(Travertine Nature Center, 30', 1969, 36-50-(a) across Travertine Creek at the nature center in Chickasaw National Park SW of Sulphur, Sulphur Township, Murray County, OK. US177 S. 0.15 miles from jct with OK7 on the S. side of Sulphur, E. on the Perimeter Road to the nature center 1.05 miles, veer right 0.4 miles to the nature center parking lot on the right. The bridge is part of the nature center building. (N34 30.243 W96 56.958) Photo by Richard Donovan 07-1998, submitted by Dan Brock.