City of Frisco Engineering Standards

Engineering Standards
Storage Length
Length of
Taper
Lane Width
Concrete Pavers per
Section 2.03.B.1.e
R
2
R
1
FIGURE 2.12: Typical Left Turn Lane Dimensions
3. Median Openings
a. Median openings shall accommodate all turning paths and crosswalks.
b. The width of mid-block median openings shall not be less than sixty feet (60’). They
may be greater than sixty feet (60’) where necessary to accommodate turning paths and
crosswalks subject to approval by the Director of Engineering Services.
c. Median openings shall not be less than seventy feet (70’) wide at divided high capacity
driveways (see Section 2.05.B.5).
4. The minimum distance to the first mid-block median opening along a Type A or B
thoroughfare that is immediately downstream from a Type A or B thoroughfare is shown in
Figure 2.13. This distance varies from three hundred fifty feet (350’) to six hundred feet
(600’), measured nose to nose, depending on the thoroughfare type and the type of mid-block
opening.
Section 2 – Thoroughfare Design Requirements May 2012 Page 2-22