Job Description. Job Description. Northwest Asphalt & Maintenance of Thief River Falls, Minnesota is actively seeking motivated individuals for seasonal asphalt crack repair. We have openings for Laborers and Flaggers. Work a 7 month season and enjoy winters off. . 401K & Health Insurance offered. Valid driver’s license preferred. Travel, lodging and weekly per diem are provided. We work all over Minnesota, North Dakota, and South Dakota so no ne...