With cars flowing through and around its new roundabout, Flowery Branch is now looking at improving one of the streets that shoots off the traffic circle. A study is planned for often-narrow and primarily residential Mitchell Street, which runs from Spring Street downtown to the City Park overlooking Lake Lanier. “This will be the first look at how (the city) could lay out sidewalks, landscaping and stormwater (drainage)” along the stretch and the impacts it would have on private property, said John McHenry, community planning director.