County Line Bridge

County Line Bridge may refer to:


 * County Line Bridge (Morristown, Indiana), listed on the National Register of Historic Places (NRHP) in Rush County and Hancock County
 * County Line Bridge (Columbus Junction, Iowa), NRHP-listed in Washington County and in Louisa County
 * County Line Bowstring, between Cloud and Republic counties, near Hollis and Wayne, Kansas, NRHP-listed
 * County Line Bridge (Cherry County, Nebraska), spanning Niobrara River, NRHP-listed in eastern Cherry County
 * EJP County Line Bridge, Hyattville, Wyoming, NRHP-listed