U.S. Federal Route 20 weaves along Interstate 94 through Porter County. This is located in the northern portion of the county. U.S. Rt. 20 passes through the following towns in Porter County. Portage
Chesterton Furnessville U.S. Rt. 20 is not multi-plexed in Porter County. U.S. Rt. 20 crosses the following highways in Porter County. Interstate 94, (Tri-State Highway) at Portage. (NO INTERCHANGE) Indiana State Route 249, at Portage. Indiana State Route 149, at Burns Harbor.