NATM Through Clean Sands – The Michigan Street Experience

Synopsis:

A 100 ft long, 20 ft high and 18 ft wide NATM tunnel was excavated through grouted clean sands beneath a busy city street, including a variety of existing utility lines. The new tunnel associated with a hospital expansion will serve as a pedestrian tunnel connecting a parking structure with a new hospital facility. Tunnel construction started on December 15, 2005 when drilling for the grouting program started and was completed on May 26, 2006 when the tunnel final lining was completed. The tunnel was constructed by Kiewit Construction Company as a tunnel subcontractor to The Christman Company who is constructing the hospital facility for Spectrum Health in Grand Rapids, Michigan. URS was the project designer. Gall Zeidler Consultants, LLC were the contractor’s NATM consultant.

NATM Through Clean Sands – The Michigan Street Experience
2007 RETC Conference Proceedings
June 10-13, 2007
Toronto, Ontario, Canada