After the effective date of this Chapter, all streets, except those classified as alleys, shall be constructed with curbs and guttering of Portland Cement Concrete.
(A) Those streets classified as Arterial, Industrial, Local Commercial, or Collector Commercial, shall be constructed with a vertical combination curb and gutter in accordance with the Standard Specification Plan Sheets, the dimensions depicted thereon, and the IDOT Standard Specifications.
(B) Those streets classified as Land Access Residential, Local Residential or Collector Residential, may be constructed with either a vertical combination curb and gutter in accordance with the Standard Specification Plan Sheets, the dimensions depicted thereon, and the IDOT Standard Specifications, or with a mountable curb and a V-type gutter in accordance with the Standard Specification Plan Sheets, the dimensions depicted thereon, and the IDOT Standard Specifications.
(C) Curb and/or gutter may be constructed either integrally or separately in conjunction with Portland Cement Concrete pavement.
(1) If constructed separately, the gutter flag shall be "tied" to Portland Cement Concrete pavement with #4 reinforcing bars at least thirty (30) inches long and spaced at thirty (30) inch centers.
(D) Contraction joints and expansion joints shall be installed in the curb, or curb and gutter, in prolongation with joints in adjacent Portland Cement Concrete pavement or base course, except that dowel bars shall not be required in contraction joints.
(1) Contraction joints, when sawed or template formed, shall be sealed in accordance with IDOT Standard Specifications.
(E) When curb and gutter is constructed adjacent to flexible pavement, a one (1) inch expansion joint shall be installed at points of curvature for short radius curves and at construction joints.
(1) Contraction joints shall be placed between expansion joints at a distance not to exceed twenty-five (25) feet.
(F) All expansion joints shall be constructed with a minimum one (1) inch thick preformed expansion joint filler conforming to the cross section of the curb and gutter and shall be provided with a one and one-fourth (1 ¼) inch diameter by eighteen (18) inches long, coated smooth dowel bar conforming to standard specifications.
(1) Said dowel bar shall be fitted with a cap having an inched top that will provide a minimum one (1) inch of expansion.
(G) Construction joints constructed in curb and gutter adjacent to Portland Cement Concrete pavement and Portland Cement Concrete base course, shall be provided with #4 deformed steel tie bar at least thirty (30) inches long, and placed on nine (9) inch or more centers with a minimum of two (2) bars per joint.