The Pennsylvania Turnpike Commission advertised for consultants to provide design services for the Total Reconstruction of the Turnpike from the Morgantown Interchange (MP 298) to the Downington Interchange (MP 312). Ammann & Whitney entered the fray, competing with every major engineering ﬁrm in the region. We were ultimately selected for the middle, and longest, of the three sections, which extends from MP 302.5 to 308. As the prime consultant, we will lead the team and provide preliminary and ﬁnal design services for the section that passes through West Nantmeal, East Nantmeal, Wallace, and Upper Uwchlan Townships in Chester County. Our project will include the total reconstruction of approximately 5.5 miles of mainline roadway, and will result in a six‐lane typical section with 12 foot outside shoulders and a 26 foot‐wide median area. The existing roadway has four lanes, substandard shoulders and a 10 foot median, so this project will result in a vastly improved and enlarged roadway. To enable the widening, our contract also includes the replacement of all overhead structures, including three bridges, one mainline bridge, the lengthening of two culverts, and possible construction of new retaining and/or noise walls. Design and construction durations will be four and three years, respectively.
With a total construction value estimated at $80 million and our agreement in the neighborhood of $12 million, this is the Philly oﬃce’s largest win. This project is very similar to the design work we are currently completing on the Turnpike’s mainline near Carlisle, PA and north of Lansdale on the Turnpike’s Northeast Extension. The outstanding work we have done on these and other projects for the PTC has enabled us to rise above the pack and earn this great win.