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Bringing a Community Together

posted 07.26.2019

Tulsa Gathering Place Provides a Place for Everyone

It was a big dream – to transform nearly 100 acres at the margins of Tulsa’s Arkansas River floodplain into a dynamic, interactive and inviting environment with a pond, hills, unique playground equipment and several iconic structures. Terracon’s Tulsa office is proud to have been a part of making this dream of a world-class park a reality. Gathering Place was first imagined by George Kaiser and his family foundation as a welcoming, natural space where members of diverse communities could come together to explore, learn and play. The park opened in September 2018 and got 300,000 visitors the first month.

Gathering Place is a public park that is privately funded through collaboration with more than 80 corporate and philanthropic organizations. It was designed by renowned landscape architectural firm Michael Van Valkenburgh Associates with input from many Tulsa citizens. As with all creative designs that involve the built environment, the engineering details beneath the landscaping, bridges and buildings of Gathering Place are what make it special. Terracon’s engineers partnered with the park architects to turn creative ideas into reality.

Terracon was involved early in the park’s construction, working with the architect during the design phase in 2013. Our team was responsible for all the geotechnical borings required for the original concept of the park, including bridges, city roadways, a lodge, boat house, pond and parking lots. A large amount of fill was required to add terrain to the park, including geogrid-reinforced steep hills that were constructed from river sediments.

Understanding the scope of Gathering Place and being able to make adjustments to changing design requirements during construction were the key to success on this one-of-a-kind project.

Tulsa Gathering Place tunnel


“Gathering Place is a project that required as much, if not more, communication as a tall building project,” said Mike Homan, P.E., Tulsa office manager. Unique design elements such as the construction of tall geogrid-reinforced interconnected embankments with steep slopes necessitated iterative design changes to facilitate revisions to pathways and buildings as the park design evolved. Homan noted that being responsive to design changes made by the architect  kept the project moving forward on schedule.

The park project required resources from the local Tulsa team as well as Terracon’s geotechnical engineers in Phoenix, who led the design of the geogrid-reinforced embankments and slopes, and drillers from three states. In addition to the tall hills that were created from soft sediments, Terracon collaborated in the design and construction of four land bridges that are unique in the U.S. To accommodate construction of the three-story tall boathouse and to eliminate loads on the structure, Terracon designed wire basket faced load relief walls that were constructed next to the below grade boat house walls.  Utilizing this approach to retain fill away from the structure, resulted in a more economical design of the foundation walls of the boathouse. We also tested unique rock anchors used to attach large slabs of cut sandstone to buildings, walls and bridges.

Tulsa Gathering Place Park

Terracon’s creative solutions to the park’s design challenges, as well as its national resources, enabled us to contribute to a world class riverfront park that welcomes Tulsans and people from everywhere to explore, learn and play.


  • Voted USA Today’s Best New Attraction of 2019
  • More than 100 unique experiences to be enjoyed, including attractions, sports and wellness opportunities, art and dining.
  • 66.5 acres now; 100 acres when complete
  • 400 species of plants
  • 120 feet of suspension bridges
  • 13 miles of sidewalks
  • 11  slides

Major attractions:

  • Chapman Adventure Playground
  • Williams Lodge
  • ONEOK Boathouse
  • Skywalk Forest

For more information, visit: