The Weldon Spring Site Interpretive Center delves into the history of the area and details the cleanup process that resulted in construction of the 41-acre engineered disposal cell. The interpretive center is a result of the U.S. Department of Energy Office of Legacy Management’s continuing commitment to maintaining a strong community partnership, and it serves to communicate the legacy of the Weldon Spring Site to future generations.

Public Programs and Events

Welcome to Weldon

Come for a tour and stay for the fun! Join us Sept. 3 and 4 for a journey through time on a guided tour of the new Weldon Spring Site Interpretive Center. Tours will begin at 11:00 a.m. and 2:00 p.m. both days. Tours are expected to last 1 hour.

Self-guided STEM activities for all ages will be available from 10:00 a.m.– 4:00 p.m. both days.  

Registration is required for the tour. To reserve your spot, call (636) 300-2601 or email WSInterpretiveCenter@lm.doe.gov and let us know how many guests are coming.

Weldon Spring Site Interpretive Center
Weldon Spring Site Interpretive Center.

The Weldon Spring Site Interpretive Center offers occasional public programs and events in addition to the trails and disposal cell areas that are open seven days a week. All events are free of charge.

Private programs specifically designed to meet your organized group’s needs may also be requested with advanced notice.

Call (636) 300-2601 or email us for additional information.

Disposal Cell and Trails

NOTICE: The stairs to the top of the Weldon Spring Site Disposal Cell are closed for repair.  Access to the Hamburg Trail and native wildflower garden paths, and the path around the disposal cell, are still open.

Weldon Spring Site Hamburg Trail

Adjacent to the interpretive center is the 75-foot-high Weldon Spring Site disposal cell. The engineered multi-layered disposal cell covers 41 acres and is a highlight for visitors. A viewing platform on top of the cell offers visitors a panoramic view of St. Charles and St. Louis Counties and the surrounding Howell Prairie. In addition to walking up the stairway and sloped path to the top, visitors may also walk the 1-mile road around the base.

The old “haul road” that used to carry waste materials to the disposal cell site during remediation is now part the Hamburg Trail. This 6-mile multiuse trail through the Weldon Spring Site links to the historic Katy Trail State Park, and a network of trails through Missouri Department of Conservation areas and the Great Rivers Greenway. Historical markers help connect visitors to the history of the Weldon Spring Site and its purpose, then and today.

Howell Prairie and Native Plant Education Garden

Weldon Spring Prairie of Flowers

Howell Prairie is a 150-acre area seeded with more than 80 species of prairie grasses and wildflowers surrounding the Weldon Spring Site in St. Charles County, Missouri. This emerging prairie, named for the leader of a group of early settlers, is one of the largest native plant gardens in the St. Louis area. Warm season grass prairie was historically a dominant natural community in this area.

The U.S. Department of Energy (DOE) is revitalizing the Weldon Spring Site to a natural and native ecosystem as part of its long-term commitment as a responsible steward of the land. The design for the prairie began in the early 1990s when native grasses were deemed to be the best solution for restoration of the site following remediation. In spring 2002, the first prairie grasses and forbs were planted. Development of the prairie as an outdoor classroom continued in 2004 with the planting of approximately 80 species of native forbs and prairie grasses, overseeding activities, and measures to control invasive exotic weeds.

The Jeannie Moe Memorial Native Plant Educational Garden is an inviting 8-acre area of plants native to Missouri. Walking paths with benches meander through the garden where occasional signs identify various plants. The area is often used for school programming as well.

Visitors, local residents, and students hike and bike the Hamburg Trail through the site, go to the top of the 75-foot-high disposal cell to view the prairie in bloom at various times of the year, and travel the 1-mile loop around the disposal cell to view the prairie at eye level.

Prominent Prairie Forbs Planted at Howell Prairie

What’s Blooming? – A Guide to Wildflowers in Bloom at the Weldon Spring Site

Weldon Spring Site Interpretive Center and Office Complex

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The Weldon Spring Site’s new interpretive center in St. Charles County, Missouri, opened its doors April 14, 2022. The U.S. Department of Energy Office of Legacy Management conducted a ribbon-cutting ceremony to celebrate a brand new exhibit gallery, educational opportunities, and amenities available for the community. The exhibit gallery tells the stories of sacrifice and service for national defense, of commitments to remediation and monitoring, and of restored landscapes for wildlife and recreation.
U.S. Department of Energy Office of Legacy Management

New Weldon Spring Site Interpretive Center and Office Complex – Construction Complete!

Previously, the Weldon Spring Site Interpretive Center was housed in a refurbished temporary building established during remediation. The newly constructed building features a new exhibit hall, 4 state of the art classrooms, and a new auditorium. In the future, spaces will be available at no cost to community and non-profit organizations.

Weldon Spring Interpretive Center New Building
Weldon Spring Interpretive Center New Building Oblique
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A one-minute time-lapse video captures the construction of LM’s new Weldon Spring Site Interpretive Center in Missouri. Under the expert management of the U.S. Army Corps of Engineers (USACE) St. Louis District, construction of the building began in May 2019 and was completed in February 2021. The new center is an example of LM’s continuing commitment to maintaining a strong partnership with the community.
U.S. Department of Energy Office of Legacy Management