(A) Streets and highways shall be graded to the full width of the right-of-way and brought to grades specified on plans, profiles, and cross-sections approved by the Board of Commissioners who shall receive one set of the plat plans as approved after review by the engineer and Executive Director. All street and highway improvements shall be constructed to the satisfaction of the Board of Commissioners after review by the County Engineer.
(B) Streets and highways shall be paved the following minimum widths:
Type of Street | Minimum Pavement Width (in Feet) Inclusive of Curb & Gutter | Minimum Pavement Width (in Feet) without Curb & Gutter |
Type of Street | Minimum Pavement Width (in Feet) Inclusive of Curb & Gutter | Minimum Pavement Width (in Feet) without Curb & Gutter |
Freeway (fully-controlled access) | (not applicable) | 38 x 2 |
Expressway (partially-controlled access) | 42 x 2 | 38 x 2 |
Freeway/expressway - service streets | 29 x 2 | 16 x 2 |
Arterial, urban collector or rural major collector - dual roadway | 28 x 2, plus 8 to 10-foot paved right-shoulder and 14-foot median | 24 x 2 plus 8 to 10-foot paved right-shoulder and 14-foot median (or 4-foot paved left-shoulder) |
Urban collector or rural major collector - single roadway | 62 (3-lane roadway with 10-foot paved shoulders) | 58 (3-lane roadway with 10-foot paved shoulders) |
Rural minor collector | 40 (3-lane roadway) | 40 (2 lanes with 8-foot paved shoulders) |
Residential collector | 40 | 36 (2 lanes with 6-foot paved shoulders plus 3-foot compacted aggregate shoulders) |
Minor residential district | 30 | 26 (2 lanes plus 3-foot compacted aggregate shoulders) |
Cul-de-sac | 30 | 26 (2 lanes plus 3-foot compacted aggregate shoulders) |
Rural road | (not applicable) | 22 (2 lanes plus 3-foot compacted aggregate shoulders) |
Marginal access | 26 | 22 (2 lanes plus 3-foot compacted aggregate shoulders) |
Private street | 24 | 20 |
(C) Street construction shall be in accordance with the Road Standard Specifications or any subsequent amendments thereto for locally-maintained roads and the Roadway Design Manual of the Indiana Department of Transportation for state-maintained roads.
(D) Rigid type pavement. Rigid type pavement may only be used in commercial and industrial zoning districts; residential shall require a waiver by the County Commissioners. Rigid type pavement shall consist of Portland cement concrete placed on a properly prepared subgrade conforming in all respect to the line, grade, thickness and typical cross-sections in the plans prepared by the subdivider and approved by the County Engineer and Plan Commission. Coarse aggregate for Portland cement concrete pavement shall be size No. 5L only, as defined in the standard specifications. Vibrating screeds or oscillating screeds will be permitted for finishing pavements provided the required finish and smoothness are obtained. All joints shall be sealed. Minimum design standards shall be according to the following table:
Arterial, Urban Collector or Rural Major Collector | Rural Minor Collector or Commercial Collector | Residential Collector | Local and all Other Streets | |
Controlled Wheel Load | 18,000 lbs. | 11,000 lbs. | 8,000 lbs. | 6,000 lbs |
Base Type I Granular | To be designed on the basis of traffic | 8" | 6" | 4" |
Concrete Uniform Design Thickness | To be designed on the basis of traffic | 8" | 7" | 6" |
Total thickness | To be designed on the basis of traffic | 16" | 13" | 10" |
(E) Flexible pavement.
(1) Flexible type pavement shall consist of an asphaltic concrete wearing course placed on suitable base and subbase courses on a properly prepared subgrade conforming in all respects to the lines, grades, thickness and typical cross sections in the plans prepared by the subdivider and approved by the Board of Commissioners and County Engineer or Town Board.
(2) Subbase and base material shall be placed in accordance with latest standards of the Indiana State Highway Department. Minimum design standards shall be according to the following table.
Arterial, Urban Collector or Rural Major Collector | Rural Minor Collector or Commercial Collector | Residential Collector | Local and all other Streets Type |
Arterial, Urban Collector or Rural Major Collector | Rural Minor Collector or Commercial Collector | Residential Collector | Local and all other Streets Type | |
Controlled wheel load | 18,000 lbs. | 11,000 lbs. | 8,000 lbs. | 6,000 lbs |
Subbase granular design thickness | To be designed on the basis of traffic | 6" | 6" | 4" |
Base Type I granular | To be designed on the basis of traffic | 6" | 4" | 4" |
Base asphaltic | To be designed on the basis of traffic | 3" | 2" | None |
Binder asphaltic | To be designed on the basis of traffic | 2" | 2" | 2-1/2" |
Surface asphaltic | To be designed on the basis of traffic | 1-1/2" | 1-1/2" | 1-1/2 " |
Total thickness | 18-1/2" | 15-1/2" | 12" | |
(F) Rural roads. All rural roads as defined herein shall have a minimum of eight inches of rock with side ditches. Subbase shall be at least four inches in depth using #2 rock or #5 rock with the base constructed of at least four inches of #53 rock. The intermediate course shall be a minimum of two and one-half inches of asphalt binder. The surface shall be a minimum one and one-half inches of asphalt or as directed by the Board of Commissioners.
(G) Where granular material of a quality equal to requirements for subbase material is placed for use as a construction the neat lines for subbase for the pavement may be left in place and be considered subbase for whatsoever part of the subbase area it occupies, and the existence of such materials outside those lines will not be considered subbase for whatsoever part of the subbase area it occupies, and the existence of such materials outside those lines will not be considered subbase or base or pavement surface. The subbase and base courses shall be constructed simultaneously, and in no case shall the subbase be used as a construction road.
(H) Alternate materials and methods may be used to take advantage of local material conditions providing the depth, the materials used and the construction methods produce a pavement which satisfies the design criteria set out by this chapter.
(I) When minor residential streets serve commercial or industrial development the Rural Minor Collector/Commercial Collector road specifications shall be required.
(J) (1) The subdivider shall provide for inspection by a registered professional engineer of all street and highway construction. Prior to start of construction, a time schedule estimating starting date and completion date of construction and stating the registered professional engineer in charge of inspection shall be submitted to the County Engineer, the Area Plan Commission and the Board of Commissioners. Should any change be made in the submitted time schedule from starting date to completion date, the change must be submitted in writing and to the same agencies.
(2) Upon completion, all requests for acceptance of streets for maintenance by the county must be accompanied by a certification by the registered professional engineer in charge that the streets were constructed in accordance with the plans and specifications approved by the County Highway Engineer, and the Board of Commissioners.
(K) (1) As a part of the Street Construction Plans there shall be compaction specifications submitted and included in the design specifications of the proposed streets. Upon review and approval of said Street Construction Plans the Certifying Engineer or Developer shall then be required to provide the subgrade compaction test results to the County Highway Engineer. Said compaction results must be submitted to the County Highway Engineer prior to submittal of the Request for Acceptance of Streets for Maintenance. The County Highway Engineer shall not recommend that the county accept the streets for maintenance until said results are provided, reviewed and deemed satisfactory.
(2) In the event that the results are not provided and reviewed prior to date of expiration of the irrevocable letter of credit, the Board of Commissioners may require that the developer submit an amount approved by the County Highway Engineer to be deposited in the County Road Donation Fund. Said amount shall be used for repairs of the streets within the development.
(BC Ord. 2006-05, passed 3-20-06; Am. BC Ord. 2012-05, passed 1-9- 12; Am. BC Ord. 2021-04, passed 1-11-21; Am. BC Ord. 2021-05, passed 1-11-21; Am. BC Ord. 2021- 06, passed 1-11-21)