|Origin of name||Sequential numbering up the Allegheny River|
|Carson Street (until 1868)|
The original name of 20th Street was Carson Street. In 1868, Pittsburgh's modern sequence of numbered streets was created by renaming all the streets perpendicular to the Allegheny River; Carson Street became 20th Street.
Today Carson Street is the name of the main thoroughfare of the South Side, running along the south shores of the Monongahela and Ohio Rivers.
- Bruce S. Cridlebaugh. "Field notes: Changing Pittsburgh street names—from downtown to Lawrenceville." Pghbridges.com: Bridges & tunnels of Allegheny County & Pittsburgh, PA, Feb. 9, 2000. view source] cridlebaugh . [
- Sarah H. Killikelly. The History of Pittsburgh: Its rise and progress, p. 534. B. C. & Gordon Montgomery Co., Pittsburgh, 1906. DonsList.net HistPgh1909M; Google Books kXmloex-vr8C, poRU0YjqrzsC; HathiTrust 100122020; Historic Pittsburgh 00adc8925m; Internet Archive historyofpittsbu00kill, historypittsbur00killgoog. [view source] killikelly
- "An ordinance changing the names of streets." Pittsburgh city ordinance, 1868. Passed Aug. 31, 1868. In The Municipal Record: Containing the proceedings of the Select and Common Councils of the City of Pittsburgh: 1868, Pittsburgh Daily Commercial, Pittsburgh (Internet Archive pghmunicipalrecord1868_20200904_2014). Reprinted in the Pittsburgh Gazette, Sept. 2, 1868, p. 5 (Newspapers.com 86347563), Sept. 3, p. 3 (Newspapers.com 86347623), and Sept. 4, p. 3 (Newspapers.com 86347714). [view source] ordinance-1868-name-changes
|Numbered streets and avenues|