Motorists heading north on I-17 out of Phoenix should plan for overnight lane restrictions on I-17 over the next 2-weeks while ADOT works on pavement preservation. North-and-southbound I-17 will be narrowed to 1-lane in each direction between Coldwater Canyon Road in Black Canyon City and the junction with Highway-69. Crews will be working from 6-pm to 6-am each night, starting Sunday. Delays should be expected.