The Pont de Bir-Hakeim (French pronunciation: ​[pɔ̃ d(ə) biʁ akɛm]; English: Bridge of Bir-Hakeim), formerly the Pont de Passy ([pɔ̃ d(ə) pasi]; Bridge of Passy), is an arch bridge that crosses the Seine in Paris. It connects the 15th and 16th arrondissement, passing through the Île aux Cygnes. The bridge, made of steel, was constructed between 1903 and 1905, in replacement of a footbridge that had been erected in 1878. The bridge has two levels: one for motor vehicles and pedestrians, the other being a viaduct (the Viaduc de Passy) built above the first one, through which passes Line 6 of the Paris Métro. The bridge is 237 metres (777 ft) long and 24.7 metres (81 ft) wide. The part crossing the Grand Bras ('great anabranch') of the Seine (west from the island) is slightly longer than the one crossing the Petit Bras ('small anabranch').