In 1948, the Transport Museum Association (TMA) incorporated as a non-profit educational organization for the purpose of working on the needs of a museum. The land for the museum was acquired at Barrett Station in St. Louis County along the right-of-way of the historic Missouri Pacific Railroad. Included was this historic depot. The original MOPAC single-track with two tunnels were a bottleneck to the double track railroad. The line was moved about 1,000 yards to bypass the tunnels. When the line was relocated in 1944, the area to the left (south) of the track was filled in using rocks and soil removed as the tunnel was replaced by an open cut through the ridge. The depot, although it was moved and is in an area not open to visitors, remains on museum ground and track side of the now Union Pacific Railroad. The current use of the building is a wood working shop and storage area.