(A) The street and alley layout shall provide access to all lots and parcels of land within the subdivision. Street jogs of less than 125 feet shall be avoided. Cul-de-sacs shall not exceed 500 feet in length, unless necessitated by prevailing conditions which create undue hardship, that hardship to be determined by the Commission upon adequate showing by the subdivider.
(B) Local streets shall be designed so as to discourage through traffic.
(C) Proposed streets shall be adjusted to the contour of the land so as to produce usable lots and streets of reasonable gradient.
(D) Certain proposed streets, where appropriate, shall be extended to the boundary of the tract to be subdivided so as to provide for normal circulation of traffic within the vicinity.
(E) Wherever there exists a dedicated or platted portion of a street or alley adjacent to the proposed subdivision, the remainder of the street or alley shall be platted to the width herein prescribed within the proposed subdivision, unless the Commission finds it unnecessary.
(F) Reserve strips controlling access to streets shall be prohibited except where their control is definitely placed with the Board under conditions approved by the Plan Commission.
(G) Widths of street rights-of-way shall conform to the widths specified in Appendix B, Exhibits 1 and 2, at the end of this chapter. These widths may be increased or decreased or varied in usual circumstances by the Plan Commission.
(H) Half streets shall not be permitted.
(I) No dead-end street shall be permitted where the same is in conflict with the Master Plan. Temporary dead-end streets will be permitted where the approved primary plat shows that the street will be extended to conform to the provisions of this chapter and/or to provide access to adjacent property where deemed necessary by the Commission to provide for adequate flow of future traffic, provided the length of the dead-end shall be not greater than 250 feet. A circular right-of-way in excess of the required street right-of-way at the termination of a dead-end street shall not be required.
(J) Subdivisions that adjoin or include existing streets that do not conform to the required widths shall dedicate the adequate width along either side or both sides of the street so the street shall be in conformity with all provisions of this chapter.
(K) Streets shall be laid out so as to intersect as nearly at the right angles as possible.
(L) If the smaller angle of intersection of two streets is less than 60 degrees, the radius of the arc of the intersection of the property lines shall be as deemed advisable by the Plan Commission.
(M) (1) At the intersection of two streets, the property line corners shall be rounded by arcs with radii of not less than 20 feet or radius of the arcs.
(2) When one or more of the streets involved in an intersection is a limited access street, highway, thoroughfare, boulevard, or parkway, the foregoing minimum standards may be increased by the Commission.
(N) At the intersection of a street with an alley, the property line corners shall be rounded by arcs with radii of not less than 15 feet or radius of the arcs.
(O) Intersection of more than two streets at one point shall be avoided.
(P) Where parkways or special types of streets are involved, the Plan Commission may apply special standards to be followed in the design of the parkways or streets.
(Q) Whenever the subdivision contains or is adjacent to a railroad right-of-way or a highway designated as a “limited access highway” by the appropriate highway authorities, provision shall be made for a marginal access street, or a parallel street at a distance acceptable for the appropriate use of the land between the highway or railroad and the streets.
(R) Horizontal visibility on curved streets and vertical visibility on all streets shall be maintained along the center lines as specified in Appendix B: Exhibit 3, found at the end of this chapter.
(S) Horizontal curvature measured along the centerline shall have a minimum radius as specified in Appendix B: Exhibit 1, at the end of this chapter.
(T) All changes in grade shall be connected by vertical curves of sufficient radii to provide smooth transitions and required sight distances.
(U) Between reversed curves on all streets, there shall be a minimum tangent as specified in Appendix B: Exhibit 1 at the end of this chapter.
(V) Maximum grades for streets shall be as specified in Appendix B: Exhibit 3 at the end of this chapter.
(W) The minimum grade of any street gutter shall not be less than 0.25%.
(X) No street shall have a name which will duplicate or so nearly duplicate as to be confused with the name of an existing street within the city; unless a proposed street is an extension of or in alignment with existing streets, in which case the duplication shall be mandatory. In no instance shall any street name include the word North, South, East or West unless it denotes that geographical direction.
(Y) Alleys shall be discouraged in residential areas but shall be included in commercial and industrial areas where needed for loading and unloading or access purposes; and, where platted, shall be at least 20 feet in width.
(Z) Dead-end alleys shall be avoided where possible, but, if unavoidable, shall be provided with adequate turnaround facilities at the dead-end, as determined by the Plan Commission.
(Ord. 466, § 4-7-3, passed 5-11-98) Penalty, see § 151.999