Specifications include, but are not limited to: Paved Shoulder Widening, Asphalt Overlay, and Rumble Strips. Trench existing shoulder and widen shoulder pavement from Station 263+00 to Station 299+80 and from Station 425+40 and Station 427+75 as shown in the plans and details. The existing roadway is to be overlaid from Station 263+00 to Station 299+80 and from Station 425+40 to Station 427+75.This work will include placement of an asphalt surface course, installation of centerline and edge line rumble strips, and application of pavement markings. Refer to the Paved Shoulder Widening With Asphalt Overlay Detail and rumble strip Standard Drawings for further information. Stations listed are approximate and may need to be adjusted to remain within right-of-way or avoid a sensitive obstruction. The Engineer will make the final determination as to the locations and quantities required to complete the work based on the existing conditions encountered during construction.; Culvert Pipe Extension/Replacement. There are locations throughout the project where culvert pipes are being extended or replaced. Locations are noted in the Culvert Pipe Extension/Replacement Summary. Other items that may be included with the pipe extensions include culvert headwalls, safety box inlets, sloped & mitered concrete headwalls, shouldering, ditching, channel lining, etc. Refer to the Special Note for Pipe Replacements/Extensions for more information on this item of work. For each extension, the Contractor shall remove a minimum of 4’ of pipe or the length of pipe to the first joint. Refer to the Culvert Pipe Extension/Replacement Summary for estimated quantities. The pipe extensions shall be in-like kind of the existing pipe.; The Sloped & Mitered Concrete Headwalls shall be constructed as shown on the Sloped & Mitered Concrete Headwall detail sheet. This headwall is intended to combine the benefits of a pipe headwall with the advantages of safety and adaptability by allowing the headwall to be custom fit with the surrounding embankment. The Pipe and Drainage Items Summary identifies which pipe ends are to receive the Sloped & Mitered Concrete Headwall. The identified pipes shall be mitered at an angle to match the final embankment slopes at each the pipe location. If the pipe is on a skew, miter the pipe so that when the new headwall and final grading is complete, there is no slope discontinuity or bulge that is common with traditional precast headwall installations. In other words the embankment slope should not be warped to fit the pipe and headwall; the pipe should be mitered and the headwall installed to match the embankment slope. When completed the edges of the Sloped & Mitered Concrete Headwall should be flush with the surround ground line. Payment at the Contract unit price Each shall be full compensation for furnishing all labor, materials, equipment, and incidentals necessary to miter the pipe and install the headwall.; Entrance Pipe Replacement & Driveway Surfacing. Due to areas of paved shoulder widening and ditching and shouldering, there are locations where the existing entrance pipe will have to be removed and relocated to accommodate the improvements. Refer to the Entrance Detail for details on this work item. The Engineer will make the final determination as to the locations and quantities required to complete the work based on the existing conditions encountered during construction.; Reinforced Concrete Box Culvert Extensions. There is one location within the project where the existing reinforced concrete box culvert is being extended.Location and estimated quantities are noted on the Box Culvert Extension Summary.Refer to the Structure Plans, Special Note for Box Culvert Extensions, and Traffic Control Plan for more details and information on this item of work.Paved shoulder widening with asphalt overlay, ditching and shouldering, and guardrail replacement are also associated with this box culvert extension.; Channel Lining Class II.: A quantity of 940 tons has been included on the Ditching and Shouldering Summary. An additional 100 tons has been include d in the contract for potential use along areas of regraded ditch line and/or fill slopes, inlets and outlets of pipes, and any other areas as directed by the Engineer. The Contractor and Engineer should work together to determine the location and best use of Channel Lining Class II throughout this project. The Engineer will make the final determination as to the placement of Channel Lining Class II.