By Randy Ellis Staff Writer rellis@oklahoman.comOne of the most dangerous interstate on-ramps in all of Oklahoma is about to get a major upgrade under a contract awarded Monday by the state Transportation Commission. A $10.6 million contract to revamp the southwest corner of the Interstate 35/Interstate 240 interchange in South Oklahoma City was awarded Monday to Duit Construction/TTK Construction of Edmond.Read more on NewsOK.com