 The Fort Hill project, named so because of the mountain that lies near the massive US 119 interchange, became one of the largest earth-moving projects on the North American continent up to that point and one of the biggest changes that Charleston has ever known.In 1971, construction began for the connection between the I-77/64 interchange at exit 101 (I-77 MP 101.64) and exit 96 (MP 95.87).In 1974, I-64 opened to traffic from milepost 52.40, two miles (3 km) east of exit 50 at Institute to exit 55 (milepost 55.45).