The Fort de Suarlée is located about northwest of the center of Namur. The fort, one of the larger Brialmont forts, is a triangle, similar to the Fort de Boncelles. It commands the Brussels-Namur train line. A deep by ditch encircles the fort. The ditches were defended in enfilade by 57 mm guns in casemates resembling counterscarp batteries, firing at shot traps at the other end of the ditch. The principal armament was concentrated in the central massif, closely grouped in a solid mass of concrete.
