sentences:  In both cases, these first freeways were constructed a couple of years prior, for US 158 and US 421 respectively, and did not benefit from the 1956 Act; as a result, in 1988 the state was able to convenience the Federal Highway Administration (FHWA) in building the Winston-Salem Bypass.Between Ridgecrest and Old Fort, US 70 along Youngs Ridge was four-lane as of 1954; however, I-40 was not officially designated until 1982, after additional highway improvements including additional widening, runaway truck ramps and warning devices.In 1960, I-40 made three expansions