MEMORANDUM

To     : Board of County Commissioners

From : Keith A. Browning, P.E., Director of Public Works/County Engineer

Date  : November 10, 2008

Re     : Consider approval of 45-mph design speed for 31^st Street Concept Study

During this morning’s joint City/County commission work session, there was some discussion on design speed for an improved 31^st Street from Haskell Avenue to Route 1057.  Our consultant, Wilson & Co., needs this information to complete the concept study.

In the County portion, from O’Connell to Route 1057, it is recommended to stay with a 45-mph design speed.  We do not plan to design or construct this portion for several years.  It seems prudent to assume a 45-mph design speed for concept study purposes.  The design speed could be reduced in the future during final design if deemed appropriate at that time.  If we assume a slower design speed now, and act to acquire right-of-way accordingly, we will likely not be able to increase design speed without acquiring additional right-of-way. 

The Community Steering Committee recommended a 45-mph design speed.  It also was the clear choice in the public survey.

Wilson & Company will attend the BOCC meeting to answer questions and provide input.

Action Required: Discuss and determine an appropriate design speed for completion of the 31^st Street concept study.