416 designation was extended south along MD 2 to Solomons. By 1970, the MD 4 freeway between Meadows and Hills Bridge was complete. In addition, MD 4 replaced MD 416 down Southern Maryland Boulevard and Solomons Island Road to Solomons, and the divided highway was extended south from Hills Bridge to MD 263. In turn, MD 408 was placed on what was previously MD 4 between Upper Marlboro and Lothian. The western extent of MD 408 was rolled back to Waysons Corner by 1980. MD 2-4 was also expanded to a divided highway south to Port Republic by 1980. The next major change in the routing of MD 4 came in 1977, when the Governor Thomas Johnson Bridge was completed. The St. Mary's County side of the bridge unloaded onto county highways until 1982, when the modern, controlled access Patuxent Beach Road was completed to MD 235. MD 4 was then extended west from Solomons along Patuxent Beach Road and St. Andrew's Church Road to its present southern terminus in Leonardtown. MD 2-4 bypassed Port Republic and St. Leonard along a new alignment in 1984. The bypass of the old alignment between Lusby and Solomons was completed in 1985. The MD 4 freeway was extended to Bristol in 1993 and the interchange at MD 260 was completed in 2003. In 2012, Maryland Route 4 between Bristol and Upper Marlboro received an additional honorary name for Stephanie Roper, an honor often reserved in Maryland for deceased state troopers and governors. After the murder of Stephanie Roper, her parents Roberta and Vincent Roper became national leaders regarding victims' rights and services including as founders of the Maryland Crime Victims' Resource Center, Inc. In 2010, construction took place to improve the intersection of MD 2-4 and MD 231 in Prince Frederick, widening the road to six lanes in the vicinity of the intersection. This project was the first phase of a larger project to expand MD 2-4 to six lanes between MD 765 south of Prince Frederick and Stoakley Road north of Prince Frederick. In 2018, construction began on the second phase of widening between north of the MD 231 intersection and Fox Run Boulevard. The widening of this section was completed on November 23, 2020. Another future project along MD 4 involves upgrading the highway between MD 223 in Melwood and the Capital Beltway in Forestville to a freeway featuring interchanges at