State Highway 45 is part of an eventual partial loop that runs east from U.S. Highway 183 in Cedar Park to State Highway 130 at Pflugerville (east of Round Rock) where it merges with the SH 130 toll road, and then intersects with the southern portion of SH 45 near Buda, south of Austin. SH 45 is one of the very few East/West connectors in Austin, but it also connects to a tolled extension of Loop 1 (also known locally as the "Mopac Expressway") and allows direct access from to I-35 to Loop 1 by use of flyover connections rather than ground level intersections. The toll roads also provide access to the Dell headquarters and its approximately 16,000 employees. Despite the overwhelming initial opposition to the toll road concept, both toll roads have improved mobility in and around the Austin area and are significantly exceeding their revenue projections.