(SANDUSKY) -- The Michigan Department of Transportation is investing $900,000 to construct a center left-turn lane from Townline Road to the Wal-Mart in Sandusky along M-46. Construction is expected to get underway this week and be complete in June. Daytime shoulder closures will be in effect on M-46. Nighttime work will take place during the later phase of construction. One lane of alternating traffic will be in effect at that time.