The Idaho Transportation Department will begin work on its seventh Interstate 15 construction project Monday. Lane restrictions will take effect at that time. The project is part of the ITD effort to repair pavement and bridges along 190 miles of I-15 over the next several years. The new project includes resurfacing 15.3 miles of interstate between Spencer and the Montana state line. It will include work to repave ramps and cross streets at the Stoddard Creek Interchange and Humphry Interchange (exits 184 and 190). ITD said crews will complete the work in four-mile sections. During construction, interstate traffic will be reduced to one lane in each direction and the speed limit reduced to 45 miles per hour. The lane restrictions will remain in place overnight to protect motorists from abrupt pavement edges during construction, but speed limits will be raised to 65 miles per hour when crews are not working. Western Construction Inc., of Boise, is the contractor for the $6.94 million project.