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06th --Avenue S.W., south of 23rd Street S.W. The County Thoroughfare Plan designates 6th Avenue S.W. south of 23rd Street S.W. as a local roadway with a minimum right- of-way width of 60'. Currently, a 60' right-of-way exists for 6th Avenue S.W., south of 23rd Street S.W. Therefore, no additional right-of-way is required for this portion of. 6th, Avenue S.W. *23rd Street S.W., 12th Avenue S.W. and 12th Road S.W. (Highland Drive) The County Thoroughfare Plan designates 23rd Street S.W., 12th Avenue S.W. and 12th Road S.W. as collector roadways with a minimum right-of-way width of 801. Currently, an 80' right- of-way exists for 23rd Street S.W., 12th Avenue S.W. and 12th Road S.W. Therefore, no additional right-of-way is required for 23rd Street S.W., 12th Avenue S.W. and 12th Road S.W. 5. STORMWATER MANAGEMENT: The Conceptual Stormwater Management Plan has been approved by the Public Works- Department, and corresponding Type "A" and "B" Stormwater Permits may be issued for the project as the applicant submits for formal preliminary PD and land development permit review. -and: approval. 6. GOLF CART CROSSINGS: The applicant has proposed two golf cart :crossings, one for 6th Avenue S.W. and one for 23rd Street S.W. Staff has expressed concerns about the proposed crossings from the outset of the development review process (pre -application conference). Public Works Department staff have determined that one or more of five methods (or possible combinations of .the methods) may be used for the provision of the cart crossings. (Please -see Attachment #4.) These methods are: - 1. Below -grade underground tunnels 2. Above -grade overpasses 3. At -grade, electronically signalized mid -block crossings 4. At -grade, electronically signalized crossings at street intersections 5. At -grade, non -electronically signalized, mid -block crossings The project site's groundwater of below -grade tunnels. Thus, from consideration by staff. levels preclude the development Option # 1 has been eliminated The applicant has proposed at -grade, non -electronically signalized, mid -block carr crossings (Option- #5). The applicant's proposal is contained in attachment 4a. Staff does not recommend approval of such crossings given the safety conditions and concerns relating to cart crossings of collector roadways. Staff's primary recommendation is that the.applicant provide above -grade (overpass)' golf cart crossings (Option #2). It is staff's position that grade separated crossings are preferred due to concerns of safety for general vehicular traffic and golf course users. Sixth Avenue S.W. and 23rd Street S.W., the roads where the proposed cart crossings will located, are both designated as collector roadways on the county's thoroughfare plan, and each roadway serves significant area traffic. Sixth Avenue S.W. extends north -to -south and feeds local traffic to the nearby Highlands Elementary School. Twenty-third Street S.W. extends east -to -west and serves as the main feeder roadway into and through the Vero Beach Highlands Subdivision from U.S. #1 and 17th Street S.W.... 43 DEC 17 1991 BOOK 8b �`s�01 s