News release Water Board. The Coos Bay-North Bend Water Board will be replacing a water main on North 8th Street in Coos Bay from Koosbay Boulevard to Date Avenue. Construction work will begin the week of August 14th. The anticipated completion date is November 10, 2017. The Water Board’s contractor, Knife River Materials, will work Monday through Friday between the hours of 7 a.m. and 6 p.m. The contractor will close North 8th Street between Koosbay Boulevard and Hemlock Avenue during installation of the water main on that block. Local access to the closed street will be maintained at the intersection of North 8th Street and Hemlock Avenue. Motorists are encouraged to use alternate routes when practical. Local access and access for emergency vehicles will be maintained during construction. Any questions can be directed to the Coos Bay-North Bend Water Board at 541-267-3128.