From City of Dallas:

Effective Sunday, June 17, 2007

The Live Oak exit on southbound US 75 (Exit 284C) will be closed starting Sunday night, June 17 and remain closed until June 2009. The closure is part of DART’’s Green Line Rail construction around the Bryan/Hawkins intersection.
Two bridges in the area are being removed and the road is being lowered to street level.

Motorists who typically take the Live Oak exit are advised to either exit at Lemmon or take the Ross exit and travel to Pearl St.

Northbound traffic is not affected at this time. Weekly updates on all DART Rail construction are available at www.DART.org/constructionupdates.