 It also has one intermediate interchange with U.S. Route 11 (US 11) just west of Fort Drum.I-781 is four lanes wide and serves as the principal travel corridor into and out of the post.The freeway is ceremoniously designated as the Paul Cerjan Memorial Highway in honor of Paul G. Cerjan, a late US Army Lieutenant General who oversaw a $1.2 billion expansion of Fort Drum in the 1980s.