A roadway widening project by the Illinois Department of Transportation (IDOT) has necessitated the relocation of a sewage force main that runs along Allen Road in Peoria.  A less than desirable service history of the existing force main only reinforced the District’s decision to relocate their sewer.

Early coordination with other utility companies and IDOT was required to keep the project moving forward. Easements for the proposed sewage force main alignment were developed and obtained by Maurer-Stutz.  

The Village of Creve Coeur began an exhaustive sanitary sewer system characterization effort as requested by the Illinois Environmental Protection Agency. As part of the update, all wastewater collection facilities including structures and sanitary sewers of various sizes and material types were inspected and documented as part of the system characterization component of the plan.

Furthermore, flow monitoring and hydraulic modeling were performed to verify that the existing wastewater collection and treatment systems were adequately sized to minimize sanitary sewer overflows within the collection and treatment system. This work was conducted over a four year time span. Extensive coordination with the main and local offices of the IEPA also occurred.

The project consisted of the field inspection of manholes and other collection system structures. The project also included the topographic survey of all of these items.  All field data that was gathered was entered into a GIS system for quality control and for easier delivery and integration of the data to the owner which reduced overall cost.  Comprehensive video inspection coordination and review was also conducted with all results being made a part of the Village’s nascent GIS database.

The majority of the sanitary sewers in the City of Marquette Heights are clay pipes dating back to around 1950.  The City was  experiencing numerous problems with sewer main breaks and joint problems.  

In an attempt to repair the deteriorating  sanitary sewers and to reduce high levels of infiltration into the sewer system the City implemented a sewer rehabilitation program.  The project included preliminary cleaning and TV inspection of 34,500’ of 8” to 18” sanitary sewer, installation of a cured-in-place liner, and cutting out the service taps.  Post TV inspection was performed to confirm the integrity of the cured-in-place liner system.

The project was funded by a low interest IEPA loan.

The Greater Peoria Sanitary District decided to utilize this alternative project delivery method of Design-Build (D-B) for the first time.  The District was particularly attracted to the potential advantages of D-B such as condensed project schedule and the decreased potential for change orders.

Maurer-Stutz, Inc. teamed with contractor Wiegand & Storrer, Inc. to provide a comprehensive proposal to the District which included a firm statement of project cost, aggressive project schedule, and workforce profiles.  Our team was selected based on demonstrated competence, professional qualifications, and experience in the design and construction of sanitary sewers.

The project was identified in a previous planning study as the most cost effective alternative for providing sanitary sewer service to areas north and west of Peoria in Growth Cell #1.

The entire project time schedule was condensed considerably as compared to the traditional design-bid-build project delivery process.