The typical size of an elementary school and playground built today is seven acres or greater. Access along Arterials Download Arterial Access Information as a pdf document. To further describe the road network overlay and how a road system is designed, Design Center staff presented a poster illustrating how access is controlled along county roads. Controlling access is done to minimize the number of conflicts along a corridor, improving safety and increase speeds. On arterial roads such as 125th Avenue, Lexington Avenue and 109th Avenue full access is limited to every one-half mile.
Full access means both left and right turns are permitted at the intersection.
These intersections could be signalized, although the county's preference is to limit signals to every mile at most on these roads. Full access intersections that are not signalized would have stop signs for traffic entering onto the county road. For less-traveled collector streets, such as Sunset Road, full access is allowed every one quarter mile. Between full access points, intermediate access is provided. Intermediate access intersections allow only right turns in and right turns out.