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Missouri Department of Transportation. STAKEHOLDER INTERACTION AT CLOSED SITES. Weldon Spring Site Weldon Spring, Missouri. Kevin Wideman Sr. Environmental Specialist. INTRODUCTION. Weldon Spring is the site of a former chemical and radiological facility

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missouri department of transportation
Missouri Department of Transportation


Weldon Spring Site

Weldon Spring, Missouri

Kevin Wideman

Sr. Environmental Specialist

  • Weldon Spring is the site of a former chemical and radiological facility
  • This site included a manufacturing facility with disposal ponds on site
  • It also included a quarry that was used for disposal of waste
  • MoDOT has two highways, Routes D and Route 94 that traverse the area
  • MoDOT also has a maintenance lot next door to the disposal cell
weldon spring site6
Weldon Spring Site

Route D Culverts

Disposal Cell

MoDOT Maintenance Facility

Route 94 Culvert

Missouri River


route 94 culvert
Route 94 Culvert
  • Installed by the army under 40 feet of fill
  • Consists of corrugated metal that is rusting
  • Culvert is contaminated
  • Removal costs about $1 million
  • Fix and leave in place with future replacement when needed

60 inch X 225 feet

route 94 immediate repairs
Route 94 Immediate Repairs

Culvert before repairs

Culvert after repairs on 8/25/10

route 94 future needs
Route 94 Future Needs
  • After collapsed end was cut away
  • Water had undercut the end
  • Culvert still intact but will need replacement or lined in the future
route 94 culvert downstream
Route 94 Culvert Downstream
  • Fill is washed away from around the culvert
  • This section broke away
  • Isn’t necessary for integrity of the highway
  • DOE’s discretion on what to do with it
route d culverts
Route D Culverts
  • Installed by Army
  • Consists of corrugated metal that was rusting
  • Believed contamination is under the culverts
  • Removal and replacement to be done next year
  • Cooperative coordination between DOE and MoDOT to replace

2 - 60 inch X 82 feet

route d culverts13
Route D Culverts
  • MoDOT’s contractor will uncover the culverts
  • DOE contractor will remove along with any contaminated soil
  • MoDOT will supply fill material
working together
Working Together
  • Missouri is the “Show Me State”
  • We need to see to accept
  • Several Missouri state agencies were involved
  • MoDOT, DOC, DNR, DNR Parks
  • DNR is the central contact
central contact
Central Contact
  • One central state contact
  • Everyone was kept informed
  • Easier to work with DOE and for DOE to work with the agencies
  • MoDOT concerned with protecting our employees and the public
open comunicaton
Open Comunicaton
  • MoDOT assigned one central contact within the department
  • Maintenance people were briefed
  • Design and construction to coordinate future efforts
  • DOE provided educational opportunities for employees
future route d improvements
Future Route D Improvements
  • Widen Route D next spring
  • Culvert replacement will be coordinated
  • Route D will be shut down for two days
  • MoDOT’s contractor will remove the overburden
  • DOE will remove the culverts and any contaminated soil
  • MoDOT will replace the fill and culverts and finish the project
future route d improvements18
Future Route D Improvements
  • Disposal of the culverts will be determined
  • If they are not contaminated they will be recycled
  • DOE has offered to be present at the pre bid meeting to answer any questions from contractors
future route 94 improvements
Future Route 94 Improvements
  • Route 94 cannot be shut down
  • Shoulders are being added to Route 94
  • Culvert replacement or repair will be coordinated with DOE
  • MoDOT will continue to work with DOE
interpretive center
Interpretive Center
  • DOE’s interpretive center next door has been a great educational tool to educate MoDOT employees