SHAMOKIN DAM – Motorists in Monroe Township, Snyder County will soon have to find another way to cut around Routes 11 & 15 . PennDOT says a portion of the Old Trail Road is set to close Wednesday. Crews will be working to replace the bridge that spans that roadway. The portion of the road will remain closed until mid- November. Work is weather permitting and the schedule could change. There will be a detour in place using Route 11, Park Road, and Roosevelt avenue.