Agenda - 10-13-1999 - 3 - Laserfiche WebLink

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T.J. Dyer August 26, 1999 Page 2 Thoroughfare Plan The 1997 Transportation Plan for the Town of Hillsborough indicates the need for NC 86 and ; Old NC 86 to be widened to multi -lane facilities within the project vicinity. Trip Generation Based on the methodology of the ITE Trip Generation Manual (6th Edition), the proposed development is expected to generate approximately 35,367 trips per average weekday. The breakdown of entering and exiting traffic at peak hours is listed below. observations/Recommendations Given the magnitude of this development and its proximity to I40 and I -85, we recommend a complete Traffic Impact Analysis (TIA) be performed which identifies current land use proposals within the site, and addresses the capacity of the 1-40 / Old NC 86 interchange as it stands to be affected by the proposed development. Given the limited information available addressing land use, the location of the proposed driveway connections, and the lane geometry of these connections, it should be noted that the following traffic related comments are preliminary. Old NC 86 Access, Southern Drive Given the high traffic volumes expected on Old NC 86 and the function of Old NC 86 as a major north -south connector between 1-40 and the Town of Hillsborough, it appears a multi- lane _lan_e divided type facility is appropriate for Old NC 86 in the vicinity of the project. In order to provide full movement access onto Old NC 86 it will be necessary to comply-with the current Median Crossover Guidelines (June, 1998), should a divided type facility be implemented. With a 55 mile per hour speed limit posting, a minimum of 1,500 feet is required between median openings; with a 45 mile per hour speed limit posting, a minimum . of 1,000 feet is required between median openingi. This criterion should be considered when determining the final location of the proposed driveway connection onto Old NC 86. • We recommend the existing service road located approximately 1,400 feet north of the I -40 L Old NC 86 interchange and the proposed driveway be aligned. • Given the high traffic volumes associated with the site and its southernmost access connection, a multilane facility should be constructed (as a minimum) between the southern I-40 / Old NC 86 ramp terminal and the main development entrance. Old NC 86 Access, Northern Drive • We concur with the proposed location of the driveway located opposite Lafayette Drive. • We recommend providing a northbound right -turn lane on Old NC 86 to remove turning vehicles from the through movement. • We concur with the proposed southbound left -turn lane on Old NC 86.