The arch of the new Lake Champlain bridge will be floated down the lake and lifted into place on Friday, if the weather holds.
The arch was built on land a few miles north of the site of the bridge connecting West Addison, Vermont and Crown Point, New York.
Early Friday morning the nearly 2 million pound arch will be floated on Lake Champlain and then lifted slowly into place over the course of eight hours. The process is expected to finish in the late afternoon. But the entire operation could be postponed or delayed if there are high winds.
The main navigational channel under the bridge will be closed as the arch is floated into position, but ferry service will continue as normal.
New York State transportation officials say the public is welcome to watch work from historic sites on the New York side, but parking will be limited as local roads need to remain passable at all times.