20th Street (St. Louis)

Number streets of St. Louis, Missouri, start at the Mississippi River and increase as they go west. They are primarily found Downtown and in Downtown West.

1st Street is broken by the grounds of the Jefferson National Expansion Memorial, location of the Gateway Arch. South of the Memorial, it runs from Poplar Street down through the Kosiusko neighborhood to Victor Street where it dead-ends. 1st Street starts up again on Potomac Street and eventually turns into Gasconade Street. To the north, it runs from Washington Avenue as far as North Market Street (different from the downtown Market Street. 1st Street briefly shows up again in Near North Riverfront before turning into Kissock Avenue.

In the 1930s, the part of 3rd street beside the Jefferson National Expansion Memorial was converted into Memorial Drive. North of Biddle Street, 3rd merges with Broadway and continues on to the city limits.

5th Street is officially known as Broadway. Broadway goes as far south as Lemay in St. Louis County where it turns into Kingston Drive. To the north, Broadway intersects with 3rd Street and runs with it as far as Riverview Blvd where it then becomes Bellefontaine Road. Broadway is one of the major boulevards for St. Louis. In the north it passes O'Fallon Park, Bellefontaine Cemetery, and Calvary Cemetery.

12th Street, later 12th Boulevard, is now officially known as Tucker Boulevard, renamed for former Mayor Raymond R. Tucker. It is double sized and serves as the border between Downtown and Downtown West.

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