Saturday, September 10, 2016

18th Street Bridge

20150502 0713, South Elevation
(Bridge Hunter, Bridge Hunter Previous, Historic Bridges, Ugly Bridges)

The 18th Street Bridge is unusual for a road bridge because it has only one movable span, which is 182 feet long. I was shocked to learn from Ugly Bridges that its superstructure needed fixing and its deck needed replacement because it looked pretty good to me. And because this is a rather modern bridge by Chicago's standards having been built in 1967. Then I learned from Historic Bridges that "This bridge is slated for rehabilitation to run from December 2014 to April 2015 at a cost of $5.4 Million. The work is to include new roadway deck and sidewalk deck, truss repairs, and unspecified repairs to the floor beams and lateral bracing." So I'm seeing it soon after it had been repaired. So it should look pretty good.

I had been waiting to publish until I got better light than my 20150502 pictures. But I'm sure you can find better pictures in Bridge Hunter and/or Historic Bridges anyhow.

I took this picture to confirm that an oil train is still passing on the Canal Street RR Bridge, but it does provide an image of the north elevation. A video of this bridge going up also shows the St. Charles Airline Bridge in a raised position.

According to Historic Bridges, the first two bridges built here were hand turned swing bridges. The one built in 1868 was made of iron and wood whereas the one built in 1888 was made of iron and steel. In 1905 a steel Scherzer Rolling Lift bascule bridge was built. In 1967 the current fixed trunnion bascule bridge was built. Below are pictures of the Scherzer bridge.

Scherzer Rolling Lift Bridges, 1908
Scherzer Rolling Lift Bridges, 1908
Update: another view of the rolling bridge is in the background of this video:

MWRD posted
Historical Photo of the Week: A view of 18th Street near the South Branch of the Chicago River is seen in this photo from November 12, 1902. The image was shot from the bridge looking west.
So the boxcar in the lower middle would be on Pennsy tracks. I wonder how slow the horse and wagon on the right is going that two others felt a need to go around it.]

No comments:

Post a Comment