(A) General references. It is intended that all public streets shall be constructed in accordance, as far as applicable, with the most recently adopted edition of the State of Illinois, Department of Transportation, Standard Specifications for Road and Bridge Construction, including current Highway Standards, Special Provisions, and Supplemental Specifications as issued by said Department. These shall be referred to as the State Specifications for Road and Bridge Construction.
(B) Subgrade. The subgrade of all public streets shall be prepared in accordance with Section 300 of the State Standard Specifications for Road and Bridge Construction. It is required that the soil composing the subgrade have a minimum soil support value of 3.0 as determined by the IBR (Illinois Bearing Ratio) Test procedures used by the Illinois Department of Transportation. When, in the opinion of the Village Engineer, evaluation of the suitability of the subgrade to support the proposed pavement is warranted, a competent Soils Engineer approved by the Village Engineer and engaged by the developer at his or her expense shall perform the necessary soil tests to insure that a stable subgrade as specified is being provided.
(C) Design of pavement: procedure.
(1) The required thickness of the pavement shall be determined in accordance with the current Illinois Department of Transportation Bureau of Local Roads and Streets, "Administrative Policies: Flexible Pavement Design for Local Agencies (Attachment 5-8L) or Rigid Pavement Design for Local Agencies (Attachment 5-8M).
(2) The anticipated traffic volumes, the composition of the traffic, and the subgrade support strength provided by the roadbed soils shall be considered in the design of the pavement. This information is subject to the review and approval of the Village Engineer.
(3) Village minimum design criteria. Not less than the minimum requirements listed below shall be permitted in the design of streets.
STREET CLASSIFICATION | MINIMUM STRUCTURAL NO. (dt) |
Primary or Major Street | |
*ADT over 15,000 | 5.5 |
*ADT over 7,000 - 15,000 | 5.0 |
*ADT under 7,000 | 4.0 |
Secondary or Collector Street | 3.3 |
Minor or Local Street | 2.7 |
Cul-de-Sac | 2.7 |
Industrial Park Streets | 3.5 |
*Average Daily Traffic anticipated ten years beyond completion of subdivision.
(D) Minimum pavement thickness requirement. For flexible pavements, the minimum requirements for surface course, base course, and subbase course shall be in compliance with those given in Figure 5-4, Minimum Thickness and Material Requirements in the Attachment 5-8L and in Figure 3-1, Minimum Structural Design Requirements in the Attachment 5-8M defined previously in this section.
(E) Review of pavement design. The village shall be furnished with copies of the soils report when a soil support IBR value of three or greater is used in the pavement design, a list of proposed street classifications, the anticipated traffic volumes which will be generated, and traffic factors based on preceding data. The Village Engineer shall review this design information and report the evaluation of same to the Plan Commission and/or Village Board prior to their consideration of the Engineering Plans.
(F) Stage construction requirement for bituminous pavements. For subdivision streets, the installation of the final one and one-half inch of bituminous concrete surface of the proposed pavement shall be delayed for one winter. After May 1st of the year following the initial construction of the pavement or a later year mutually agreed upon between the owner and Village Engineer, the contractor and the Village Engineer shall inspect and mark all distressed or damaged areas. These areas shall be removed and repaired to the satisfaction of the Village Engineer. The entire surface of the existing pavement shall then be cleaned; primed at a minimum rate of 0.05 gallons per square yard; sanded, if the street is open to traffic, at the minimum rate of two pounds per square yard; and surfaced with the final layer of bituminous concrete as required.
(G) Materials inspection.
(1) Subgrade compaction and all materials incorporated into the roadway section shall be tested for compaction when being placed by a competent testing laboratory engaged by the owner at his or her expense. Tests shall be made in compliance with current state standard testing recommendations, except that plant inspectors will not be required in concrete or asphalt plants continuously during production provided plants have previously been approved for furnishing materials by the Illinois Department of Transportation. However, one random test shall be made daily on all material used. Results of all tests conducted shall be forwarded to the Village Engineer for his review and approval. Work will not be accepted without the test results being first submitted to the village.
(2) The owner shall provide a pavement core for every 1,000 square yards of pavement to determine the thickness, strength and/or density of the pavement when requested by the Village Engineer, to determine their compliance with the contract specifications.
(H) Protective coating application. All concrete pavement in the village shall receive a protective coat regardless of the time of the year constructed in accordance with applicable portions of Section 420.21 and 503.19 of the State Standard Specifications for Road and Bridge Construction.
(Ord. 07-57, passed 12-17-2007)