HOUGHTON/HANCOCK – Next Monday and Tuesday the Portage Lake Lift Bridge will have a couple of closures to both vehicles and snowmobiles. Recently crews installed new motors for the bridge to lift, and next week’s closure will be to test the new motors. From 10 pm on Monday to 5:30 am on Tuesday crews will raise and lower the bridge for duration of 10 minutes. And again, Tuesday night starting at 10 pm until Wednesday morning. Between closures traffic will be free to flow. The lower level of the bridge for snowmobiles will close from 7am to 12 noon on Monday. There are also closures to snowmobiles during the tests each night. The work done next week is a part of the continued work on the bridge to improve reliability and efficiency.