South Lubbock Drainage Improvement Project

Completed in 2003 by Southland Contracting, the South Lubbock Drainage Improvement Project consisted of installing approximately 12,100 linear feet of 72-inch internal diameter (ID) Hobas sewer pipe using two pass tunnel lining. The project also involved the excavation of 622 linear feet of 60-inch tunnel, 603 linear feet of 48-inch tunnel and 625 linear feet of 42-inch tunnel. Portions of rock had a compressive strength ranging to 17,000 psi. Groundwater varied between 20 to 400 gallons per minute.