Maroon Creek Bridge

The original Maroon Creek Bridge is a steel trestle along State Highway 82 at the western boundary of Aspen, Colorado, United States. It was designed by George S. Morison in 1888 for the Colorado Midland Railroad, one of the last viaducts in Colorado built for a standard gauge mountain railroad in the 19th century. Due to the later removal of most track and the rail depots, the bridge is the most visible remnant of rail service to Aspen. In 1985 it was listed on the National Register of Historic Places along with other highway bridges in the state, including the Sheely Bridge, also in Aspen.

When it was built, the Midland was ahead in its race with the Denver and Rio Grande to make the first rail connection to Aspen, then a booming silver mining center. The Midland had followed the Roaring Fork Valley up from its main line at Glenwood Springs, but was stalled at Maroon Creek by a delay in the bridge steel. The Rio Grande was thus able to make up the difference and bring the first train to Aspen, with the Midland following a few months later.

Aspen's boom years ended a few years later, and by the 1920s the bridge was abandoned. It was soon expanded and converted to use as a road bridge. It served as the main entrance to Aspen for many visitors as the city's economy rebounded when the Aspen Mountain ski resort was developed after World War II. As growth spilled over to Aspen's west, it became a traffic choke point for the region.

It remained in use until longstanding plans for a newer, wider bridge came to fruition in 2008. At that time the original bridge was the oldest one still in use on Colorado's state highways. The award-winning new bridge was designed to be aesthetically similar to its predecessor, which remains in service as a foot bridge. It may be used for a light rail line to further alleviate traffic problems in the valley.