Two other Marsh arch bridges were also located on US-66 in Kansas, both over the Spring River.

The bridge has been placed on the National Register of Historic Places (as the Brush Creek Bridge) on March 10, 1983, due to its connection with US-66 and is also a Kansas state landmark.

66 Historic Byway nominated a bypassed 2.1 miles (3.4 km) section of original 1926 highway, which ran south from the Brush Creek to the Willow Creek bridge near Baxter Springs, for an NRHP listing.

This was part of a compromise after a disagreement between the county and the Kansas Route 66 Association as federal funds used for construction of the new bridge required demolition of the old.

Media related to Rainbow Curve Bridge at Wikimedia Commons