City of Frisco Engineering Standards

Engineering Standards
E. Cost of Median Openings and Turn Lanes
1. Median openings, left-turn lanes, and right-turn lanes constructed for residential streets and/or
subdivision entrances not referenced on the Thoroughfare Plan shall be the responsibility of
the developer and shall be constructed to City (or TxDOT) standards and inspected by the
governing entity.
2. Median openings, left-turn lanes and deceleration lanes for multi-family and non-residential
developments shall be the responsibility of the developer and shall be constructed to City (or
TxDOT) standards and inspected by the governing entity.
3. If median openings, left-turn lanes, deceleration lanes or right-turn lanes are not constructed
at the time of development, the developer shall escrow funds for such future improvements
prior to final acceptance. The escrow amount shall include all costs for engineering,
inspection, and construction.
2.04 Alley Design
A. Alley Intersections
1. Alleys shall not intersect any Type A, B, or C thoroughfare nor any residential collector.
2. Alleys that are parallel to and share a common ROW line with a Type A, B, or C
thoroughfare or a residential collector shall turn away from that thoroughfare not less than
forty feet (40’) or one subdivision lot width (whichever is greater) from the cross street ROW
as shown in Figure 2.18.
3. Alleys shall intersect with a residential street so that the alley ROW line is not less than forty
feet (40’) or one subdivision lot width (whichever is greater) from the ROW of the nearest
cross street as shown in Figure 2.18.
Section 2 – Thoroughfare Design Requirements May 2012 Page 2-28