The Itasca County Highway 62 bridge is another prestressed concrete
girder bridge, common in these parts. This one features tubular steel
pilings to form bridge piers. These pilings are driven into the riverbed,
then they are cut off with their tops being level. A concrete cap is then
placed on top of the pilings. This provides a base to support the girders.
The advantage is far less disruption to the river. This type of pier is
most often used when bedrock is too deep to use as a base for footings.
Prior to this modern bridge being built, the river crossing was served
by a lift bridge. This secton of the river was served by a steamship,
so the bridges had to either move out of the way or be high enough
for the steamer to go under the bridge. The lift bridge was built in
1904, and rebuilt in 1923.