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11.G.1. CR -512 — PROPOSED ALIGNMENT AND TYPICAL SECTIONS — MASTELLER & MOLER, INC. The Board reviewed a Memorandum of August 13, 1997: TO: James Chandler County Administrator THROUGH: James W. Davis, P.E. Public Works Directoor"I", FROM: Roger D. Cain, P.E., County Engineer SUBJECT: CR 512, Proposed Alignment and Typic DATE: August 13, 1997 DESCRIPTION AND CONDITIONS The Board of County Commissioners approved a contract with Masteller & Moler, Inc. for the design of CR 512 from Roseland Road to I-95. The consultant has prepared a preliminary design report listing four alternatives for the alignment and typical sections at various points in the roadway. This report is presented to the Board for their approval. The consultant and staff recommend Alternate #3 at this time for the section of the proposed roadway between CR 510 and Roseland Road. That portion of CR 512 from CR 510 to I-95 is still under consideration and discussion between the consultant and County staff for the selection of an appropriate typical section and alignment. Staff is bringing this to the Board in order to get the Boards approval of the alignment along sensitive areas where the alignment comes close to County lands which were bought for conservation purposes and where sensitive environmental areas are found along the roadway. Staff believes that the consultant has developed an alignment and section that will have the least impact on the sensitive environmental areas and surrounding property owners and still accomplish the purpose of providing a safe and efficient design. The alignment for that portion between CR 510 and Roseland Road essentially follows the existing alignment with constructing new lanes on both sides of the existing roadway, removing the existing road, and the development of a curb and gutter section from CR 510 through the bridge to Roseland Road, this provides the advantage of not requiring additional right-of-way, but will require the purchase of land for a stormwater treatment pond, however, there does appear to be vacant land available for this purpose in the vicinity where needed. ALTERNATIVES ANALYSIS Alternative No. 1 is to approve the alignment and typical sections for CR 512 between Roseland Road and CR 510 presented as Alternate No. 3 by the Consultant. Alternative No. 2 is to request that further study be done and another alternate be provided or a different alternate chosen. RECOMMENDATIONS Staff recommends Alternative No. 1. Staff recommends the Board of County Commissioners accept the consultants proposal of Alternate No. 3 as the preferred alignment and typical section for CR 512 between Roseland Road and CR 510 and direct the Consultant to proceed with the next step of design for the roadway in this area. Chairman Eggert asked for a clarification as to the recommendation of Alternate #1, proposing "alignment" No. 3, and Director Davis responded that was correct. AUGUST 26,1997 21 BOOK 1 U� PA6E 3 �7