The construction scope of work generally includes the includes the rehabilitation of Runway 5- 23 (6,002’ long x 100’ wide) and the reconfiguration of two mid-field taxiways. The project will be bid with two Base Bid Alternates and one Additive Bid. Base Bid: Alternate No. 1 (Concrete) - This bid alternate consists primarily of placing a 6-inch or 7-inch layer of FAA P-501 Portland Cement Concrete (PCC) pavement over the existing asphalt pavement after it has been milled 0-6 inches for precise grade correction. This bid alternate also includes placement of nominal 2 inches of SCDOT Type C asphalt pavement on the portion of existing paved shoulders to remain, pavement demolition by milling of remaining failed shoulder pavement, runway grooving, pavement markings and erosion control. Base Bid: Alternate No. 2 (Asphalt) - This bid alternate consists primarily of placing a 4-inch layer of FAA P-401 bituminous pavement over the existing asphalt pavement after it has been milled 0-4 inches for precise grade correction. This bid alternate also includes placement of nominal 2 inches of SCDOT Type C asphalt pavement on the portion of existing paved shoulders to remain, pavement demolition by milling of remaining failed shoulder pavement, runway grooving, pavement markings and erosion control. Either bid alternate may be awarded, but not both. It is the preference of the OWNER to award Base Bid: Alternate No. 1, subject to availability of funding. Additive Bid No. 1 includes pavement removal by milling of Taxiway A-2 and a portion of Taxiway A-3, removal and reinstallation of existing taxiway edge lighting and signage, required earthwork, placement of nominal 6 inches of crushed aggregate base course and nominal 4 inches of FAA P-401 bituminous pavement, pavement markings and erosion control.
