Canton Avenue

Canton Avenue is a street in Pittsburgh's Beechview neighborhood which is the steepest officially recorded public street in the United States.
Canton Avenue is long and is claimed to include a 37% grade long. The Guinness Book of World Records uses a 10m section to define the world's steepest street, currently held by Baldwin Street, in Dunedin, New Zealand, with a gradient of 34.8%. This record is disputed; Pittsburgh news and international media have claimed Canton Avenue is the steepest street in the world. The United States record is also disputed, as Bradford Street in San Francisco includes a 39% grade nine meters long and Waipio Valley Road has sections as steep as a 45% grade. Additionally, the steepest paved mile by average and maximum grade is Lincoln Gap, Vermont with 15% and 25% respectively.
In March 2016 Canton Avenue was the subject of a commercial, featuring freeskier Bene Mayr, snowboarder Heikki Sorsa, downhill mountain biker Aaron Gwin, and racing driver Mattias Ekström for the Audi Quattro A4 automobile.