Rules for building driveway entrances

Driveway approaches shall be constructed as specified in the "Standard Details For Public Works Construction" dated September 1984, and as may be amended from time to time. Driveway approaches can be constructed of asphalt concrete material or Portland concrete material.Residential Driveway Approaches.A minimum of four (4) inch base course and two (2) inch asphaltic concrete wearing surface shall be provided for asphalt concrete approaches and a minimum thickness of four (4) inches shall be provided for concrete approaches. When concrete driveway approaches are constructed, expansion joints shall be provided along the property line.Driveway approaches shall be normally limited to one (1) per residential lot and shall be of standard design; provided additional approaches may be permitted when in the discretion of the County Engineer, the additional approaches will not interfere with traffic control, traffic safety or the availability of street parking.Design of standard approaches shall have a minimum width of nine (9) feet at the property line flaring out to twenty-nine (29) feet at the edge of pavement.A driveway approach serving a double car garage or two (2) or more residences shall not exceed twenty (20) feet in width at the road boundary and from the road boundary shall be flared out on both sides so that at its intersection with the public street or road the driveway width shall not exceed forty (40) feet.Where concrete curbing, driveway approaches and concrete sidewalks have been constructed, a driveway approach shall not exceed twenty (20) feet in width at the curb lines.Commercial Driveway Approaches.A minimum of four (4) inch base course and two (2) inch asphaltic concrete wearing surface shall be provided for asphalt concrete approaches and a minimum thickness of six (6) inches shall be provided for concrete approaches. When concrete driveway approaches are constructed, expansion joints shall be provided along the property line.The minimum driveway width shall be fourteen (14) feet for one-way traffic and twenty-four (24) feet for two-way traffic. The maximum width shall be thirty-five (35) feet.When more than one (1) driveway is to serve a given property frontage the total width of driveways shall not exceed sixty percent (60%) of the frontage where such a frontage is one hundred (100) feet or less. When the frontage is more than one hundred (100) feet, the total driveway width shall not exceed fifty percent (50%) of the frontage. The maximum width of individual driveways shall not exceed thirty-five (35) feet.When more than one (1) driveway is necessary to serve any commercial property, not less than twenty (20) feet of full height curb shall be provided between driveways. This distance between driveways shall also apply where curbs and gutters are not to be placed.