Whatcom Creek sewer trunk main

​Project Overview:  EU-0182

This project is to re-line the existing sewer trunk main along Whatcom Creek from Nevada right of way west to the intersection of Holly and Champion. The existing main was installed in 1909.  The goal of the project is to extend the life of the life of the sewer main by re-lining the interior.  Video of the interior of the main verified there is damage to the pipe including holes and cracks.  This project will complete some spot repair as well as install some new manholes to help facilitate maintenance.  The sewer main is not a traditional pipe; it is a custom brick and concrete, egg-shaped conveyance system.  Re-lining this type of structure will require custom shaping of the liner.  The sewer main is adjacent to, and crosses under Whatcom Creek, so ensuring that Whatcom Creek will not be disturbed during construction will be a challenge.  The largest challenge will be to insure the sewer main is operating at capacity during the re-lining process.  The sewer main services a large section of the City and cannot be taken off-line.

Status - April 2019

Accomplishments:  Carollo Engineering, selected as the design consultant, is working on the project design. Field surveys are ongoing, as well as soil assessment for manholes.

Next Milestone:  Complete design, plus a report from Carollo on viable solutionsf or rehabilitizing the existing sewer system.

Project Details

  • Status- Design
  • Contract Awarded - 
  • Contract Amount  -
  • Contactor - 
  • Vicinity Map

Affected Neighborhoods

    City Center; Puget; York

Participating Departments

    Public Works


Sam Shipp, P.E., 
project engineer

Phone: (360) 778-7942  
Email:  sshipp@cob.org

Public Works Contacts