Open trench construction will be used to install most of the pipeline for this project. This technique includes the excavation of a trench to the necessary depth to lay the pipe. The trench will include trench boxes to provide vertical walls to minimize the width of the excavation, and to protect the pipe crew working in the trench, which also minimizes utility and traffic impacts.
Trenching activity will take up the width of one lane of traffic, requiring the closure of up to half the width of the road. Traffic control, including two way flagging, traffic cones and construction area traffic signs, will be used in areas under construction. Traffic delays can be expected.
Trench construction will be done in stages. Segments can be up to 200 feet in length and be active for up to two weeks. To allow normal vehicle movement to continue prior to full completion of an area, segments will be backfilled and covered with temporary pavement while work continues.