The City and County of Honolulu's Department of Environmental Services are working on 14 major sewer projects this month that could involve delays for motorists.

The projects are part of $499 million of ongoing wastewater projects to update the city's aging sewers system.

The projects are:

» Halona Street Relief Sewer - Installation of a new sewer line and manholes along Olomea and Kohou streets, from Olomea Street to North King Street.

» Peterson Lane and Pua Lane sewer rehabilitation - Installation of a new gravity sewer line on King Street, Peterson Lane, Dillingham Boulevard and Pua Lane.

» Wanaao Road/Keolu Drive reconstruction sewer - Installation of a gravity sewer line along Wanaao Road between Palawiki and Papalani streets.

» St. Louis Heights sewer rehabilitation - Installation of cured-in-place pipes along roads and easements, sewer laterals and manhole rehabilitation in areas along Bertram Street and St. Louis Drive.

» Kalaheo Avenue-Mokapu Boulevard-Aikahi Loop sewer rehabilitation - Spot repair of a 66-inch sewer starting on Mokapu Boulevard.

» Kapiolani Boulevard water and sewer system improvements - Installation of gravity lines along Kapiolani Boulevard between Piikoi Street and Kalakaua Avenue and a new force main along Kalakaua Avenue between the Ala Wai Bridge and Kapiolani Boulevard.

» Kuliouou Sewer rehabilitation - Installation of cured-in-place work along Moomoku Place and Elelupe Road.

» Alii Shores Sewer rehabilitation - Installation of cured-in-place pipe along Wena Street.

» Waipahu Street/Plantation Village sewer reconstruction - Installation of gravity sewer line within Plantation Village.

» Kalihi/Nuuanu Area sewer rehabilitation (all phases) - Sewer rehabilitation work on Kuakini Street, Liliha Street, Stillman Lane, Nuuanu Avenue, Hialoa Street, School Street, and Madeira Street.

» Sewer manhole and pipe rehabilitation at various locations - Rehabilitation of sewer manhole on Kamehameha Highway near Kaahumanu Street.

» Sand Island Basin miscellaneous sewer rehabilitation, phase 1 - Installation of cured-in-place piping along Akamu Place in Nuuanu.

» Kailua/Kaneohe reconstructed sewer rehabilitation - Spot repairs along Papalani Street, Wanaao Road, Pamaele Street and Popua Loop

» Kapiolani area revised sewer - Installation of gravity lines along Rycroft Street and Cedar Street.