The County has two intersections of major arterial highways that are federally-designated routes: Waterloo (US Routes 50/17 & 340), and Double Tollgate (US Routes 340 & 522) that are uniquely well-suited locations for business activities requiring auto or truck access. Area plans are necessary to insure that appropriate areas of land are provided for such development, that the necessary utility services are available, and that the character of the development enhances the character of the County.

The Board of Supervisors adopted the Double Tollgate Area Plan in May 2002. This Plan calls for an increase in the area zoned Highway Commercial at this intersection from 24 acres to 44 acres, establishment of access management standards to protect the carrying capacity of the primary highways, and provision of central water and sewer service. While there has been a substantial increase in the volume of traffic on Route 522, no new private development has occurred since adoption of the Plan. As no substantial change in the character or circumstances of this area have occurred since the adoption of its Plan, a review and update is not warranted at this time.