Ameren Missouri will temporarily close Bagnell Dam on Business 54 in Miller County on Monday. MoDOT says the dam will be closed for survey work. The dam will be closed from 9:00 a.m. – 5:00 p.m. Drivers are being asked to use alternate routes. For more information about this project or other transportation related matters, call 1-888-ASK-MODOT or go to MoDOT’s website.