The Harlequin Bridge is one of only three road bridges that cross the wild Stehekin River.

In 1948 when the U.S. Forest Service built the 4th bridge at this location, a new design was used, called the Baltimore Truss, to carry increasingly heavy loads. Almost all bridges of this type were built out of steel for railroads, however, the Harlequin Bridge was made of timber for vehicle use, which was unique. At its time of replacement in 2000, the Harlequin Bridge was one of only a few existing timber through truss bridges in the Pacific Northwest. This bridge here today is the 5th to be built at this location. It was designed specifically to pay respect to its predecessor.

The bridge provides access to Company Creek Road, the only other major road in Stehekin Valley, and to Harlequin Campground, the Stehekin State Airport, Company Creek Trail, the Stehekin Powerhouse, and many private homes.