The Florida Department of Transportation named a new local secretary following the announcement earlier this month by current chief Paul Steinman of his resignation.David Gwynn will take over District 7, which comprises Pinellas, Hillsborough, Pasco, Hernando and Citrus counties, according to an email FDOT Secretary Mike Dew sent to employees. Gwynn currently serves as the director of transportation operations in District 1, which is based in Bartow.Gwynn will inherit the responsibility of overseeing Tampa Bay Next, a redesign of Tampa Bay Express, or TBX, the controversial $6 billion interstate expansion plan that could add up to 90 miles of new toll lanes. Steinman is the third high-ranking transportation official associated with TBX to resign recently.Debbie Hunt, District 7's director of transportation development, resigned last fall. She was replaced by Bill Jones. And former FDOT Secretary Jim Boxold resigned in February and was replaced by Dew.Gwynn, who received his bachelors degree at the United States Military Academy in West Point and a masters degree in transportation engineering from the University of Florida, will overlap with Steinman as District 7 secretary until Steinman's July 14 departure, Dew's email said.