Wetherill Engineering, Inc. is a diversified group of professionals providing more than twelve decades of combined experience in transportation planning, roadway and bridge design, site design and layout, structural engineering, and geographic information systems. Our hands-on approach puts us above our competitors. Wetherill Engineering, Inc. is headquartered in Raleigh, NC and is a DBE/WBE certified firm with the North Carolina Department of Transportation (NCDOT), Tennessee Department of Transportation (TDOT), the City of Raleigh, the City of Charlotte, RDU and several other agencies.