Monroe Police are warning drivers that Route 34 at the Stevenson Dam will be closed this weekend, and a detour will be put in place.  The state road has been closed on and off for more than a year for maintenance work on the dam by First Light Hydro Generating Company.  Route 34 will be closed from 6am Saturday through 11:59pm Monday.  Traffic will be diverted down Route 111 to 110 toward Shelton where Route 34 can be picked back up in Derby.  The maintenance work is only being done on weekends to limit the impact to the public.