The first Northern Pacific Railroad bridge near this location was built in 1885. That bridge and the rail line to the east formed the southern boundary of the University of Minnesota campus. The bridge was rebuilt in 1917 to handle the larger locomotives and heavier trains.
At that time, the Northern Pacific Railroad operated a large number of trains through the University Campus with the trains operating at street level. This was not only very dangerous, but the trains caused dirt, noise, and blocked streets and walking paths for long periods of time. In 1922, the railroad and the university developed a plan to solve this problem by running Northern Pacific trains through a trench that would be built through the campus area. At that time, the old bridge was removed and the new Bridge #9 was constructed to connect the trench to the west bank river bluffs. Bridge #10 then carried the line over 20th Avenue South.
Bridge #9 was rebuilt again in 1955 as trains became heavier and longer following the conversion to diesel-electric locomotives. The next major event was the merger of the Northern Pacific with the Great Northern and the Chicago, Burlington, Quincy in 1970. As a result of the merger, the Burlington Northern owned more Mississippi River bridges than were needed. The BN continued to operate trains over this Mississippi River crossing until 1981. Bridge #10 was removed shortly after the line was abandoned, but the river bridge remained intact. Bridge #9 was opened again in 2000 after being retrofit as a pedestrian bridge and bicycle trail.
The bridge is just short of 1,000 feet long. The river spans consist of three shorter piers spanned two long trusses. The track was installed on top of the trusses rather than through the trusses as might be expected. Taller piers on each side of the river support several deck plate girder spans. This configuration gives the bridge its unusual profile shape with tall thick spans in the middle and thin spans on the ends.
Bridge #9 was closed between August 1, 2007 and August 21, 2007 while the recovery operation was ongoing at the site of the I-35W bridge collapse disaster. Construction work on the east bank of the river has resulted in the east end of this bridge remaining closed after the rest of the bridge was reopened. The bridge was fully reopened in early 2008. When Bridge #9 was reopened, it was the best location to view the I-35W disaster recovery work until the 10th Avenue Bridge was reopened. The bridge was also the best vantage point to watch the NTSB work to reconstruct the bridge after the disaster.
As part of the construction of the new I-35W bridge, a culvert was included to allow a future bicycle trail to be routed from downtown Minneapolis to Bridge #9. This would be a significant link in the regional trail system. Future plans include building the last section of the East River Parkway and a new road called Granary Parkway to connect existing trails with Bridge #9 and the trail system that heads into Ramsey County and Saint Paul.
The photo above is a view from the bluffs on the southwest side of the structure. The photo below is a view of the structure looking through the trees on the east river bank on the University of Minnesota campus.