Lowry Hill Tunnel is a tunnel accommodating the Interstate 94 freeway near downtown Minneapolis, Minnesota that was completed in late 1971. It is placed at a near-right-angle turn in the highway, forcing the three lanes of traffic in each direction to slow down. The advised speed is 35 miles per hour (56 km/h). Although constructed as a tunnel through rock, the surface a few yards above is covered with roadways. The tunnel functions as if it were the underpass under a quarter-mile (400 m) wide bridge which carries Hennepin Avenue, Lyndale Avenue, and various ramps over I-94.