MoDOT is shutting down lanes on the highway along with some on and off ramps for road work.
This week's closures are part of some on-going construction work. Starting Friday at 9 p.m., MoDOT will close the two left lanes of southbound I-170 at St. Charles Rock Road to replace expansion joints on the I-170 bridge that goes over the Rock Road.
That's not all. Drivers getting off southbound I-170 will only be able to turn right onto St. Charles Rock Road because of the work. There is one more issue as well.
The ramp getting onto southbound I-170 from westbound St. Charles Rock Road will also be shut down. All lanes are slated to reopen by Monday morning at 5 a.m.