City of Coos Bay release - Water Main Installation Across Central Avenue at N 11th Street. The Coos Bay-North Bend Water Board will use trenchless technology to install a 2-inch water main across Central Avenue at N 11th Street in Coos Bay. Work will begin on February 12th and continue through Friday, February 13th. The construction activity requires the temporarily closing the right lane of Central Avenue from N 10th Street to N 11th Street. In addition, N 11th Street between Commercial Avenue and Central Avenue will be closed to through traffic. The Water Board requests that citizens use caution when passing through the construction zone. Should you have any questions or want more information, please contact the Water Board at (541) 267-3128.