Is a discussion and notes page for the widening of this bridge. It is a unique widening of the truss structure while the bridge remains open.
Really a neat concept
The middle cantilevered span is fascinating. I have not noticed one like it before.
An engineering description of the project:
Mainly a railroad bridge, the auto lanes were 1930s 18 foot with pipe railing. It was a pretty exciting motorcycle ride: massive steel and perhaps a train along one side and barely anything between you and the river far below on the other side.
Their renderings seem to show that they're taking great care to copy the existing design in the expansion, right down to the beam stylings and cross-lacing. Is this true? It seems to me that they expect the structure to last forever as rarely do I see anyone make such a large investment to remodel an existing bridge (especially one 75 years old!) in favor of new construction! Then again, rail bridges do seem to last nearly forever just because of how their built and the matter-of-fact way in which rail companies keep them maintained.
This bridge is going through a dramatic transformation to say the least. Trusses added to the roadways, makes awesome sense. Will be a neat crossing once it is all done.
This is an incredible bridge! Adding some Street Views to show this.
The Louisiana Department of Transportation and Development is currently undertaking a project to widen the vehicular lanes on the span. The project will take a while, so if you need to cross via the Huey P Long bridge, exercise caution while they work on it!
Longest railroad bridge in the US