City of Frisco Engineering Standards

Engineering Standards
ROW
Street
15' Min. R
ROW
20' Alley
Taper
16' Pavement Width
5' x 15' clip
18' ROW Width
12' Pavement Width
FIGURE 2.21: Alley to Street Intersection
D. Alley Length – Alleys shall not exceed eight hundred feet (800’) in length without an
intermediate connection to a residential street.
E. Alley Pavement Thickness – See Section 3 of the Engineering Standards for alley subgrade and
pavement design requirements.
F. Alley as Fire Lane – An alley that also serves the purpose of a fire lane shall be constructed to the
standards of a fire lane as required by the Fire Department. These standards include, but are not
limited to, a minimum pavement width of twenty four feet (24’) and a minimum radius of alley
pavement of twenty feet (20’) at street intersections.
G. Rear Alley Frontage – The minimum alley rear frontage shall be twenty feet (20’).
H. Alley Visibility Obstructions
1. No fence, wall, screen, sign, structure, landscaping rock greater than four inches (4”) in
height, or foliage of hedges, trees, bushes, or shrubs shall be erected, planted or maintained in
any alley ROW.
2. Foliage of hedges, trees, bushes, and shrubs planted adjacent to the alley ROW shall be
maintained by the property owner such that the overhang or encroachment shall be no less
than fourteen feet (14’) above the alley surface and no less than one foot (1’) outside the edge
of the pavement.
Section 2 – Thoroughfare Design Requirements May 2012 Page 2-32