NE 12th Street AC Water Main and Storm Improvements

Design

Council awarded the professional services contract to the Blueline Group, LLC (now known as Atwell, Inc) in the amount of $178,910 for design and services during bidding for the NE 12th Street AC Water Main and Storm Improvements project at its regularly scheduled meeting on April 3, 2023.

Installation of approximately 1,4710 linear feet of 12-inch and 1,600 linear feet of 8-inch class 52 restrained joint cement-lined ductile water pipes with restrained joint fittings and polyethylene encasement, 15 12-inch gate valves, 10 8-inch gate valves, nine fire hydrant assemblies, 41 1-inch copper water service lines and reconnections to existing private service lines, and nine connections of new water mains to existing water mains.

The project is currently out to bid. Construction is expected to start in summer 2025.

What should the neighborhood expect during construction?

New mains are typically installed using an open-cut construction method by excavating a trench in a section of roadway. Work will be done on weekdays, during the day. Each day, open trenches will be backfilled and covered with temporary asphalt to provide a drivable surface.

There may be temporary lane closures and/or parking restrictions. Where lane closures are required, the contractor will have signs and flaggers to guide traffic safely through the work zone. The contractor will ensure that residents have access into and out of their driveways.

What part of the water pipe will be replaced?

New water mains will be installed within the paved portion of the roadways and approximately 41 water service lines will be replaced from the new water mains to the water meters. 3624 NE 14^th St. and 1324 Queen Ave. NE will require that portions of the water service line on private property be replaced, as the current meter is located within private property.

Will there be contractors working in my yard and/or property?

Because most water meters in this project are currently located in front yards, the contractor will need to do work in that area to replace the water meter and service line. Even though the meters are in yards/lawns, most of them are within the city right-of-way (ROW), and not on private property. To find out where your property line is located, contact the project manager for a copy of the construction plans. 

What part of the storm system will be improved?

New storm drain pipe, catch basins, and manholes will be installed within NE 12^th Street and Union Ave. NE.

Why is the sewer main not being replaced as part of this project?

The wastewater utility will be rehabilitating sections of sewer main along NE 12^th Street and Queen Place NE this year, as part of the Renton Highlands Sanitary Sewer Rehabilitation Phase 3 project. The method of rehabilitation is called Cured-in-Place Pipe Lining (CIPP). The contractor will install a liner inside the existing pipe and use steam to adhere it to the inside walls of the pipe. Once the liner cures, it will harden and act as a new pipe within the old pipe.

Will my water meter box be moved?

It is anticipated that the water meters will be installed as close to the existing meter box as possible, within the city ROW. New meter box covers in pedestrian paths of travel will be non-slip in compliance with ADA and city requirements.