Roswell officials will cut the ribbon Thursday, May 3, to celebrate the completion of the Sun Valley Drive Extension, a $4.3 million traffic-relief project that gives motorists a new way to go between Mansell Road and Alpharetta Highway.

The ceremony is to begin at 10:30 a.m. at the new roundabout at the Warsaw Road Extension and Finley Drive/Timbercreek Circle. Parking will be available at the Walmart.

The project extends the existing Sun Valley east from Alpharetta Highway to Warsaw, where a new, single-lane roundabout was built at the entrance to the Creekside at Mansell and Regency at Mansell neighborhoods, officials said. Drivers can then follow Warsaw south to Mansell.

The extension is a “complete street” with 11-foot travel lanes, 4-foot bicycle lanes, 5-foot sidewalks on the south side of the street, and an 8-foot multi-use path on the north side. Vertical Earth Inc. was the contractor. Funding was provided by a Roswell bond issue approved by voters in November 2012, impact fees and the city’s general fund.