Signage will display both the old and new designations for several months to help ease riders into the transition.

SEPTA says six of its buses will change from lettered routes to numeric designations. SEPTA's metro lines will also adopt a new system.

But, on Monday morning, SEPTA spokesperson Andrew Busch told NBC10 that only two -- of what had original been seven -- bus routes remained detoured. He said the Route 70 and 77 bus routes remain ...