Zoo Interchange updates

The Zoo Interchange project touches the cities of Milwaukee, Wauwatosa and West Allis and will cover about nine miles of freeway leading to and through the actual interchange. The street and highways surrounding the Milwaukee Regional Medical Complex, which includes Children's Hospital of Wisconsin, are impacted. Check here for updates and resources from the Department of Transportation to help you throughout this long-term construction project.

Work in the surrounding area is under way. You may experience delays due to lane closures, utility work or detours. To ensure you arrive to your appointments on time, be sure to check the latest traffic information before leaving home. 

Get ready for the new and improved Watertown Plank Road!
Construction on the new Watertown Plank Road Interchange near Children’s Hospital of Wisconsin will be complete by the end of the year – but we will start using it soon! The interchange will open in phases. Please pay attention to changes in routes. As sections of the Watertown Plank Road Interchange open, access to US 45 from Wisconsin Avenue will be restricted. 

Here's what's happening in late September:

  • Closed: The northbound entrance to US 45 from Wisconsin Avenue will close.
  • Open: At the same time, the westbound Watertown Plank Road entrance ramp to US 45 North will open. 
All US 45 northbound traffic exiting the campus must use Watertown Plank Road and not Wisconsin Avenue, once the Watertown Plank Road ramp opens.

Download the Travel MRMC app
GPS systems will not provide accurate directions during construction. Navigate the roads and construction around the hospital and Children's Clinics Building in real time. Download "Travel MRMC" on Android and iPhone devices or search "Travel MRMC" at the App Store and Google Play. You also may find the best route based on your starting point.

Read the latest traffic report.

WI-Department of Transportation Links


Map of Construction

Map of Zoo Interchange Project including real-time traveler information and construction schedule information.

Current travel times

Make sure you arrive on time by checking the current travel times on construction areas.

Closures and Detours

View the latest highway closures including expected start and end times and detour information.

Real-Time Twitter Updates


Receive real-time updates from the Milwaukee Regional Medical Center.