This will cause some headaches, to be sure.
The city has been informed that Marquette Avenue will be closed between 10th and 12th Avenues starting Wednesday, March 16, for a Union Pacific Railroad bridge rehabilitation project. The closure is estimated to last into May.
Traffic will be detoured on to 12th and Milwaukee Avenues during construction.
If this is your normal route of travel, please plan on an alternate route. This is obviously a major route through the city, and we thank you ahead of time for your patience.
I will keep you posted during this project.
South Milwaukee Blog 
Hwy. 32 signs at Milwaukee Ave.
warning of underpass closure on Marquette Ave. would be helpful.
There was one this afternoon.
We are working on a broader signage and overall communication plan in the next week to 10 days, too. Stay tuned.
Will this bridge be completed before Heritage Days Evening on the Avenue in July?
Yes. Right now they are looking at a mid-May completion.
I assumed it was being closed to fix the flooding that happens there every spring. Guess not.