Announcement for the contract was awarded today which includes schedule of re-opening.
The contract also stipulates the southbound lanes of I-75 will be reopened within 14 days and one lane on the northbound side will be reopened within 21 days. The entire repair project is scheduled to be complete on or before April 15, 2016. - See more at: http://www.tn.gov/tdot/news/37913#sthash.eszsHhHr.dpuf
Both sides are closed due to the chance of falling rocks. South side has had some very close calls with rocks damaging the guard rail between the North and South bound lanes.