STH 175 & STH 167 (Holy Hill Rd.)

Germantown, WI

MTJ Roundabout Engineering provided the roundabout analysis, design, peer review for 30/60/90% plans, and public outreach support to WisDOT, as a sub-consultant to Westbrook Engineering. This challenging roundabout project includes high-speed approaches in a transitional/exurban setting.

Key to this effort was developing a design that was sensitive to ROW impacts replacing an existing two-way stop, while allowing safe residential drives to exist to ensure safety and access for all modes of travel. MTJ played a pivotal role in achieving the correct roundabout design solution and acceptance of this unique roundabout application.


  • Ex-urban/transitional context
  • High-speed approaches
  • OSOW accommodations
  • School nearby/ped safety

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