In a recent government meeting, officials discussed a significant infrastructure project aimed at addressing combined sewer overflows (CSOs) in the St. Louis region, particularly focusing on University City. The project, which involves the construction of a deep storage tunnel and associated near-surface sewers, is designed to improve water quality by preventing untreated sewage from entering local waterways during heavy rainfall.

The proposed tunnel will stretch approximately six miles, running from the southern part of St. Louis to University City, with a diameter of 18 feet. It will feature multiple drop shafts to facilitate the flow of combined stormwater and wastewater into the tunnel for treatment. The project is expected to benefit several municipalities, including Maplewood, Richmond Heights, and Clayton, as it targets the largest CSOs contributing to pollution in the River De Pere and its tributaries.

Officials emphasized the importance of minimizing disruption to residents and private properties during construction. The tunnel alignment has been strategically planned to utilize public rights-of-way, thereby reducing the need for easements. The project is currently in the predesign phase, with construction anticipated to begin around 2031 and completion required by 2039, in compliance with a consent decree.

Two potential sites for the retrieval shaft, which will serve as both an intake point and a location for the tunnel boring machine's removal, were presented. The first site, adjacent to the Purdue apartment complex, is favored for its engineering advantages, despite the need for resident relocations. The second option involves the existing U-Haul facility, which would also impact local businesses but requires fewer relocations.

The meeting concluded with a call for community input on the project, highlighting the importance of public engagement in the planning process. As the region moves forward with this critical infrastructure initiative, officials remain focused on enhancing water quality and mitigating flooding risks associated with the aging sewer system.