I-285 @ SR 9 IN SANDY SPRINGS-BRIDGE SAFETY&OPERATIONAL IMP

complete

This is the PE phase of a project to widen the Roswell Road Bridge over I-285 from five lanes (two through-lanes in both directions and one center lane divided into two very short left-turn lanes) to six lanes (two through-lanes in both directions and two full length left-turn lanes). This extra width will provide dedicated left-turn lanes from Roswell Road to the I-285 entrance ramps in both directions and accommodate widening the through-lanes from 10 feet to 11 feet. A raised median will be installed in the direct vicinity of the bridge to improve safety and discourage dysfunctional movements. Both I-285 entrance ramps will also be widened from one lane to two lanes before the ramp meter to address the lack of storage. The existing gore location, as well as the number of lanes entering the interstate and the ramp meter timing, will be left unchanged.