Brotherhood Bridge, Road bridge in Juneau, United States.

The Brotherhood Bridge is a concrete road bridge carrying the Glacier Highway over the Mendenhall River in Juneau, Alaska. It marks the boundary between the urban and rural parts of mainland Juneau. The current structure, rebuilt in 2015, is 99.5 feet wide and includes four traffic lanes, a multi-use path, and a sidewalk.

The first bridge at this crossing was built in 1903, followed by replacements in 1919 and 1931. The current span was completed on October 31, 2015, after demolition of the old bridge and staged construction of a new 99.5-foot-wide structure began on April 25, 2014. The crossing was named for the Alaska Native Brotherhood and was designed by civil engineer Roy Peratrovich Jr.

The bridge takes its name from the Alaska Native Brotherhood, founded in 1912 in Sitka; Roy Peratrovich Jr., its designer, was the son of ANB leaders Roy and Elizabeth Peratrovich. Bronze plaques on the span refer to the Raven and Eagle clans of the Tlingit people. A Juneau-area band also took the name Brotherhood Bridge.

The bridge provides safe passage for vehicles, cyclists, and pedestrians with separate facilities for each type of user. Access is available year-round, though winter conditions with snow and ice can affect travel times and safety.

Roy Peratrovich Jr., who designed the bridge, was the son of Roy and Elizabeth Peratrovich, leaders of the Alaska Native Brotherhood and its counterpart, the Alaska Native Sisterhood. The bridge's name honors the ANB, and a Juneau-area band later took the name Brotherhood Bridge.