I guess the entire area is on the National Register of Historic Places, and is being considered for restoration into a living history museum. Hopefully that fares well for the bridges.
The Bing link worked fine for me.
Looking at the view on Bing, there appears to be another pony truss similar to the Lassig span tucked in right next to the building. The Lassig bridge(s) is very significant and it would be nice to see the city relocate it to a park before this complex is someday likely demolished.
Not sure if this Bing link will work or not:
There was an entire complex along the river that bridges 1&2 were the main access to.
Aside from the Nabisco plant there was a Johns Manville plant on the north bank on both sides of the main street.
If you go to historicaerials.com and put Marseilles IL in the search box and check out the topo maps(sorry the site has no photos outside the Chicago metro area) from 1972 through 1984 you can see how the tracks were laid out.
I agree there's no way a car has crossed this for MANY years. There is also two other bridges on the south side of the building I photoed and listed here. Unless any one has further history I figured as well to leave them all together.
I've never seen a car cross this bridge. It was for the railroad spur that went into Nabisco that was torn up in the late 80s. I go past it every day and it has a fence across it at the north end with a garbage dumpster in front of it.
The bridge is in Marseilles, IL not Marseille and it actually looks the same and I believe cars still cross it on occasion.
The town is spelled Marseilles with an S on the end, not "Marseille". Pronounced "Mar-sales". There is a small, single span manually powered swing bridge over the I&M canal 50 yards north of this bridge that served the same RR spur.