The Bayonne Bridge is the fourth-longest steel arch bridge in the world, and was the longest in the world at the time of its completion. It connects Bayonne, New Jersey with Staten Island, New York, spanning the Kill Van Kull. The bridge is one of three connecting New Jersey with Staten Island, and the only one not to traverse the Arthur Kill. The Goethals Bridge in Elizabeth and Outerbridge Crossing in Perth Amboy are the other two New Jersey-Staten Island connecting bridges, and both the Bayonne and Outerbridge carry traffic on both NY 440 and NJ 440.

The bridge was designed by master bridge-builder Othmar Ammann and the architect Cass Gilbert. It was built by the Port of New York Authority and opened on November 15, 1931, after dedication ceremonies were held the previous day. The bridge became a National Historic Civil Engineering Landmark in 1985.

The Port Authority of New York and New Jersey (PANYNJ) is planning a $1 billion rebuilding project to raise the roadbed within the existing arch to allow larger container ships to pass underneath.