SEPTA’s board on Thursday approved a final route for the Norristown High-Speed Line extension that will provide direct service to the King of Prussia Mall.

The 4.5-mile, elevated high-speed rail extension would give riders a faster connection among King of Prussia, Center City and University City, the region’s three largest economic hubs. It is projected to cost between $1-1.2 billion and will include two stops at the mall among others in the King of Prussia vicinity.