close old bridge and begin rehab and reconstruction work.
  • Fall 2019 / Spring 2020: Overall completion. Traffic open on both bridges.