If necessity is the mother of invention, the LBJ Express megaproject in Dallas, Texas, is a case study in pioneering engineering design and forward-thinking financing. This award-winning project stands as the largest and most complex mixed highway ever designed in the United States in 2015 and, to date, in the Southwest.
The corridor features a combination of eight rebuilt general use lanes (four in each direction), two rebuilt and expanded continuous frontage roads in each direction, six managed toll lanes (three in each direction) flanked by the free lanes on Interstate 635, five miles of which are depressed roadway, and four managed toll lanes on Interstate 35 East.
