The project includes constructing a new four-span, 663-foot steel girder bridge just downstream of the existing bridge, moving utilities, tying existing roadways into the new bridge, and demolishing the old seven-span steel truss structure.
Officials said there will be no traffic restrictions until the end of September 2012. At that time, a detour will be put in place, and the old bridge will close for about nine months in order to tie existing roadways into the new bridge.
Overall completion of the project is expected in August 2013, officials said.
The construction contract was awarded to Brayman Construction of Saxonburg, Pa., who was the low bidder at $16.2 million.