PennDOT has closed the bridge that carries Iron Stone Hill Road over Inners Creek between the boroughs of Dallastown and Loganville.
The closure came Thursday following an inspection, according to a PennDOT news release.
PennDOT spokesman Mike Crochunis said the bridge will remain closed until it can be replaced.
Until then, drivers should use a detour which follows Church Street, Susquehanna Trail and Route 214.
Crochunis said a project to replace the Iron Stone Hill Road bridge is currently under design with construction scheduled for 2017, if not sooner.