Bids will be opened in person at the Evans Community Complex at 9:00 am March 9th
Description of Work
Project # 1 will consist of Stagecoach Drive in the Ashcroft Height’s Subdivision from 39th Avenue to Stampede Drive. Project # 2 is 15th Avenue in the Platte Valley Subdivision from 34th Street north to 32nd Street. Both roadways are believed to have a five (5) inch thickness of asphalt mat. Project # 3 is roto-milling two inches of potholed arterial roadway, asphalt tacking the surface and skin patching the marked patching areas with a two-inch overlay. The two roadways affected are 37th Street (Eastbound and Westbound) at the intersection of 65th Avenue and 65th Avenue (Northbound and Southbound at the intersection of 37th Street.
Work for Project # 1 (Stagecoach Drive) of the 2021 Asphalt Reconstruction Project consists of roto-milling the entire surface of existing asphalt pavement estimated to be five (5) inches in depth, removal of five (5) inches of earthen in-situ sub-grade material, placement of coal ash fly ash treatment of remaining in-situ sub-grade material to a depth of twelve (12) inches, scarification, compaction and grading of fly ash treated sub-grade material, installing a six (6) inch class 6 base course layer (crushed concrete is not a suitable replacement product and will be strictly refused), compaction and grading of base course layer, soil sterilization of entire surface of the base course layer, placement of a two (2) inch bottom lift hot mix asphalt Grading S, SP 64-22, installing an emulsified tack layer, placement of a two (2) inch top lift hot mix asphalt Grading SX, SP 64-22, adjusting of existing water valves, sanitary sewer manholes, and storm drain manholes which are to be ¼” inch below the asphalt surface, concrete collars will not be installed around existing utility box structures and manholes, instead the utilities will be raised to grade prior to paving and asphalt will surround the utility boxes and manholes, installing 2’ wide thermoplastic stop bars at stop sign intersections as dictated.
Geotextile Grid is included in the contract in the event unstable sub-grade material is encountered. All QC Quality Control testing is to be considered inclusive of costs for compaction of each respective layer of street section whether it is asphalt, base material, fly-ash or earthen in nature. Traffic Control is to be included in the mobilization costs. Roto-mill material is considered the property of the City of Evans and will be hauled to the City’s storage yard.
The City of Evans recognizes that the project is located on local streets with accessibility concerns for the residents during construction. There are 46 homes that front the project and three cul-de-sacs that are trapped access points. The city highly recommends that the project scope for the sub-grade work be split into two phases (East and West). This could help mitigate traffic and parking concerns.
Work for Add Alternate # 1 (15th Avenue) of the 2021 Asphalt Reconstruction Project consists of roto-milling the entire surface of existing asphalt pavement estimated to be five (5) inches in depth, fine grading of the existing base course layer with additional base material included in the quantities for roadway crowning, soil sterilization of entire surface of the existing base course layer, placement of a three (3) inch bottom lift hot mix asphalt Grading S, SP 64-22, installing an emulsified tack layer, placement of a two (2) inch top lift hot mix asphalt Grading SX, SP 64-22, adjusting sanitary sewer manholes, which are to be ¼” inch below the asphalt surface, concrete collars will not be installed around existing manholes, instead the utilities will be raised to grade prior to paving and asphalt will surround the manholes, installing 2’ wide thermoplastic stop bars at stop sign intersections as dictated. Geotextile Grid is included in the contract in the event unstable sub-grade material is encountered. All QC Quality Control testing is to be considered inclusive of costs. Traffic Control is to be included in the mobilization costs.
Work for Add Alternate #2 (37th Street and 65th Avenue Skin Patches) of the 2021 Asphalt Reconstruction Project consists of roto-milling two (2) inches of existing asphalt pavement in marked areas, and placement of a two (2) inch top lift hot mix asphalt Grading SX, SP 64-22. All QC Quality Control testing is to be considered inclusive of costs. Traffic Control is to be included in the mobilization costs.
Bids will be opened in person at the City of Evans Community Complex at 9:00 am March 9th
