The line served as a connection point, with several lines heading west at Northtown, and connections to Chicago at St. Paul.
The railroad became part of the Northern Pacific Railroad in 1896, which had constructed many lines expanding to the west coast.
The railroad continued to serve as a mainline, being double tracked very soon after construction.
By 1970, the NP merged with rival Great Northern, as well as Chicago, Burlington & Quincy to form Burlington Northern.
BN continued to maintain this as a high priority line. By 1996, the BN merged with Atchison, Topeka & Santa Fe Railway to form BNSF Railway.
BNSF continues to operate this line as the St. Paul Subdivision, and is the busiest section of track in Minnesota.
This structure was once a freight spur from the mainline to the St. Paul Depot and several connections.
The bridge was first built in 1880 as a simple I-Beam span over Trout Brook.
It was rebuilt again in 1893 with two new deck girder spans, which would cross 4th Street.
This location of 4th Street has numerous bridges as several lines converged and served various industry. These tracks would all lead north through a very small valley, eventually splitting at Westminster Junction.
Today, this bridge continues to be largely unaltered from its 1893 appearance. The difference is the addition of a trail deck. The bridge directly to the east was demolished at the time of the trail deck being added.
This structure sits on stone and steel substructures.
The author has ranked this structure as moderate significance, due to its common design. However, the 1880 I-Beam span is one of the oldest known for railroad use.
The photo above is an overview.