 With increased railroad traffic, in 1886, Leffert Buck replaced Roebling's wood and stone bridge with the predominantly steel bridge that still carries trains over the Niagara River today.The first steel archway bridge near the falls was completed in 1897.Known today as the Whirlpool Rapids Bridge, it carries passenger vehicles and trains between Canada (through Canadian Customs Border Control) and the U.S.A. just downstream of the falls.