Transportation

DelDOT – Construction Inspection Services Projects

SR 141/Centre Road Rehabilitation, Greenville, DE Centre Road is a major traffic artery in Greenville, Delaware which is on the western fringes of the City of Wilmington.  Technically known as SR 141, Centre Road connects major population areas of the northern and western suburbs of Wilmington with industrial and residential areas as well as providing access to I-95.  This 1.4 mile long section of SR 141 was deteriorating...

Delaware Coastal Airport Construct Parallel Taxiway D, Georgetown Delaware

The project includes the design of a proposed taxiway at the Delaware Coastal (DCA). N&W is the Geotechnical Engineer of Record and to date has completed the drilling, and field CBR tests. We are currently performing lab testing for the taxiway pavement design. The field work consisted of thirty-eight (38) test borings and four (4) field CBR tests. The drilling consisted of approximately 360 feet of continuous SPT sampling and 25...

DelDOT Statewide Pipe Replacement Design Build Project

The State of Delaware has more than 200 locations throughout the state where bridge-length corrugated metal pipe culverts are corroding and are in need of replacement. In most of these locations, the corrugated metal pipes are at or beyond their expected life. DelDOT decided to use the design/build method to expedite replacement of a group of these culverts with new reinforced concrete pipes. With the design/build method, a team...