Centennial Bridge, Through arch bridge in Miramichi, Canada

Centennial Bridge is a steel through-arch bridge 1.1 km long and 73 m high, crossing the Miramichi River in Northumberland County, New Brunswick. It carries provincial routes 11, 8 and 134 between Douglastown on the north bank and Chatham on the south bank, both now part of the city of Miramichi.

Built in 1967 to mark Canada's 100th birthday, it replaced a ferry service that once connected Douglastown and Chatham. The new route made travel between these areas faster and more direct.

The bridge is named for Canada's centennial year, 1967, when it opened. Its opening ended the Romeo & Juliet ferry crossing between downtown Chatham and Ferry Road; that ferry was then moved to Kennebecasis Bay near Saint John, between Summerville and Millidgeville.

The bridge is open to traffic around the clock and has sidewalks for walking and cycling. It carries busy traffic during peak hours, so expect slower movement at these times.

The Romeo & Juliet ferry that the bridge replaced was not scrapped: it was moved to Kennebecasis Bay near Saint John, where it ran between Summerville and Millidgeville. In 2012 the bridge carried 14,800 vehicles. Similar steel bridges in eastern Canada include the Seal Island, Burton and Laviolette crossings.