About this Project

This reconstruction project consists of a seven-mile section of US 322 (Conchester Highway) between Route 1 and I-95 in Delaware County. The project was split into three design sections, starting with Section 101 at the western limit. AEG has provided significant design support for the entire project corridor and was responsible for geotechnical studies for the alternatives analysis and environmental studies. Services provided included testing and analysis for pavement design; soils and geological engineering investigations; the reconnaissance soils and geologic reports; the performance of the subsurface boring, sampling, and testing program for the bridge, retaining wall, and sound barrier structures; and the required foundation design reports. Environmental studies included the evaluation of soils and geologic resources, erosion and sedimentation control, and groundwater and hydrogeology, which were summarized in the Environmental Assessment (EA).

Section 101 consists of three miles of roadway with improvements, including two bridges, five retaining walls, two box culverts, one sound barrier, and several intersection upgrades. AEG was also responsible for surveying services. Section 101 was recently completed and is pictured on this webpage.

Sections 102 and 103 also involve preliminary engineering, final design, and construction services for widening the remaining four-mile section of Conchester Highway. This expressway reconstruction includes interchange and structure improvements, including three bridge replacements, 20 new retaining walls, five new sound barriers, six replacement culverts, and eight new static and dynamic signs. AEG is responsible for geotechnical and post-construction stormwater management studies and foundation and roadway design analyses for both Sections.