The South Puyallup River Bridge was built in 1930-31 in Mount Rainier National Park

Mount Rainier National Park

Mount Rainier National Park is a United States National Park located in southeast Pierce County and northeast Lewis County in Washington state. It was one of the US's earliest National Parks, having been established on March 2, 1899 as the fifth national park in the United States. The park contains...

 as part of the West Side Road project, planned to link the park's Nisqually and Carbon River entrances. The stone-faced reinforced concrete bridge was designed by the National Park Service

National Park Service

The National Park Service is the U.S. federal agency that manages all national parks, many national monuments, and other conservation and historical properties with various title designations...

 and the Bureau of Public Roads. It spans 42 feet (12.8 m) and is almost 35 feet (10.7 m) wide, carrying two lanes of traffic.

The bridge was placed on the National Register of Historic Places

National Register of Historic Places

The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...

 on March 13, 1991. It is part of the Mount Rainier National Historic Landmark District

National Historic Landmark

A National Historic Landmark is a building, site, structure, object, or district, that is officially recognized by the United States government for its historical significance...

, which encompasses the entire park and which recognizes the park's inventory of Park Service-designed rustic architecture.