So the state can install big new shiny signs to replace the old shiny signs.
The schedule (beginning at 6am Saturday):
The ramps are expected to be closed in the following order (weather permitting):
* Westbound M-14 exit ramp to Main Street.
* Southbound US-23 exit ramp to eastbound Washtenaw Avenue.
* Southbound US-23 exit ramp to eastbound I-94.
* Northbound US-23 exit ramp to westbound Washtenaw Avenue.
Each closing is expected to last no longer than 90 minutes.