 The US $105 million 183A Northern Extension project was opened to traffic in April 2012.MoPac Express Lanes
In October 2013, the Mobility Authority began construction off the US $204 million MoPac Improvement Project, an 11-mile (17.7 km) express lane project with Congestion pricing between Cesar Chavez Street in downtown Austin and FM 734/Parmer Lane in North Austin.The project involved expanding State Loop 1/MoPac Boulevard by adding one tolled lane in each direction along the median of the highway.