SECTION 490 - COLD MILLING
490-1 DESCRIPTION. This work shall consist of the milling, shaping and removal of portions of
existing surfaces by a cold milling process, and subsequent cleaning, utilizing equipment and procedures meeting the requirements in this specification. The work shall consist of Miscellaneous Cold Milling or Production Cold Milling of bituminous or portland cement concrete as indicated in the contract documents and as shown on the plans.
490-2 Materials
490-2.01 Equipment. Milling machines shall be power operated, self-propelled machines capable of
removing the desired thickness of existing surfaces. The machines shall have sufficient power, traction and stability to accurately maintain depth of cut and slope. They shall be capable of producing a finished profile and cross slope to within 1/4 inch of that required and shall produce a uniform surface texture free from gouges and ridges greater than 3/8 inch in depth. The machines shall be equipped with a means to control dust and other particulate matter created by the cutting action. The machines shall have an integral loading system or sufficient equipment shall be provided to accomplish complete removal of milled material at a rate equivalent to the milling rate. Vacuum trucks, street sweepers or power brooms shall be used to clean the milled surfaces. The Engineer may disallow the use of power brooms in urban, residential or other sensitive areas if the dust raised by the broom is deemed by the Engineer to be objectionable.
490-2.02 Disposal of Material. Material removed during the milling process, including foreign debris
within or on the pavement, shall become the property of the Contractor and shall be disposed of at a site obtained by the Contractor.
490-3 Construction Details
490-3.01 General. Milling shall be performed at the locations and in accordance with the details
indicated on the plans.
490-3 02
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Sections 200 - 599 STANDARD SPECIFICATIONS (USC) January 1, 2026 Volume 2 When indicated on the plans, profile and cross slope shall be controlled by a taut reference string line. The reference elevation and string line shall be established by the Contractor and subject to the approval of the Engineer. Areas not accessible to the milling machine, such as around and/or adjacent to inlets, manholes, curbs and transverse joints on structures, may be removed by a small milling machine, handwork or other methods approved by the Engineer. All milled material, including that removed by other means, shall be immediately removed from the milled surfaces and adjacent surfaces. Surfaces shall be cleaned of all fines and dust prior to opening to traffic. The Contractor shall conduct operations in such a manner that dust is controlled and is not objectionable. Milled and adjacent surfaces shall be cleaned again, as directed by the Engineer, prior to the placement of tack coats, or pavement courses if traffic has been allowed on the milled surface and/or if more than 48 hours have elapsed since the initial cleaning. The Contractor shall maintain drainage at catch basins, according to the details shown on the plans, or in a manner approved by the Engineer. When working adjacent to traffic, the Contractor shall immediately remove material that is spilled on the traveled way. Milled surfaces to be overlaid with asphalt concrete shall be covered with at least a single course of asphalt concrete before the end of the paving season. Portland cement concrete overlays shall be completed over milled surfaces before the end of the paving season. Damage to milled surfaces resulting from traffic or other causes such as, but not limited to, raveling, fuel spillage or any contaminants which would inhibit bond, shall be repaired or remilled by the Contractor in a manner approved by the Engineer.
490-3.02 Production Cold Milling. Production cold milling of bituminous or portland cement surfaces
shall be performed in accordance with the details and at the locations indicated on the plans.
490-3.03 Miscellaneous Cold Milling. Miscellaneous cold milling of bituminous or portland cement
surfaces shall be performed in accordance with the details and at the locations indicated on the plans.
490-3.04 Production Cold-Mill Surface Planing. Production cold-mill surface planing of bituminous
concrete surfaces shall be performed in accordance with the details and at the locations indicated on the plans. When specified, the milling machine shall control the profile and cross slope with a moving reference at least 30 feet in length. The moving reference may be a floating beam, ski, or other suitable type such that the resulting milled surface is sufficiently even. In areas accessible to the milling machine, construct a milled surface to a maximum1/2 inch tolerance. If the pavement surface is not being constructed or has not been constructed to this tolerance based upon visual observation or upon riding quality, the Engineer may test the surface with a 15 foot straight edge or string line placed parallel to the centerline of the pavement and with a 10 foot straight edge or string line placed transversely to the centerline of the pavement on any portion of the pavement. Variations exceeding 1/2 inch will be satisfactorily corrected at no additional cost to the State.
490-4 METHOD OF MEASUREMENT. The quantity shall be measured as the number of square
yards of pavement surface milled in accordance with the plans and this specification. In no case will a deduction in area be made for minor unmilled areas due to catch basins, manholes, transverse joints, or minor low areas in pavements from the measured surface area that has been milled. Minor unmilled or low areas are those areas of 10 square yards or less.
490-5 BASIS OF PAYMENT. The unit price bid per square yard shall include the cost of furnishing all
labor and equipment necessary to complete the milling, including the removal of pavement by other means, the removal and disposal of milled material, the removal and hauling of milled material to a designated storage area when indicated in the contract documents and cleaning the resultant surface after milling. No payment will be made for additional cleaning that may be necessary just prior to placement
501-2 01
NEW YORK STATE DEPARTMENT OF TRANSPORTATION Sections 200 - 599 STANDARD SPECIFICATIONS (USC) January 1, 2026 Volume 2 of any overlaying pavement courses or tack coats. The cost of maintaining drainage shall be included in the price bid for work zone traffic control. The cost of providing tack coats, overlay courses, and temporary pavement wedges around drainage structures, manholes, valve boxes, bridge abutments and beginning and ends of milled pavement shall be paid for separately. Payment will be made under: Item No. Item Pay Unit 490.10 Production Cold Milling of Bituminous Concrete Square Yard 490.15 Production Cold-Mill Surface Planing of Bituminous Concrete Square Yard 490.20 Production Cold Milling of Portland Cement Concrete Square Yard 490.30 Miscellaneous Cold Milling of Bituminous Concrete Square Yard 490.40 Miscellaneous Cold Milling of Portland Cement Concrete Square Yard SECTIONS 491 THRU 499 (VACANT) Section 500 PORTLAND CEMENT CONCRETE
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