The Burnside Bridge will close to motor vehicle and river traffic on Saturday, June 6 from 7 a.m. until 2 p.m. for the Portland Rose Festivals Grand Floral Parade. TriMet bus lines 12-Sandy, 19-Glisan and 20-Burnside will be detoured across the Steel Bridge during the bridge closure. Bridge sidewalks will remain open. Alternate river crossings when the Burnside Bridge is closed include the Hawthorne and Morrison bridges.