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.

Always plan ahead, know your route and allow extra travel time.

  • Remember your resources:
  • By phone: 1-800-ZOO-0003 (1-800-966-0003)
  • On Twitter: @travelmrmc
  • TravelMRMC app
  • Have a question? Send an email to: interchangeinfo@chw.org.
Major ramp closure: I-41 South to I-94 East

Work on the zoo interchange continues with a long-term ramp closure beginning on Oct. 1, 2016. The system ramp from 41 South to 94 East will close through Spring 2017.

This will impact you if you leave campus and take 41 South from Watertown Plank Road to 94 East towards downtown. Travelers can use 84th street as an alternate route. Get all the details on the closure and routes here.Major ramp closure: I-94 East to I-41 North

If you’re coming from the west to Children’s Hospital of Wisconsin, your route is about to change. Beginning Aug. 15, the I-94 East system ramp to I-41 North will close until late spring 2017. During this closure, travelers should one of these alternate routes.

No access to I-94 East from US 45 South at Watertown Plank Road
The Watertown Plank Road entrance ramps to US 45 South will have no access to I-94 East. This is long-term closure expected to last until summer 2017. Alternate routes include:

  • Watertown Plank Road west to HWY 100
  • Wisconsin Avenue to 84th Street
Major Zoo Interchange system ramps now are closed
Zoo Interchange system ramps I-894/US 45 North to I-94 West and I-94 West to US 45 South now are closed. The westbound to southbound system ramp will remain closed until fall 2017. The northbound to westbound system ramp will remain closed until late 2015. During these closures, motorists are encouraged to use regional alternate routes when possible, in addition to the local alternate routes. Get alternate routes.

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.