Dates: April 03, 2012 to July 02, 2012
Location: Cannon Air Force Base, Clovis NM
Owner: US Army Corps of Engineers
Contractor: Sundt Construction
Description: Install 260′ of 76″ casing under runway for a storm drain.
Challenges: Tight time frame with no extensions possible due to runway being shut down. Tunneling under a runway with only 3′ of cover. Grade critical to prevent damage.
Method: Hand Tunneling
Results: Tunnel completed over 2 weeks ahead of schedule, storm drain installed on line and grade.