Team Members

Acknowledgements

• Tara Wiese, AECOM • Kyle Reidsma, AECOM• Dan Whitenger, AECOM • Jeff Brinks, PE• Mark Lenters, Ourston Roundabout Engineering

From left to right: Kurtis Duemler, Micah Doorn, Nathan Breese, Ryan Betts

The Roundabout Project

2017: Team 09

Existing layout of the SW side of campus Proposed layout of the SW side of campus

• Construct a single-lane roundabout for the intersection of the entrance drive from Burton and Knollcrest Circle Drive. The proposed roundabout will:• Handle traffic more efficiently• Reduce pedestrian conflicts• Reduce confusion and unwelcoming impression to visitors

• Construct Knollcrest Circle Drive to the outside (west) of the parking lot. This includes:• Removing the need for pedestrians to cross traffic after parking • Relocating parking spots to account for the new route of the road• Rearranging visitor parking lot to incorporate a new landscaped area and add parking• Designing a proposed rain garden that will reduce the rain water runoff

Solution

In 2016, Calvin College released a master plan of the college’s campus, and one aspect of the master plan is vehicular circulation improvements. This project consists of two main components highlighted in the master plan:• Redesign the intersection where the entrance drive from Burton Street meets Knollcrest

Circle Drive• Relocate the southwestern portion of Knollcrest Circle Drive

Project Description

Design Highlights

• 130’ outside diameter roundabout• Roundabout designed for a 45’ coach bus• Maximum queue length of 2 vehicles• 99.6% parking spots maintained • Rain garden to drain 93,405 ft2 of pavement • 4 new visitor parking spaces• 8 crosswalks removed• Estimated cost of about $3.7 million