Streets (and alleys, where provided) shall be completed to grades shown on plans, profiles and cross-sections provided by the subdivider and prepared by a registered professional engineer and approved by the Commission.
(A) The streets shall be graded, surfaced and improved to the dimensions required by the cross-sections and the work shall be performed in the manner prescribed in Standard Specifications for the Indiana Department of Highways, latest issue (hereinafter referred to as the “standard specifications”). A copy of the current standard specifications is on file in the office of the County Area Planning Department.
(B) Residential streets shall be surfaced to a minimum width of 26 feet (unless otherwise noted) measured back to back of curb. Streets classified as “arterial” or “feeder” in the Thoroughfare Plan, as set forth in the Thoroughfare Plan Code, shall be surfaced to a minimum width of 36 feet. (Curb and gutter is added to the minimum surface; see § 155.068 of this chapter.) Residential streets in rural subdivisions shall be surfaced to a minimum width of 20 feet, and the surface shall match the type of surface of the connecting or intersecting public street. The Commission may require the subdivider to provide street surfacing on streets which are proposed to be extensions of existing paved streets, and which exceed the minimum dimensions set forth above, to the full width of the existing paved street. Alleys shall be surfaced to their full width. Cul-de-sac turn-around shall be paved to a diameter of 76 feet.
(C) The sub-grade shall be prepared in compliance with § 207 of the standard specifications.
(D) The sub-base, where required, shall be prepared in compliance with § 304 of the standard specifications. Special subbase drainage in areas of cuts, swales and fills shall be as set out in the approved plans and specifications.
(E) The street surface shall be of portland cement concrete materials and construction shall be in accordance with § 501 of the standard specifications and division (E)(1) below. Hot asphalt concrete materials and construction shall be in accordance with § 403 of the standard specifications and division (E)(2) below. In the case of a proposed alternative method, discrepancy, omission or duplication in the required specification standards, the decision of the County Highway Supervisor or respective town council shall be sought and considered final.
(1) Rigid type pavement (portland cement concrete).
(a) Minimum design characteristics of street pavement shall be as follows:
1. Six percent air-entrained;
2. Twenty-eight day compressive strength = 4,000 p.s.i., 28-day flexural strength = 550 p.s.i.; and
3. Thickness to conform to the following schedule:
Thickness | |||
Residential | Collector/Feeder | Arterial | |
Aggregate | Subject to review by the County Highway Supervisor or respective town council | 4" | 4" |
Concrete | 6" | 7" | 8" |
(b) Portland cement concrete pavement shall be in accordance with § 501 of the standard specifications. In addition, the following shall govern and be met.
1. The subgrade shall conform to §§ 501.05 and 207 of the standard specifications. Subgrade shall be moist but not muddy at the time the concrete is placed. If required, it shall be sprinkled, but the method of sprinkling shall be such that mud or pools of water will not be formed.
2. Subbase, if required, shall meet the above minimum thickness requirements and conform to § 304 of the standard specifications.
3. Weakened plane or dummy transverse contraction joints shall be placed not to exceed 20-foot spacing. A transverse contraction joint shall be placed at every catch basin and manhole in line of pavement. The location of manholes and the like in the pavement shall determine the exact location of joints. All joints must extend throughout side strips to full width of pavements. Transverse contraction joints will be a groove and conform to § 501.04 of the standard specifications.
4. Whenever the width between forms of the pavement under construction is greater than 13 feet, longitudinal joints shall be constructed so as to divide the pavement into strips not to exceed 13 feet each. Work shall conform to § 501.14 of the standard specifications.
5. Expansion joints, with approved dowel bar assembly, shall be placed at intersections where shown on the plans and shall conform to § 501.15.
6. Concrete shall be machine finished except on widened portions, intersections or other places where hand finishing will be permitted if authorized. Finishing machines or vibrating strike-boards of design other than as specified in the standard specifications will be permitted only if work of equal quality as set out in these specifications is obtained. Authorization prior to construction is required. Work shall conform to § 50.1.15 of the standard specifications.
7. Curing with approved impervious membrane or sealing compounds shall be required, conforming to § 501.17 of the standard specifications.
(2) Hot asphalt concrete pavement.
(a) Minimum design characteristics of street pavement shall be as follows; thickness to conform to the following schedule:
Thickness | |||
Residential | Collector/Feeder | Arterial | |
Aggregate subbase | Subject to review by the County Highway Supervisor or respective town council | 4" | 4" |
Base | 4" | 6" | 8" |
Binder | 2" | 2" | 2" |
Surface | 1" | 1" | 1" |
Total asphalt | 7" | 9" | 11" |
(b) Asphalt pavement shall be in accordance with § 403 of the standard specifications. In addition, the following shall be met.
1. The subgrade shall conform to § 403 of the standard specifications.
2. Subbase, if required, shall meet the above minimum thickness requirements and conform to § 403 of the standard specifications.
3. Base, binder and surface coarses shall meet the above minimum thickness requirements and conform to § 403 of the standard specifications.
4. Seal costs, prime costs and tack costs shall conform to §§ 403 and 407, 408 and 409 (as applicable) of the standard specifications.
(F) Samples for testing purposes shall be taken as required by the appropriate section of the standard specifications. All tests shall be performed in accordance with the appropriate section of the standard specifications. All testing shall be performed by a certified agency approved by the respective town council if the plat of the subdivision is proposed to be located in a town, or the County Highway Supervisor if the plat is proposed to be located in the unincorporated territory. All testing costs shall be paid by the developer. A complete certified copy of all records shall be provided to the town council or the County Highway Supervisor, as the case may be. The town council or County Highway Supervisor reserves the right to core the pavement before acceptance.
(G) Prior to placing the street and alley surfaces, adequate subsurface drainage pipe, when required, shall be coated corrugated pipe or a similar type not less than 12 inches in diameter approved by the Commission. Upon the completion of the street and alley improvements, plans and profiles as built shall be filed with the Commission.
(H) No streets will be accepted until after the plat of the subdivision has been recorded in the County Recorder’s office.
(I) All unsightly and objectionable materials shall be removed from the right-of-way before acceptance. All trees, brush and stumps shall be removed from the edge of pavement to the back of the side ditch slope. In no case will trees be permitted closer than six feet to the edge of the road surface. The entire right-of-way shall be in neat and presentable condition.
(J) All work must be acceptable to and meet all the requirements of the town council or County Highway Supervisor, as the case may be, prior to acceptance by the town council or Board of County Commissioners. Upon the completion of all improvements and installations as required by this chapter, the developer shall furnish the respective town council if the plat is proposed to be located in a town, or the Board of County Commissioners if the plat is proposed to be located in the unincorporated territory, with the proper bonds and an engineer’s certification that said improvements and installations have been constructed, installed, and completed in compliance with the requirements of this code. In addition, a letter signed by the County Highway Supervisor shall be presented to the Board of County Commissioners, stating they find the improvements to have been constructed, installed and completed in compliance with the requirements of this chapter, if such is the case.
(K) Upon completion of the streets, a minimum of two sets of as-builts plans and profiles shall be filed with the Commission.
(Ord. passed 6-5-1991; Ord. 1995-1, passed 6-5-1995; Ord. 2001-9, passed 7-9-2001)