Exchange Parkway

Allen, Texas

BBI provided engineering design services for the expansion of two segments (Alma Drive to US 75 and Greenville Avenue to Allen Heights Drive) of Exchange Parkway from a four lane median divided thoroughfare to a six lane median divided thoroughfare with signal and intersection improvements for eight locations along the corridor to increase mobility along with the addition of left turn lanes, right turn deceleration lanes and barrier free ramp improvements. Protecting existing median trees, planting additional trees and constructing irrigation improvements were also key aspects of the project. The total project length was 12,800 linear feet (nearly 2.5 miles), and a major success of the project was improved traffic flow due to a 33% increase in capacity.