ST9902-CS090416
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H. Stan Hall, P.E.
Dallas District
MEMORANDUM
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TO:
FROM:
H. Stan Hall. P.E. DATE: April 16. 2009
Dallas District
Maria G. Burke. P.E. /11..""< C ~ ~-<=c.
Design DIvIsion (-- 0'
Revised Schematic Layout
SUBJECT:
County: Dallas
Control: 0918-45-773
Highway: CS
Project: HP 2007 (193)
Limits: From Sandy Lake Road from N. Coppell Rd to S. Coppell Rd
We received the revised schematic and your response to DES review comments via
memorandum dated April 3, 2009. The responses are adequate and the schematic is approved
for further project development on condition that the following is addressed in the final PS&E:
Comment #9: Since the 8 ft trail is for the shared use of pedestrians, cyclists and other
non-motorized use; it should meet all the design criteria for shared use paths outlined in the
AASHTO Guide for the Development of Bicycle Facilities. The minimum paved width for a
two-directional shared-use path is 10ft. The 8 ft reduced width is only allowed under certain
conditions outlined there. Widths less than 10ft must be documented on Form 1002 as a
design waiver (Roadway Design Manual, Chapter 1, Section 2). Please either provide 10ft
wide shared used path or re-submit Form 1002 showing waiver for the shared-used path width.
Furthermore, towards the east end, you added the MBGF and the single guardrail terminal.
Please ensure that we are maintaining the clear 8 ft width.
There is no need to resubmit this schematic. Please ensure and appropriately address these
issues in the final PS&E.
For questions concerning the above comments. please contact me at (512) 416-2703 or
Radwan Dalu, P.E. at (512) 416-2685.
cc: File Copy
MAM Read File