The state Department of Transportation has scheduled a detour for Route 25 in Monroe from Friday at 7pm to Monday at 9am for work to replace a bridge.  The contractor can extend the closure to 9am only if the late morning work can eliminate one of the remaining weekend detours of this construction project. If not, the detour will end by 6am Monday.  The closure is weather dependent.  All business access for properties located within the construction zone will remain open, although traffic may only be able to access from one direction or the other.  The detour is onto Routes 25 and 111 and Wasserman Way.  The project involves the replacement of two box culverts, installation of new drainage and a water main, and associated road repairs and paving.  The nearly 5-point-6 million dollar project is scheduled for completion on August 31st.