Missoula Water, along with Western Excavating, will begin work on Monday to replace a 6-inch kalamein water main originally installed in 1928 in West Broadway through the Orange Street intersection. This project will run from July 30 through Aug. 9.
Kalamein is thick-walled galvanized steel piping commonly used around the turn of the 20th century. Missoula Water is focusing its replacement projects on kalamein pipe because of its tendency to leak as it ages, particularly at the joints and seams.
This project is part of a water main replacement program implemented by the City-owned water utility to reduce leakage and replace aging water mains. Other 2018 water infrastructure projects have included 4th Street, Gerald Avenue, Stoddard and Defoe, Howell Street, and South 2nd Street. Capital reinvestment into the system in the past year has been $4.2 million, replacing or extending 11,417 feet of pipe and adding 18 additional fire hydrants.
To minimize disruption of daytime traffic, the work will occur at night between the hours of 8 p.m. and 6 a.m. Western Excavating intends to have the street repaved by the evening of Monday, Aug. 6. Cleanup activities will continue through Aug. 8. There will be traffic lane shifts during the night, and southbound Orange Street will be detoured to Pine Street and Owen Street after 10 p.m. All excavations will be backfilled by 6 a.m., and all traffic lanes will be reopened each day, barring any unforeseen issues.