From Walnut Grove Road to Macon Road Memphis, Shelby County, Tennessee
Alternative Q will include the construction of a new grade-separated interchange with Walnut Grove Road approximately 1,900 feet east of the newly constructed Wolf River Bridge (east of the Humphreys Boulevard intersection) and 2,500 feet west of the existing signalized intersection of Walnut Grove and Farm Road. The trumpet interchange is within the existing southern edge of the Walnut Grove Road right-of-way. This alternative provides Farm Road with right-in/right-out access to westbound Walnut Grove Road, while eliminating access to eastbound Walnut Grove Road. Travel speeds associated with the interchange/ramp system will be 20 mph. The interchange will have six-foot shoulders. The section from Walnut Grove Road to Mullins Station Road is to be constructed with a 220-foot right-of-way, four 12-foot traffic lanes (two in each direction), a 30-foot to 100-foot variable-width, depressed median, 12-foot outside shoulders (10-foot paved, two-foot grass), and six-foot paved inside shoulders.  From Walnut Grove Road to Mullins Station Road, the Selected Alternative would use an independent roadway concept, wherein the grade and alignment of the Parkway would vary to blend the roadway into the natural topography. From the Walnut Grove Road/Kirby Parkway interchange, Alternative Q will travel in a northerly direction while curving to the west and back to the east, intersecting the proposed Sycamore View Road Extension (a separate project) at a perpendicular angle. The extension will reach Farm Road and the Shelby Farms Visitor’s Center, allowing for direct access from Sycamore View Road and from Kirby Parkway at a signalized intersection. The alignment continues north, curving east then west, crossing north of a gas regulator station located within Shelby Farms, then east again before crossing the relocated Mullins Station Road at a slight angle. The signalized Mullins Station Road intersection will be realigned to eliminate an existing angle and provide turn lanes on all approaches. Alternative Q will then continue north along the existing alignment of Whitten Road to Macon Road. From Mullins Station Road to Macon Road, the Alternative Q right-of-way will be 106 feet, with four 12-foot traffic lanes, a 14-foot center turn lane, 10-foot outside shoulders, and curb and gutter on either side of the roadway. This section is to be constructed with five-foot sidewalks, one on each side of the roadway. A speed limit of 35 mph is proposed for Alternative Q; however, the road is designed for 40 mph.