Further southeast along the river, SR 504 passes the privately owned Eco Park resort, a youth camp, and a heliport near the Hoffstadt Bluffs Viewpoint. The highway then crosses over Hoffstadt Creek on a steel truss bridge that sits above the valley floor; it is the longest of 13 bridges on SR 504. The bridge also marks the western extent of the blast zone, where trees were felled during the 1980 eruption of Mount St. Helens, located away. The area has large forests of young fir, pine, and cottonwood trees planted by Weyerhaeuser in the 1980s as part of a regeneration and restoration project. The company also operates the Charles W. Bingham Forest Learning Center, a museum that overlooks the North Fork Toutle River and also includes a rest area.