The closure will allow New Braunfels Utilities crews to install bore pits beneath the Union Pacific Railroad tracks as part of the work to install the 24-inch water line along Castell Avenue.
At least one side of the street will remain accessible to pedestrians, according to a press release from NBU, and updates can be found on the NBU website.
NBU began construction on the Castell Avenue project in May.
Once complete, the project will provide an additional 24-inch transmission main needed to transport water from downtown New Braunfels to the County Line storage tank and surrounding areas.
The project has been divided into two sections and two different contractors are completing the work.
The western portion of the project extends from the intersection of San Antonio Street and Castell Avenue to the intersection of Torrey Street and Elizabeth Avenue. The eastern section extends from the intersection of San Antonio Street and Castell Avenue to the I-35 frontage road.
Temporary road closures are anticipated throughout the project, though the majority of the work will be conducted overnight and crews will not work in the downtown area on weekends, according to NBU.
Funding for the project is part of $14.7 million NBU has budgeted to upgrade existing water and sewer infrastructure throughout the city.