City of Lincoln issued the following announcement on May. 12.
Update: Due to a scheduling conflict with the Contractor, the sewer installation and road closure has been pushed back to Thursday, May 13, 2021.
6th Street just east of College Street will be closed for a sewer installation beginning the morning of Wednesday, May 12, 2021. The road will reopen when work is completed.
Original source can be found here.
Source: City of Lincoln