A Robbins Double Shield TBM broke through at the Black River Tunnel Project on April 29, 2014. The project marks the first use of Onsite First Time Assembly (OFTA) in the United States. Project geology consisting of soft shale made for great advance rates and minimal cutter wear − only seven cutters were changed during excavation. The creation of local jobs by contractor Super Excavators boosted the town of Lorain’s local economy. A unique tunnel lining method of ring beams and lagging was used, instead of segments.