Repair Parallel Taxiway North Unbonded Overlay, Grand Forks AFB, North Dakota

Project Description:

This is a Fully-Designed Project. Project will include the following: Remove approximately 32,336 Square Yards of PCC pavement varying in thickness between 14 inches and 24 inches and replace with approximately 7,200 Square Yards of 18-inch PCC pavement and 3,000 Square Yards of 8-inch PCC pavement. In addition to the pavement to be removed and replaced, approximately 51,189 Square Yards of existing PCC will be overlaid with an unbonded overlay. The unbonded overlay will consist of 6" PCC on top of a 1" (minimum) asphalt bond breaker conforming to UFGS 32 12 15 HOT-MIX ASPHALT ‘HMA' FOR AIRFIELDS. Portions of the existing PCC will need to be milled in order to correct slope deficiencies. The depth of milling varies between 1" and 6" in depth. New PCC pavement shall conform to 32 13 11 CONCRETE PAVEMENT FOR AIRFIELDS AND OTHER HEAVY-DUTY PAVEMENTS with very stringent fine and coarse aggregate deleterious materials limits unique to military airfield pavement construction, weather severity classification of severe, enforcement of evaluation and testing for Alkali-Silica Reactivity per UFGS 32 13 11 requirements for both fine and coarse aggregates, Air Force durability requirement that aggregate shall have a satisfactory service record in freezing and thawing of at least 5 years successful service in three concrete paving projects or aggregate with durability factor of 50 or more when subjected to freezing and thawing of specimens prepared in accordance with ASTM C 1646/C 1646M and tested in accordance with ASTM C 666/C 666M, Procedure A for aggregates not having a satisfactory demonstrable service record. Removal of approximately 81,813 Square Yards of 2-inch hot-mix asphalt pavement and replacing with 39,600 Square Yards of 2-inch hot-mix asphalt pavement conforming to UFGS 32 12 15 HOT-MIX ASPHALT ‘HMA' FOR AIRFIELDS; Associated work includes the installation of preformed and poured joint sealant; removal & replacement of approximately 15,000 Linear Feet of edge light cable, conduit and counterpoise, 136 elevated & semi-flush taxiway edge lights, base & transformer installation; pavement marking; seeding and minor grading.

The estimated construction cost of this project is between $20,000,000 and $25,000,000.