NTH is on a award-winning roll after taking the 2017 Trenchless Technology Project of the Year honors and an ACEC MI Honorable Conceptor Award for Engineering, NTH headed to D.C. for the ACEC National Engineering Excellence Awards Gala to accept a Grand Award. NTH's project, OMID: Setting a New Standard for Infrastructure Renewal, was chosen as one of the top 16 projects in the nation.
The Oakland-Macomb Interceptor Drain (OMID) is a large diameter sewer system that serves over 800,000 residents of Oakland and Macomb Counties. This sewer was constructed in the I970s, and has experienced several catastrophic collapses over its service life, the latest occurring in 2004. The OMID system consists of mostly 8-foot to I 3-foot diameter sewers that are up to 110 feet deep, extending below major transportation and power transmission corridors, which serve several million people and businesses.
NTH performed several inspections in 2005 through 2008, and found that many areas of the sewer were in poor condition and could be subject to additional collapses. The OMID Board chose NTH to lead a team of design consultants and develop an approach for rehabilitation of the system, and to prepare contract documents for three-phase rehabilitation and repair program. Segment 3 (Contract 4) of the program began construction in November, 2013 and was substantially completed in July, 2016.
This segment of the OMID Repair Program was a first for our industry in many ways. Never before had a repair program been attempted at such a large diameter (up to 13 feet), at such extreme depths (up to 110 feet), at these lengths (over seven miles), without the ability to bypass flow. This unprecedented scope of construction required complex flow control systems; innovative construction means, methods, and equipment; and efficient operations in tight work windows. Because of the truly unique nature of this project and the challenges involved in its successful completion, Segment 3 of the OMID Repair Program has garnered national attention in our industry.