The ramp from southbound Interstate 35 to 20th Street will close Thursday.
Bridge construction will close the ramp from 9 a.m. to 3 p.m. Thursday.
The work is part of the $40 million project to repair, rehabilitate and redeck 18 bridges in and near the downtown loop.
All of the work is scheduled to be completed in mid-December.
View Southbound I-35 ramp to 20th Street to close Thursday in a larger map