Surveyors collecting data for a potential new interchange along the South Lawrence Trafficway will slow traffic along the highway today, with flow set to be down to one lane for six hours between the morning and evening rush hours.

The trafficway, formally designated as Kansas Highway 10, will have its southbound lane closed from 9 a.m. to noon between U.S. Highway 40 and just south of Clinton Parkway. The closure will shift to the northbound lane in the same area from noon to 3 p.m.

Drivers will be steered through the work zone by flaggers, said Kim Qualls, a KDOT spokeswoman.

The survey work is to gather information for a potential interchange at Bob Billings Parkway, a project that often shows up on governmental lists but has yet to secure any money for construction.