In 2010, construction took place to improve the intersection of MD 2/MD 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/MD 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.