Over the years, at least three major bridges in the Twin Cities have suffered catastrophic collapses. The best known of these disasters, of course, is the 2007 collapse of the I-35W Mississippi River bridge in Minneapolis that claimed 13 lives and injured 145 people.
Another big collapse occurred in 1904, when the five uppermost spans of the original Smith Avenue High Bridge in St. Paul came crashing down after being struck by a tornado. Luckily, no one was injured in that incident.
An even earlier collapse, now little remembered, also occurred in St. Paul, in 1898, destroying part of the 6th Street bridge, a structure that is all but forgotten today, even though it was once among the city's most impressive spans.
Built in 1891, the bridge was 1,156 feet long and consisted of a series of latticework steel and iron trusses. It crossed numerous railroad tracks and the Trout Brook-Phalen Creek valley to connect the Lowertown area just east of downtown to the Dayton's Bluff neighborhood.
Because the construction of Interstate 94 in the 1960s reshaped much of the area immediately east of downtown St. Paul, it's hard to imagine today exactly where the bridge stood. The collapse, however, occurred just south of the two stone arches beneath E. 7th Street, which still serve as entrances to Swede Hollow.
Looking at the old photographs of the bridge, I've often wondered why it was built in the first place. It was just a block from another series of bridges, on E. 7th, that also linked Lowertown to Dayton's Bluff.
The E. 7th crossing had been built at great expense in the 1880s and provided what is still the main route between downtown St. Paul and the city's East Side.
For whatever reason, the city decided in the early 1890s to built a second crossing at 6th Street. The new bridge, designed primarily for wagons and pedestrians, was only 60 feet wide (including sidewalks) and did not carry streetcars, which used E. 7th.