A half-mile stretch of state Route 73 in the town of Keene, between state Route 9N and the southern end of Hulls Falls Road will be closed next week, between Tuesday and Thursday, to replace a culvert. During the three-day closure, motorists heading north on Route 73 toward Keene will be detoured onto U.S. Route 9 north to Elizabethtown, then take Route 9N to reach Route 73 in Keene. Motorists coming south from Keene will be detoured onto Route 9N toward Elizabethtown and then to Route 9 south to reach Route 73. The entire project is expected to be completed by August 14th.