SIOUX FALLS, SD (KELO) -- A new street project will affect traffic on the east side of Sioux Falls this week. Starting Monday, East Arrowhead Parkway will be closed between Veterans Parkway and Six Mile Road so crews can add a turn lane from Arrowhead onto Hein Avenue. The project is expected to take one week. In the meantime, drivers will be detoured to 26th Street. Local traffic for residents and businesses will be maintained from the east.