Quote History Quoted:
That NZ street has a 35% grade. Canton Ave in Pittsburg is 37% grade.
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The 37% part only extends about 21 feet, that's not even the width of a single residential lot, 21 feet doen't make a street.
Wikipedia:
Baldwin Street, in Dunedin, New Zealand is the world's steepest residential street, according to the Guinness World Records.[url=https://en.wikipedia.org/wiki/Baldwin_Street#cite_note-1][1][/url] It is located in the residential suburb of North East Valley, 3.5 kilometres (2.2 mi) northeast of Dunedin's city centre.
Fox News:
1.
Canton Avenue, Pittsburgh, Pa.; 37 percent gradient
This is the steepest officially recorded public street in the U.S., and
probably the world. Although its 37 percent grade only extends about 21
feet, it still stops walkers and bikers dead in their tracks. Located
in the Beechview neighborhood, the cobblestone-paved road has stairs
instead sidewalks and despite the "Do Not Enter" signs posted in both
directions, people still try to go up in cars and on bicycles. The road
is part of Pittsburgh's annual Dirty Dozen bike race that takes cyclists over Pittsburgh's thirteen steepest hills.