Four (CP+UP+Amtrak)/Milw RR Bridges to cross the Mississippi in La Crosse, WI.

(Satellite)

Twice within a week I have seen bridges over a Black River. The first one was in Port Huron, MI. This crossing uses four bridges because it uses islands to get across the Mississippi.

Steven J. Brown posted
Amtrak Empire Builder #7 crossing the Mississippi River at La Crosse, Wisconsin - May 16, 2000.

From east to west.

Black River

Jerry Krug posted
Canadian Pacific's (ex-Milwaukee Road) bridge over the Black River in La Crosse, WI. Photo taken from a cruise boat on the north side of the right-of-way on October 16, 2011.
[Bird's Eye View]

French Slough

Evidently this bridge has been changing. It once was a swing bridge.

Google Photo

Around seven years ago it was a plain steel girder bridge with a couple of through spans for higher clearance.

Bird's Eye View

Around a year ago there was some construction activity.

Goolge

Mississippi East

Bird's Eye View

Mississippi West

Bird's Eye View

Note all of the high rail vehicles on the bridge and island. I assume they are doing some sort of construction. I don't think it would take that many people to do an inspection. 

Google

I wonder if the swing span is closed because this local is headed towards the river.

Google

Zebulon Bowles commented on a post

This must have been a predecessor bridge.

Caoimhín Kevin Bunker posted

The railroad transfer steamer 'JOHN BERTRAM' just past the bridge that would soon, when finished, put her out of work.

Library, University of Wisconsin - LaCrosse, Special Collections (online)