On going traffic issues on Lancaster Av. in the area of the Interstate 476 Interchanges should be clearing up.  Due to a serious accident on northbound I476, the Blue Route has been closed most of the morning. As a result, traffic in Radnor Township, especially in the area of Lancaster Av. and I476 Interchanges, has been extremely heavy and backed up.  From The Pennsylvania State Police, the Blue Route has been re-opened and traffic should begin to clear out shortly.