(A) Minimum cross-section table.
Type of Street or Public Way | Minimum Row to Be Dedicated | Minimum Dimensions |
Type of Street or Public Way | Minimum Row to Be Dedicated | Minimum Dimensions |
Urban Streets | ||
Arterial divided with median | 100 ft.+ | Dual 24 ft. pavement + V.F. curbs |
18 ft. median | ||
6 ft. tree bank/curb lawn | ||
5 ft. sidewalk | ||
1 ft. outside sidewalk | ||
Arterial undivided | 100 ft.+ | 62 ft. pavement |
(14 ft. center turn lane) | ||
10.5 ft. tree bank/curb lawn | ||
5 ft. sidewalk | ||
1 ft. outside sidewalk | ||
Collector | 66 ft. | 24 ft. pavement drive lanes |
16 ft. pavement park lanes | ||
30 ft. vertical face curbs | ||
5 ft. tree bank/curb lawn | ||
4.5 ft. sidewalks | ||
1 ft. outside sidewalk | ||
Minor | 66 ft. | 24 ft. pavement drive lanes |
7 ft. pavement park lane | ||
30 ft. vertical face curb | ||
6 ft. and 13 ft. tree bank | ||
4.5 ft. sidewalk | ||
1.0 ft. outside sidewalk | ||
Rural Streets | ||
Arterial divided with median | 100 ft.+ | Dual 28 ft. pavement (24 ft.+ 4 ft. pedestrian way) |
4 ft. inside shoulder | ||
10 ft. median | ||
8 ft. outer shoulder | ||
15 ft. to ditchline | ||
(5 ft. + 10 ft. easement) | ||
Collector | 100 ft.+ | Undivided |
70 ft. pavement | ||
(includes 14 ft. center turn lane and 2 at 4 ft. pedestrian ways) 8 ft. shoulder | ||
17 ft. to ditch line | ||
(7 ft. + 10 ft. easement) | ||
Collector | 66 ft. | 32 ft. pavement |
(24 ft. + 4 ft. pedestrian way) 6 ft. shoulder | ||
6 ft. to ditchline | ||
11 ft. backslope | ||
(5 ft. + 6 ft. easement) | ||
Collector | 80 ft. | 32 ft. pavement |
(24 ft. + 2 at 4 ft. pedestrian ways) | ||
8 ft. shoulder | ||
8 ft. to ditchline | ||
8 ft. backslope | ||
(+ 6 ft. easement - fill section) | ||
Minor | 66 ft. | 28 ft. pavement |
(24 ft. + 4 ft. pedestrian way) | ||
l ft. and 5 ft. shoulder | ||
8 ft. to ditchline 8 ft. backslope | ||
(B) Cul-de-sac streets designed to have one end permanently closed shall not exceed 500 feet in length. All cul-de-sac streets designed to have one end permanently closed shall terminate in a circular turnaround having a minimum right-of-way radius of 66 feet and a minimum back of curb radius of 47.5 feet or 45 feet for rural cross-section streets.
(C) Temporary termination of streets at the boundary of a subdivision that are intended to be extended at a later date and where more than four dwelling units have driveway access to such street, or when the nearest intersection to the boundary of the subdivision is greater than 200 feet, shall be accomplished with a temporary cul-de-sac in accordance with the standards set forth above or by construction of a temporary “T” turnaround having a crossbar paved width of at least 22 feet and a length of 60 feet, with the option subject to the approval of the Plan Commission and the Village Board.
(D) Unless necessitated by exceptional topography subject to the approval of the Plan Commission, the maximum centerline grade of any street or public way shall not exceed the following:
(1) Arterial streets: 6%;
(2) Collector streets: 8%;
(3) Local streets, alleys, and frontage streets: 10%;
(4) Pedestrian ways: 10%, unless steps of acceptable design are provided; and
(5) The grade of any street shall in no case exceed 10% or be less than 0.5%.
(E) Street grades shall be established wherever practicable so as to avoid excessive grading, the promiscuous removal of ground cover and tree growth, and general leveling of topography. All changes in street grades shall be connected by vertical curves of a minimum length equivalent in feet to 15 times the algebraic difference in the rates of grade for all major streets, and one-half this minimum for all other streets.
(F) (1) When a continuous street centerline deflects at any one point by more than ten degrees, a circular curve shall be introduced having a radius of curvature on said centerline of not less than the following:
(a) Arterial streets and highways: 500 feet;
(b) Collector streets: 300 feet; and
(c) Local streets: 100 feet.
(2) A tangent at least 100 feet in length shall be provided between reserve curves on arterial and collector streets.
(G) Where, on the date of enactment of this chapter, an existing dedicated or platted half street is adjacent to the tract being subdivided, the other half of the street shall be dedicated by the subdivider. The platting of half streets is not permitted.
(Prior Code, § 18.08)