Route 325 is a collector road in the Canadian province of Nova Scotia. It is located in Lunenburg County and connects Colpton at Route 208 with Mahone Bay at Trunk 3. The route originated as a post road between Halifax and Liverpool, dating from the latter part of the eighteenth century. In 1825, following the construction of a bridge across the Lahave River at present-day Bridgewater, the surveyor George Wightman recommended a change in the alignment between Mahone Bay and the new bridge. This shortened the route (now more or less equivalent to Route 332) that required a ferry crossing at LaHave. The new connection led to the growth of Bridgewater as the main commercial and transportation centre of Lunenburg County.