Highway 417 will be down to two lanes in each direction over the weekend between Nicholas Street and the Hwy 417/174 split as part of work to expand the highway to allow for rapid bus transit in 2015.
The lane reductions begin Friday evening at 9 p.m. and continue until 6 a.m. on Monday, Aug. 11.
On Monday until next Saturday there will also be occasional off-peak lane reductions on Hwy 417 in both directions between Kent Street and the Hwy 417/174 split and between Parkdale Avenue and Rochester Street.
Hwy 174 westbound will also be subject to off-peak lane reductions between Montreal Road and Blair Road.
Highway 417 will also be closed between Lees Avenue and the Hwy 417/174 split in both directions at 15-minute intervals in the early a.m. hours starting Monday, with OPP officers directing traffic.