Interstates, the airport zone and the river valley
Interstate 494, Interstate 35W, Highway 77 and Highway 100 cross the city, and the Mall of America, the airport and a large hotel district sit in its eastern half. The south edge slopes toward the Minnesota River valley, with bluffs and wooded sections.
Large commercial buildings carry their own challenges. Wide flat roofs hold standing water if drains are blocked or the slope is slight, and rooftop units, vents and skylights each create a point where leaks can start. Wind across open roof areas can lift edges, and winter brings drifted snow against parapets and equipment. Access for cranes, lifts and material staging has to be arranged with building management.

