April 6. A one-way sign emerged during the last week at the southeast corner of Highway 21 and Catawba Avenue, and no one seems to know why it’s there. A one-way sign normally indicates that traffic on a particular artery only flows in the arrow’s direction, in this case eastbound, which is not case on Catawba Avenue. The sign faces motorists approaching the intersection on Highway 21from both the north and south, where the direction of travel is both east and west. The Exit 28/DDI project, which has had its share of issues, is a state project under the control of the DOT. Blythe Construction is performing the actual work for the DOT.