After two years of construction, the Ferry Road bridge in Ward Hill has reopened. The $4.3 million project included repairs to the approaching roadways and South Riverview Street. The bridge, which closed in September 2011, was originally expected to reopen in April of this year. However, unforeseen utility relocations and subsurface conditions prompted the work to take longer than anticipated. The bridge, just west of Route 125, is the third span to open since mid-September. The new Congressman William H. Bates bridge, which spans the Merrimack River and connects Groveland with Haverhill, opened to traffic Sept. 20. Last month, the state reopened the historic Rocks Village Bridge, which spans the river between Haverhill and West Newbury; that span had been closed for renovations since June 2012.