List of steepest roads and streets

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This article lists the sections or streets and roads with the steepest gradients in the world.

• Ffordd Pen Llech in Harlech, Wales was previously thought to have the steepest city street in the world and was given the Guinness World Record with a gradient at 37.45%, however after an appeal made by Baldwin street residents, both streets were reassessed and despite Ffordd Pen Llech having a greater gradient, the world's steepest Street was reinstated to Baldwin street, Dunedin.
• Baldwin Street in Dunedin, New Zealand, may be the steepest residential street in the world; it reportedly averages 1:3.41 (16.33° or 29.3%) for 161 meters but its maximum is claimed to be 35% for an unknown distance.^[1]
• Canton Avenue in Pittsburgh is said to have a 37% grade; the length of that grade is unknown.
• Three streets in Los Angeles are steeper—28th Street in San Pedro at 33.3%, Eldred Street in Highland Park at 33%, and Baxter Street in Silver Lake at 32%.^[2]
• Waipio Valley Road on the island of Hawai'i is said to be the steepest rural road in the United States, with some grades approaching 45%. It has been closed to non-local traffic.^[3]

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• San Francisco, California is known for having numerous steep streets:
  • The Filbert Steps section of Filbert Street has a maximum gradient of 31.5% (17.5°).^[4] The steepest hill on Filbert is the one-way down east half of the block between Hyde and Leavenworth. The city map shows a descent of 65 feet, which based on a half-block being 206.25 horizontal feet makes the grade 31.5%, the official figure.
  • 22nd Street shares the same 31.5% (17.5°) maximum gradient, between Vicksburg and Church Street.,^[4] also one-way down.
  • The sidewalk-only section of Broderick Street (between Broadway and Vallejo), where the city map shows a climb of 96 feet in the 275-foot block) is steeper than Filbert in San Francisco, just under 35% grade
  • The sidewalk-only block of Baker Street, just one block west of Broderick, also between Broadway and Vallejo is a bit steeper than Broderick.
  • An unofficial survey of San Francisco streets declared the steepest street in San Francisco to be a 30-foot section of Bradford Street,^[5] paved in 2010, with a 40% grade.^[6]
  • The curvy Lombard Street started as a 27% grade.^[7]
• The cities of Houghton and Hancock in Michigan, US, have been noted for their steep streets.^[8]