Expansion of US 113 to a divided highway began in the 1950s in Dover. Much of the remainder of the U.S. Highway in Delaware was expanded in the 1960s; the final section of two-lane US 113 in that state was expanded in the mid-1990s. The Berlin bypass became the first section of US 113 in Maryland to be expanded to a divided highway in the mid-1950s. In the early 1970s, US 113 between Pocomoke City and Snow Hill was expanded to a divided highway and the Snow Hill bypass was constructed, replacing what would become US 113 Business. The U.S. Highway between Berlin and the Delaware state line was expanded to a divided highway around 2000. The Maryland State Highway Administration (MDSHA) upgraded the last remaining two-lane portions of US 113 between Snow Hill and Berlin to a four-lane divided highway, with completion in 2019. US 113's northern terminus was moved to Milford in 2004 after the U.S. Highway was superseded by DE 1 from Milford to Dover. The Delaware Department of Transportation (DelDOT) plans to upgrade US 113 to a freeway from Selbyville to Ellendale; a freeway bypass of Milford was cancelled in 2008 because of community opposition.