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(i) The length, widths and shapes of blocks shall be determined with regard to provision of adequate building sites suitable to the special needs of the type of use contemplated. (j) The length of residential blocks shall generally not exceed 450 feet in length nor wider than 240 feet. (k) Walks or pedestrian ways at a mid -block point may be required when determined to be essential by the agent to provide circulation or access to schools, playgrounds, shopping centers, etc. (1) The use of access control strips except for reasons of traffic safety shall be discouraged. (m) No street intersections shall include more than four street approaches. (n) Where two streets intersect a common street, the minimum distance between their rights-of-way shall be no less than 250 feet measured along the centerline of such common street. Should the two streets be a low volume local street with average daily traffic less than 1,500 vehicle trips per day, the minimum spacing between streets entering from opposite sides of the major street should be no less than 125 feet. Sec. 33.1-43. Rights-of-way and easements. (a) Unless otherwise approved by the agent, streets and street widths shall be designed in accordance with the Traditional Neighborhood Design provisions contained within the Virginia Department of Transportation's Subdivision Street Design Guide, as last amended, and the City of Portsmouth Master Transportation Plan. (b) All dead-end streets, designed to be so permanently, shall terminate in a circular turnaround having a minimum right-of-way as approved by the city engineer. Unless future plans call for the creation of a cross street, a "T" -shaped turning space shall be avoided. (c) Temporary dead-end streets (streets carried to boundary of tract for future extension of adjoining property) may be provided with a "T" -shaped turning space in the place of the required turning circle. (d) Easements across the entire length of lots, even if a part of the lot is underwater or part of a natural watercourse, or centered on rear or side lot lines, shall be provided for utilities and surface drainage where necessary and shall be at least 12 feet wide. The plat shall clearly state that it is the obligation of abutting property owners to keep all drainage ditches open along said easements. (e) In the event streets in a subdivision will not be constructed to meet the standards necessary for state street maintenance moneys to be paid to the city, the agent may require that the subdivision plat and all approved deeds of subdivision, or similar instruments, contain a statement advising that the streets in the subdivision do not meet state standards and will not be maintained by the city. In addition, the developer shall provide a financial commitment in the form as required by section 33.1-49 to provide for such street maintenance until such time as the city releases said commitment.