In October 1942, not a single rental unit was available in the county. On October 1, 1949, the University of Virginia in Charlottesville created an extension center in the county named Northern Virginia University Center of the University of Virginia. This campus was subsequently renamed University College, then the Northern Virginia Branch of the University of Virginia, thereafter, the George Mason College of the University of Virginia, until it was finally designated George Mason University, which it remains today. The Henry G. Shirley Highway (now Interstate 395) was constructed during World War II, along with adjacent developments such as Shirlington, Fairlington, and Parkfairfax.