Robbins will supply a 30ft (9.26m) diameter Crossover TBM to the Kenny/Obayashi Joint Venture constructing the Ohio Canal Interceptor Tunnel (OCIT), in Akron, Ohio, marking the first time that a Crossover machine has been supplied in the US.
The OCIT comprises 6,240ft (1.9km) of TBM driven tunnel that will be lined with a one-pass precast segmental liner. The XRE TBM will be a cross between a hard rock shielded TBM and an EPB, and will be ideally suited for the anticipated mixed ground conditions. The rebuilt XRE TBM was originally used on the Mexico City Metro Line 12 and is due to be launched in the first quarter of 2017.
The OCIT tunnel is the largest component of Akron’s $1.4 billion mandated program to control overflows into the Cuyahoga and Little Cuyahoga rivers. It will convey dry weather sanitary flow by gravity to the Little Cuyahoga Interceptor (LCI) sewer and be capable of storing up to 25 million gallons of combined sanitary and storm flows during wet weather events. Work is due to be finished by the end of 2018.