The streets in the downtown area follow a grid pattern with two naming conventions. Many of the north-south streets are numbered from west to east, beginning at the old railroad depot, with numbers from four to nineteen. The place of "Twelfth Street", however, is taken by North and South Lamar Boulevard (formerly North Street and South Street). The east-west avenues are named for the U.S. presidents in chronological order from north to south, from Washington to Cleveland; here again, there are gaps: there is no street for John Quincy Adams, who shares a last name with John Adams; "Polk Avenue" is replaced by University Avenue; and "Arthur Avenue" is lacking.