http://bridgehunter.com/il/madison/bh36589/
If this is the bridge(s) in question, let them go, IMO, but make the replacements less generic looking.
Based on the plans laid out above, it will be just as generic as the current bridge.
The only remarkable difference I can find are:
- Less supporting pylons in total for the same distance
- Wider bridge in each direction allows for safety and shoulders.
As noted in the design, the new EB bridge will be built and split with a jersey barrier for 2 way traffic while the old span is demolished and the WB built in its place.
Since the current bridge has no shoulders and rails almost against the lane stripe today, the only thing will be the reduced speeds in the construction zone. Probably 45-50mph.
It appears for "glorious looking designs" IDOT tends to use them in city centers or for some of the smaller towns along the Mississippi. The Illinois River, less so.
This one is will be 100% utilitarian all the way with no embellishments.