June 14, 2023 2:00PM Deadline for Submitting Questions June 16, 2023 4:30 pm Deadline to post Addendum PROJECT OVERVIEW Franklin County is seeking a qualified contractor to provide hot mix overlay for Kohl City Rd, Grob Rd, Gray Summit Hills Subd. The work shall consist of a bituminous overlay on an existing asphalt surface. The completion date of the project is no later than September 1, 2023. The bid is to include all labor, materials, equipment, services, etc. required for the performance and completion of the project. Items listed with respective quantities on the price sheet are tack coat, bituminous pavement, milling, pavement marking, traffic control, and mobilization. Scope of Work Requirements 1. Bituminous Pavement MoDOT Section 401 - All Bituminous Pavement is to be 1.75 inches thick unless otherwise noted. The edges past the required paving width shall be tapered down at a rate of 4 horizontal to 1 vertical on the edges if a surface exists to place the taper on. All taper shall be compacted by rolling. No density will be required on tapers. 2. Section 401.2.1 The grade of asphalt binder to be used is PG64-22. 3. Section 401.4 Job Mix Formula. The mix used shall be BP-1 pavement mix. In addition to the MoDOT Specification, the mix used shall be a mix previously used by MoDOT within the time limit requirements of Section 401.4.6. 4. Section 401.7.3 Subgrade Preparation. The existing roadway shall be considered the subgrade. The subgrade shall be cleaned and tacked according to Section 407. Any rutting or damage to the subgrade shall be fixed at the contractor's expense. 5. A certified testing agency shall be contracted by the Contractor to perform Quality Assurance (QA) Testing. QA testing shall address depth and compaction. Reports will be submitted to the Franklin County Highway Administrator in a timely manner. Payment will be incidental to the cost for bituminous material. 6. Tack Coat MoDOT Section 407 - Tack coat shall be applied at the rate of 0.07 Gallon/square yard or as directed by the inspector. 7. Traffic Control MoDOT Section 616 - Traffic control will be paid one (1) lump sum as noted on the pricing sheet. Each road will require one (1) Road Work Ahead and one (1) Flagger Ahead sign be placed at the beginning and end of each road. A minimum of two (2) flaggers will be provided to direct traffic around the work zone. Cost to relocate signs and flaggers shall be included in the bid. Construction signs and flagger will meet MUTCD standards. Please note Section 616.4.2 8. Pavement Marking MoDOT Section 620.50 - Section 620.2.2.1 Permanent pavement marking shall be in place not later than 30 days after final paving operations. Payment shall be made in lineal feet in place. Pavement marking shall be a 4-inch-wide yellow centerline paint mark. Centerline pavement marking shall be 10 feet long with 30 feet spacing. Edge lines shall be 4-inch-wide white paint mark along the entire length of the improved roadway. Note: No pavement Markings in Gray Summit Hills Subd. 9. Traffic Flow - One lane of traffic is required to be open at all times. Exposed oil shall not be open to traffic. 10. Milling - Milling will be required along the edge of the roadway where it abuts improved entrances, other than rock surfaces. Milling shall be a minimum of six (6) feet in width, minimum one and one-half (1 1/2 ) inches thick at the entrance tapering to nothing in six (6) feet and shall be paid based on surface square yard milled. No extra payment will be made for width of any milling greater than six (6) feet in width. The length of each mill for an improved surface shall be extended 25 feet on either side of the end of the entrance radii. Butt joints shall be placed at roadways intersecting the road being overlaid. Milling shall be a minimum of one and one half (1 1/2 ) inches at the intersecting road edge and tapering to nothing in twenty-five (25) feet. Payment shall be based on surface square yard milled. 11. Milling: Gutterline Where curdband gather are located, mill one and one half inch at gutter, 6' Wide to 0.00 thickness for entire length of roadway. 12. Rollers - Contractor shall provide adequately sized breakdown and finish roller to meet compaction requirements. 13. FCHD Information - Kohl City Road: 31, 900 sy Grob Road: 31,600 sy Gray Summit Hills Subd.: 23,000 sy Contractor site visit is strongly encouraged. Claims for conditions not acknowledged and addressed by addendum will not be considered.