The North Bridge is a historic site located in Concord, Massachusetts. It is best known for being the location of the first military engagement of the American Revolutionary War on April 19, 1775. The bridge connects the two sides of the Concord River and symbolizes the fight for American independence. The original North Bridge was built in 1760, but it has been rebuilt several times since then. Today, it is part of the Minuteman National Historical Park, which preserves the history of the early battles of the American Revolution. Visitors can explore the area and learn about the events that took place there.