Frontenac Forest Stormwater Improvements

To reduce flooding downstream of a 200-acre watershed, EDM designed enhancements to the existing drainage infrastructure in the Frontenac Forest Subdivision.  The 3-foot wide tie-wall channel was converted to a natural, meandering channel with a 7-foot wide bottom and 2-horizontal :1-vertical side slopes. EDM used a rugged tablet to enhance GPS to collect geomorphic data on each of the four reaches.  

Services Performed: Civil Engineering and Project Management.



APWA Public Works Project of the Year.

ASCE Project of the Year.


Frontenac Stormwater Master Plan & Implementation, Frontenac, MO

EDM performed a stormwater needs assessment. The Program implementation resulted in 20 stormwater management design projects including: Rain garden design; Creek bank stabilization; Roadway sub-surface drainage; Storm sewers; Sediment transport modeling.

Services provided: Civil Engineering.


“EDM Incorporated has provided engineering service to the City of Frontenac in the creation and implementation of our stormwater master plan. Their work in the master plan creation includes city-wide hydrologic and hydraulic studies, development of conceptual solutions, and prioritization of the improvement projects by benefit points with recommendations from the public works committee. EDM has been and continues to produce construction plans and specifications for the conceptual solutions to resolve issues that include structural flooding and eroding creek banks for the entire city. “

“Len Madalon is very good to work with.  The ability to adapt to our resident’s needs/concerns is very important to the city and shows in the finished product of our projects.”

Jeff Wappelhorst, Public Works Director

City of Frontenac


Glen Abbey Restoration, Frontenac, MO


This project resulted from the Stormwater Master Plan project and involved several stormwater improvements including six raingardens, a ConSpan Bridge, bank stabilization, and geomorphic and floodplain studies.


Services Provided:        Civil Engineering


Anheuser-Busch Northeast Campus Site Improvements, St. Louis, MO


Approximately 400,000 SF of existing parking lots and trailer storage lots were reconfigured for employee parking.  Improvements included perimeter security fencing, new entrances, card readers, guardhouse, storm sewer improvements, lighting, landscaping and irrigation.


Services Provided: Civil Engineering, Project Management


Barrett Station Road Improvements,

St. Louis County, MO


Prime consultant for design of 6,500-foot, STP-funded roadway improvement project including addition of turn lane, reprofiling of the roadway, widening to three lanes, storm sewer relocation, sidewalks on both sides, driveway and commercial entrances, retaining wall design, right-of-way plans, legal descriptions, drainage design.


Services Provided: Civil Engineering


Pitman Hill Road Improvements

Weldon Spring, MO


Existing traffic pattern study performed; preparation of a Traffic Circulation Plan, and improvements made to the Pitman Hill-Kisker Road Intersection. Horizontal and vertical alignment problems were addressed and an additional lane was considered based on the usage.  Box culverts and sections of creek relocation work completed in cooperation with FEMA, Missouri DNR and the Corps of Engineers.


Services Provided:        Civil Engineering


Sonderen Bridge, O’Fallon, MO


184-foot long, Category “A” bridge designed to MoDOT and AASHTO standards.

Three, 12-foot wide traffic lanes

Four foot sidewalks on one side and an 8-foot all-purpose trail on the other side.


Services Provided:    Structural and Civil Engineering


Columbia Bottom Conservation Area


The area includes a view of the confluence of the Missouri and Mississippi rivers, over 6.5 miles of river frontage, about 800 acres of bottomland forest and a 110 acre island. Columbia Bottom Conservation Area is in north St. Louis County at the confluence of the Missouri and Mississippi Rivers, the third largest river system in the world, and the largest in North America.  The Corps of Discovery, led by Meriwether Lewis and William Clark, set out from this very spot in 1804.

Design of a river access, confluence viewing area platform, accessible fishing pier, boat ramps and parking lots. Five miles of hiking-biking trails and five miles of roadway facilities can be accessed by car from a five-mile paved road and bicyclists and walkers can use the five-mile limestone biking trail.


Services Provided: Civil Engineering, Full-Time Resident Construction Inspection, Project Management

Award:  ASC E St. Louis Section 2003 Outstanding Civil Engineering Achievement Award


Testimonial:  The Missouri Department of Conservation appreciates the professional manner in which the project challenges were handled and would recommend the services of EDM Incorporated to fulfill your engineering needs.”

Edwin F. Kuhlmann, PE

Project Supervisor, MO Department of Conservation


Hyatt Place – One Civic Square, St. Louis, MO


Services for supporting site development for City Block 207, which includes the conversion of the Municipal Courts to a Hyatt Place Hotel; modifications to 14th Street to create a hotel valet drop-off; construction of mixed-use structure to be known as One Civic Square.


Services Provided:        Civil Engineering


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