The proposed project would construct a grade-separated interchange at the existing at-grade intersection of SR 316 and SR I 1 in Barrow County. The proposed grade separation will include provision of full interchange providing access to and from SR 316 to SR 11. Interchange will be designed to accommodate the future widening of SR 316 from existing two general-use lanes in each direction to three lanes including a barrier separated high occupancy vehicle lane in each direction. SR 316 currently provides four 12-foot travel lanes (two in each direction) separated by a 44 - foot grassed median. The existing right-of-way is approximately 300 feet wide. The roadway has a 10-foot right shoulder and a six-foot left shoulder with rural drainage. SR 11 currently provides two 12-foot travel lanes with four-foot shoulders and rural drainage. The existing right-of-way is approximately 100 feet wide. The existing intersection with SR 316 is signalized. Project CSNHS-0008-00(430) would construct a full diamond interchange at the existing atgrade signalized intersection of SR 316 and SR 11. Proposed ramp heads would be spaced 700 feet apart. Improvements to SR 11 would begin approximately 0.20 mile south of the existing SR 316/SR 11 intersection and continue northerly along SR 11 for a total length of approximately 0.39 mile. SR 11 would taper down to a two-lane section to match existing typical section at project terminals. In order to accommodate the 2032 design year traffic the bridge carrying SR 11 over SR 316 would require a six-lane bridge providing two through lanes in each direction plus two left turn lanes. However, at this time the Department proposes to design a four-lane bridge carrying SR 11 over SR 316 providing one through lane plus left turn lane in each direction. The proposed improvement would operate at an acceptable level of service (LOS) until the year 2022 at which point it would operate at an unacceptable LOS. The proposed right-of-way would vary from 100 to 140 feet. Revised Project Description: Full diamond Interchange concept was revised to a tight urban diamond interchange. Extension of project limits along SRI 1, north of SR 316, by approximately 1,120 feet. New access road B proposed in the northwest quadrant.
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