Site work and paving for a road / highway in Denton, Texas. Completed plans call for site work for a road / highway; and for paving for a road / highway.

Project scope includes approximately 14,750 linear feet of 6" reinforced concrete street pavement. Bids received after the closing time will be returned unopened. The successful Bidder, if any, will be the responsible Bidder which in the Owner's judgment will be most advantageous to the District and result in the best and most economical completion of the Project as per Texas Water Code 49.273. Site Preparation and Grading Limestone was encountered within 4 ft of the ground surface in several of the borings. We expect limestone will encountered during grading and general excavation at this site. From our experience, this limestone can be hard and difficult to excavate. Rock excavation methods (including, but not limited to rock teeth, rippers, jack hammers, or sawcutting) may be required to remove the limestone. Crushing equipment may be required to process this limestone if it is desired to use this material as compacted fill on the site. The contractor selected should have experience with excavation in hard limestone. All areas supporting pavement or areas to receive new fill should be properly prepared. After completion of the necessary stripping, clearing, and excavating and prior to placing any required fill, the exposed subgrade should be carefully evaluated by probing and testing. Any undesirable material (organic material, wet, soft, or loose soil) still in place should be removed. The exposed subgrade should be further evaluated by proof-rolling with a heavy pneumatic tired roller, loaded dump truck or similar equipment weighing approximately 25 tons to check for pockets of soft or loose material hidden beneath a thin crust of possibly better soil. Proof-rolling procedures should be observed routinely by a Professional Engineer or his designated representative. Any undesirable material (organic material, wet, soft, or loose soil) exposed from the proof-roll should be removed and replaced with well-compacted material as outlined in the Fill Compaction section. Prior to placement of any fill, the exposed subgrade should then be scarified to a minimum depth of 6 inches and recompacted as outlined in the Fill Compaction section. If fill is to be placed on existing slopes (natural or constructed) steeper than six horizontal to one vertical (6:1), the fill materials should be benched into the existing slopes in such a manner as to provide a minimum bench width of five (5) ft. This should provide a good contact between the existing soils and new fill materials, reduce potential sliding planes, and allow relatively horizontal lift placements. Even if fill is properly compacted as recommended in the Fill Compaction section, fills in excess of about 10 ft are still subject to settlements over time of up to about 1 to 2 percent of the total fill thickness. This should be considered when planning or placing deep fills, especially where utilities are planned below pavement. Slope stability analysis of embankments (natural or constructed) and global stability analysis for retaining walls was not within the scope of this study. Multiple Locations Are Available In This Project.