Route 9 Road Widening

J Derenzo Co. completed this complex road widening and infrastructure project along a high traffic area of Route 9 in front of The Mall at Chestnut Hill. The team widened 3,000 linear feet of road, replaced the interior guardrail and made infrastructure improvements including drainage, signage and signaling.

The team temporarily re-directed the existing traffic lanes, complete with line striping, to divert traffic during construction. Work was completed in two phases over a year and a half; two lanes of traffic was maintained at all times throughout construction.

J Derenzo Co. removed the guardrail and replaced it with concrete barriers. The team widened the road from two lanes to three in each direction with a breakdown lane. They milled the pavement and overlaid new asphalt on the existing lanes, then laid down a thick new slab for the third lane. At the mall entrance, the crew installed a traffic signal and added turning lanes from the main roadway.

Along the 3,000 LF stretch of road, the team updated traffic lights at two other locations; installed drainage with new catch basins and drain manholes; installed all new sidewalks and reset the curb; dug hand holes; ran conduit for new and existing traffic signals; and modified existing lights. The team completed the project will all new line striping.