Shallow Creek Crossing—Wye Bother? Split It!

The City of Conroe’s Wastewater Master Plan identified the need to improve the flow to the City’s central treatment plant to mitigate the lack of capacity within the collection system. The primary accomplishments of this sewer design project include the expansion of the Lower Stewart Creek interceptor from 48 to 66 in., the installation of a bifurcated wye at the Valwood Creek crossing, and the removal of the Carl Barton Lift Station. These improvements poise the City to accommodate future growth, minimize future maintenance, and reduce excessive expenses. The main challenge of the project was that the design approach was not ideal for the proposed 66-in. gravity sewer crossing of Valwood Creek. To resolve this issue, a fiberglass bifurcated wye was used in place of a large concrete junction structure. The project is currently under construction and should be at substantial completion phase at the time of this presentation.