A man in a black top hat and a long blue-gray coat stands at the railing of an iron bridge, looking out between huge X-shaped girders, and beside him a figure in a blue smock leans on the parapet. At the left edge another man strides past, cut off by the frame. Beyond the girders a puff of white steam rises over a pale, sloping roof, all in cool blues and grays. Gustave Caillebotte made this oil sketch, dated 1876–1877 in the literature Christie's cites, for On the Pont de l'Europe, now in the Kimbell Art Museum in Fort Worth.

Christie's calls it the sole oil study for that picture, highly finished and well over half its size. The bridge spanned the rail yards of the Gare Saint-Lazare, a short walk from the house where Caillebotte grew up; the Kimbell says the finished canvas is almost monochrome, its blue matching the chill in which the figures stand. The sketch stayed with the artist's estate until the Paris dealer Galerie Lorenceau acquired it in 1971. It was shown at Caillebotte's 1951 Paris retrospective and in Washington in 1982–83, and Christie's sold it in New York in 2002 and again on May 15, 2018, for $8,187,500.

It is in a private collection.