A three-way interlocking railway crossing known as the Columbus Wye was formerly located in the northern part of Columbus and was donated to the City of Columbus by the Burlington Northern Railroad. When this type of switch was constructed, only three were built: one in Hamburg, Germany, which was destroyed during the war; one in Pennsylvania, which was removed within a short time; and the Columbus crossing, the only one remaining. Well known to those familiar with the railway system, it was listed in every railroad exchange in the United States to show which rail was used to reach the proper destination. When installed, it used 90 lb rail, but when diesel engines appeared in 1958 it was changed to 115 lb rail to handle the additional weight. The original crossing lasted until 1968, when it was replaced with an exact replica, which remained in use until 1981, when a two-way crossing replaced it.