Engineering a Stronger Community: Providing a more efficient transportation link in one of Missouri’s fastest growing counties

This project upgrades the section of the Page Extension between Mid Rivers Mall Drive and Kisker Road to freeway standards. The design required an accelerated schedule in order to maintain the federal funding. CDI was added to the design team because of our ability to work seamlessly with other companies in a collaborative manner. CDI provided assistance with bridge and wall survey submittals, and traffic control plans for this project.

Client: EFK Moen
Owner: Missouri Department of Transportation
Year: 2010
Length: 1.5 miles
Cost: $24.5 Million

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Engineering a Stronger Community: Providing new storm sewers to relieve flooding and reducing the amount of flow towards sewage treatment plants

This project consisted of two separate storm water projects in the Coldwater Creek Watershed.
  • Goodale and Verona Storm Sewer Improvements: CDI designed 1,700 feet of new 12 to 42-inch storm sewer. This included a 404 Nationwide Permit from the Corp of Engineers.
  • Midland & Angelo Storm Sewer Improvements: CDI designed 2,255 feet of new 12 to 36-inch storm sewer and recommended the installation of flood proofing at four homes.

Client/Owner: Metropolitan St. Louis Sewer District
Year: 2008
Length: 4,000 feet
Cost: $1,550,000

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CDI developed online GIS mapping and data collection for Effingham County in Illinois. CDI expanded their GIS usage by developing data collection schemes that allow them to inventory culverts, street signage, striping using a mobile applications for real-time data collections with iPad tablets. This approach will allow Effingham County to inventory their culverts, while minimizing data entry errors during filed inspections and improve productivity. CDI also provided training to in-house personnel so that they can easily maintain the data and utilize the information for future planning and improvements. CDI utilized an engineered approach to the development of the GIS mapping and data collection applications to allow for easy expansion as the County’s needs grow.

Client: Effingham County
Year: 2014

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Champ Clark Bridge 
US Route 54 over the Mississippi River

CDI is providing significant Phase II & III engineering services to HNTB for structural design and review services. The bridge is an 8-span, 2-unit structure, with a 5-span river unit consisting of 12’ steel plate web depths and spans as large as 420’ long. The approach span consists of a 3-span, 78” NU-girder bridge on steel pipe pile bents. CDI worked alongside HNTB personnel inside their offices.

Client/Owner: HNTB (MoDOT/IDOT)
Year: 2018
Cost: $60,000,000

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Engineering a Stronger Community: Improving safety and efficiency through a heavily travelled corridor

The City of Maplewood was in need of implementing a plan for roadway widening, sidewalk improvements, and landscape enhancements to Manchester Road. CDI was contracted to supplement the previous surveys with additional topographic and boundary information. In addition CDI was retained to prepare easement exhibits and legal descriptions. CDI also provided engineering support and construction inspection.

Client: Horner & Shifrin
Owner: City of Maplewood
Year: 2012
Cost: $1 Million

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UMSL’s new College of Optometry Patient Care Center opens to serve eye patients from around the community. The new two-story, 35,000 square foot facility will house clinical space for adult and children’s eye care services. The building also features 13,000 square feet of additional support space the building offers, partnerships with nursing, dental and other health-care providers.

CDI was contracted to perform all site civil engineering services for this project. CDI used its experience working at the UMSL campus and the St. Louis area to provide quick coordination with utility companies and MSD. The site features a large parking area with pedestrian drop off at the building entry. The site also features storm water bioretention basins that act for filter storm water before it enters the storm sewer system. The site was designed to be fully ADA compliant. The building location and elevation, as well as the site grading, was designed to be ready for a future building addition. CDI provided construction drawings (site, utility, grading), specifications and cost estimate for public bid.

Owner: University of Missouri-St. Louis, HOK
Year: 2016
Size: 48,000 sq. ft.
Cost: $15.2 Million

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