Mostly overnight restrictions are scheduled this weekend along both directions of Interstate 17 between Happy Valley Road and State Route 74 in north Phoenix, state transportation officials said.

The Arizona Department of Transportation recommends drivers allow extra travel time while the following restrictions are in place during pavement improvement work from Friday, Oct. 11, until Monday, Oct. 14:

• Northbound I-17 will be narrowed to one lane between Happy Valley Road and Loop 303 from 9 p.m. Friday to 5 a.m. Saturday, from 9 p.m. Saturday to 5 a.m. Sunday and from 9 p.m. Sunday to 5 a.m. Monday.
• Southbound I-17 will be narrowed to one lane between SR 74/Carefree Highway and Loop 303 from 9 p.m. Friday to 9 a.m. Saturday, from 9 p.m. Saturday to 9 a.m. Sunday and from 9 p.m. Sunday to 5 a.m. Monday. Note: Southbound I-17 on- or off-ramps at Dove Valley Road and Loop 303 will be closed at times during the mostly overnight weekend work.