Site work and paving for a road / highway in Caro, Michigan. Completed plans call for site work for a road / highway.

The work consists of placing and compacting hot mixed asphalt to patch existing asphalt roads at various locations throughout Tuscola County or on state highways under the maintenance jurisdiction of the Tuscola County Road Commission. All work shall be performed in accordance with Section 501 of the 2020 MDOT Standard Specifications for Construction, as modified by supplemental specifications and provisions. Bids must be submitted on the Road Commission forms in a plainly marked, sealed envelope; faxed or emailed bids will not be accepted. Plans and specifications are available online. Bidders who download plans must email the highway engineer to be added to the plan holders list for addendums. Contractors must examine the proposal, permits, plans, and location of the work, and be fully informed regarding the nature of the work and conditions for performance. Any addenda must be noted and initialed. 1. Paver: Each paver must be equipped with a full-width vibratory or tamper bar screed that can spread and finish the HMA to the required cross section and grade. Use a paver that produces a uniformly finished surface free from tearing or other blemishes and free from measurable segregation. 2. Types of Machine Patches: a. Culvert Crossings: The contractor shall remove the existing gravel material to the existing width of the roadway and replace it with bituminous material at a depth of 2.5" or other depths specified by the Engineer. All primary roads will be a minimum of 3" in two equal lifts. The method by which the gravel is to be removed will be up to the Contractor. Immediately upon removing the gravel the aggregate base shall be compacted and the void space shall be replaced with the bituminous hot mix asphalt. The gravel removed from the patch area shall be wasted along the shoulder and graded to match the existing slope of the shoulders. A tack coat shall be applied to all vertical edges of existing HMA. b. Pavement Dips/Wedging: A tack coat shall be applied to the existing pavement surface for proper adherence of the patch material. The crown of the existing roadway shall be matched, and bituminous material feathered at edges. c. HMA Surface Removal: The Contractor shall remove the existing asphalt or concrete material to a depth requested by the engineer in accordance with the MDOT 2020 Standard Specifications for Construction 501.03 and 501.04. The Contractor shall be responsible for conditioning the aggregate base prior to placing the HMA. Asphalt patch is to be paved immediately after removal. Removal of existing asphalt material is paid for by HMA Surface Removal (Syd). 3. Skip Patching: Includes the placement of the designated amount of hot mixed asphalt material throughout the defined mile section of roadway. Skip patching includes all labor, materials, and equipment to prepping the road surface, tacking the existing asphalt surface, mobilization from one site to another, and placement and compaction of the HMA material on the following existing surfaces - HMA, milled surface, aggregate base, or as determined by the engineer. The total quantity of asphalt will be utilized over the entire one (1) mile section of the roadway. 4. Pavement for Butt Joint Removal: If a butt joint is required, the Contractor shall remove the existing surface to the thickness of the proposed overlay, for the full width of the joint. Uniformly taper the removal to the original surface over a minimum of 35 feet, (1" per 35'), or as agreed to with the Engineer. Installation of a butt joint is paid for by Butt Joint (Each). 5. Cold Milling: The Contractor shall provide a cold milling machine capable of removing the existing HMA surface to the depth, width, grade and cross section as determined by the Engineer. All equipment and workmanship shall be in accordance with the MDOT 2020 Standard Specifications for Construction. Cost associated with cold milling is paid for by Cold Milling 1/2 Day (Lump Sum) and Cold Milling Whole Day (Lump Sum). A day is defined by a 12-hour workday and based on time on project site. Cleaning, sweeping, and trucking to be performed by Tuscola County Road Commission Crews. 6. Bond Coat: The Contractor shall apply a bond coat to all exposed edges of the patches and between lifts of asphalt. The Bond Coat shall be applied at a uniform rate of application between 0.05 to 0.15 gallons per square yard. The bond coat will not be paid separately but included in the cost of the HMA Patch.