State Street Sewer Project

The City’s 2013 Wastewater Master Plan (WWMP) identified the Lakewood Sewer Trunk Rehabilitation (located on State Street) as one of several pipeline repair projects. The wastewater mainline was identified as having less than 10 years of remaining useful life. Staff was hopeful the issues could be addressed via pipe-lining in order to minimize costs and impact. However, once the design phase started, the pipe was found to have several significant sags, or low spots, which can lead to blockages and overflows. These sags can only be corrected through open excavation and replacement of the pipeline.

This project will replace the sewer pipeline restoring useful life, reducing risk of overflows, and minimizing infiltration and inflow (I/I) into the City’s sewer system.

The project limits are along State Street/Hwy 43 from North Shore Road to just north of Foothills Road. The scope of work includes:

  • installing approximately 850 linear feet of new sewer mainline
  • installing seven new manholes
  • restoring the disturbed area (asphalt, pavement markings, landscaping, etc.)


Construction started in late June and is expected to continue through early fall 2022. To minimize impacts to the traveling public, this work is predominantly being constructed at night between 9 p.m. and 6 a.m. 

Project Updates: 

December 15, 2022 - Pavement Striping 

Crews are scheduled to apply new pavement striping on State Street/Hwy 43 tomorrow, Friday 12/16 between 9 a.m. – 3 p.m. Northbound travel lanes will be reduced. Please expect minor delays on State Street/Hwy 43, between McVey Avenue and C Avenue.

This work is weather dependent. Crews are taking advantage of the optimal weather window.

Thanks for your patience!

October 10, 2022
Expect Delays for Upcoming State Street Weekend Paving Work 10/15-10/17

Beginning Saturday night, October 15 at 9 p.m., crews are expected to start a period of 24-hour continuous work to pave a portion of State Street (Highway 43) between Northshore Road and Foothills Road. Construction is expected to occur until as late as 6 a.m. on Monday, October 17.

During this timeframe, the traveling public should expect major delays and plan extra travel time on State Street (Highway 43) and A Avenue, in downtown Lake Oswego. Please watch for signage and obey flaggers directions. If possible, please avoid the area, or use alternate routes.

Key information:

  • Paving activities will be centered between Northshore Road and Foothills Road.
  • Travel lanes will be shifted and reduced between A Avenue and Leonard Street.
  • One travel lane in each direction is expected to remain open during daytime work hours.
  • At times, the signals at State Street/Northshore Road and State Street/Foothills Road will be turned off and flaggers will direct traffic.
  • During low traffic volumes at night, traffic may be reduced to one lane with flaggers.
  • There will be periods where traffic will be traveling on rough ground, gravel or rock after they have prepared the roadway for paving – please drive cautiously.
  • Residents and businesses should expect an increase in noise and vibration during the paving operation, as there will be a lot of trucks, large equipment, and vibratory rollers compacting the new asphalt.
  • During the paving work, the public parking lot at Foothills and State Street will be completely closed as equipment will be staged in the lot.

The 24-hour paving timeframe, as well as the dates and times, have been approved by ODOT. 

Paving schedules are weather dependent and subject to change.

August 12, 2022

Since late June, construction has been making progress on State Street. Crews are about halfway done with installing the critical sewer pipe. They originally started near the railroad tracks, heading south. They are now past the Foothills intersection, approaching the North Shore Road intersection.

As with all projects, you never know what to expect until you open the roadway up. What is very unique about this project is the sheer deepness of the pipe. Challenges on this project have included:

  • night work on a major roadway
  • digging a very deep 20 ft. sewer line
  • unforeseen/unlocated utilities and conflicts
  • large boulders and soft soils resulting in wider trenches, potential trench cave-ins, and more steel sheets on the roadway surface
  • working around summer concerts and events to not impede traffic flow

To date, crews have removed about 300 cubic yards of boulders from the trench! Check out the images of some of these large boulders below.

Despite the challenges, construction is on schedule to be complete later this summer. Work hours remain as Monday to Friday, 9 p.m. – 6 a.m. with lane closures.

Thank you for your patience while we install this critical infrastructure!

June 20, 2022

Night work starts tonight, 6/20, on State Street. Work hours are 9 p.m. - 6 a.m. Monday to Friday. Lane closures will be in place and traffic will be shifted. Plan ahead for travel delays. 

Construction is expected to take up to three months to complete. Schedules are subject to change.

May 10, 2022

In early June, crews expect to begin installing a new major sewer pipeline on State Street between Foothills Road and Northshore Road. To minimize impacts to the traveling public, this work will be conducted at night. Key information:

  • Typical work hours are Monday to Friday between 9 p.m. and 5 a.m.
  • During work hours, lane closures will be in place and traffic will be shifted. Flaggers may direct traffic.
  • Access will remain open to businesses and emergency services at all times.
  • Night work can be noisy with saw cutting, jack hammers, rock excavation, back-up alarms, truck traffic, and other equipment.
  • Steel plates may be placed in the roadway and equipment stored on side streets.
  • Please expect delays, plan extra travel time, follow traffic signs, and watch for flaggers.

Construction is expected to take up to three months to complete. Schedules are subject to change.

Thank you for your patience and understanding during construction.

April 14, 2022

City Council awarded a public improvement construction contract to Icon Construction & Development on April 5, 2022. 

Construction is expected to start in spring 2022 and take a few months to complete. Per ODOT requirements, work will be conducted at night to minimize impacts to the traveling public. 

Schedules are subject to change. 

May 10, 2021

Wallis Engineering has been selected as the designer for this project.

March 31, 2021

The City is currently soliciting a scope and fee from consultants for this project. The City anticipates awarding the contract for construction in May of 2022.  Construction is expected to begin in summer 2022.

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Project Details
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Project Contact: 

Javier Moncada, Project Construction Manager

(503) 635-0261