State and county leaders plan to upgrade I-75 interchange at Big Bend Road in Riverview Drivers will see a new I-75 southbound exit ramp Plans underway to upgrade I-75 interchange at Big Bend Rd. and last updated 2021-05-07 09:44:40-04 RIVERVIEW, Fla. â State and local lawmakers are taking steps to make your morning commute from Riverview faster. Starting this summer, the Florida Department of Transportation and Hillsborough County are planning to upgrade the I-75 and Big Bend Road interchange. It will span from Covington Garden Drive to Simmons Loop. WFTS-TV Drivers can expect crews to widen Big Bend Road from a four-lane to a six-lane divided road. Commuters will also see new pedestrian, bicycle and bus facilities.