(A) Minimum rights-of way shall be 50 feet in width; 60 feet in width where open ditches are provided.
(B) Roadway areas shall be cored to a depth of three inches for the full length of the road; lime or fly ash modification of soils to a depth of 12 inches is required. Lime or fly ash modification shall extend 12 inches beyond the edge of the aggregate roadway surface. Lime or fly ash modification shall be done in accordance with IDOT standards.
(C) Roadways shall have a well-compacted sub-base, achieved by rolling with a minimum six-ton roller to the approval of the County Engineer; a compaction test shall be provided certifying the adequacy of the subgrade. The compaction test must be performed by a geotechnical professional and approved by the County Engineer prior to placing any paving material.
(D) Roadway bases shall be comprised of eight inches of machine spread pugmilled CA-06 or Grade 8 placed in two four-inch lifts, each lift being compacted with a minimum six-ton roller to the approval of the County Engineer. A compaction test shall be performed certifying the adequacy of the roadway base in accordance with IDOT standards.
(E) Roadway street surfaces shall consist of an A-3 multiple course bituminous surface treatment, which is a primer coat; two separate applications of a bituminous cover coat material, a cover coat aggregate, each aggregate application shall be rolled with a minimum six-ton roller. All material shall be of the type, grade, size and rate approved by the County Engineer.
(F) Finished roadway surfaces shall be minimum of 28 feet in width with four-foot shoulders adjacent to the edge of pavement; The maximum/minimum grades of streets shall be in conformity with § 92.023(A).
(G) Curb and gutter. Where curb and gutter is installed, all streets shall be bounded by unreinforced concrete curb and gutters in conformity with the specifications illustrated in Figure 5. All other drainage structures shall be the type and size approved by the County Engineer.
(H) All road side ditches shall have a two-foot bottom with no greater than three to one front and back slopes and be a minimum of 18 inches in depth.
(I) The terminus of a dead end road shall have a cul-de-sac turnaround, having a minimum right-of-way radius of 50 feet and a minimum pavement radius of 40 feet.
(J) The entire right-of-way shall be cleared of all brush and trees unless previously discussed and approved by the County Engineer.
(K) Naming of private roads shall be approved by the 911 Coordinator, as well as being approved by the County Engineer.
(L) Street signs and signposts shall be of the type and specifications as required in § 92.026(B)(1) and (B)(2). All traffic control signs shall be of a type approved by the County Engineer.
(M) Responsibility for maintenance. The subdivider shall assume responsibilities for maintaining all streets including seeding; removal of earth, crushed stone or other debris from the pavement, curb and gutter and other drainage facilities, for the time periods indicated in § 92.062, that is, for two years after dedication of the street.
(1993 Code, § 92.09) (Ord. 2006-06, passed 6-21-2006)