Crews begin boring under railroad tracks on Bonita Road next week
Tigard Pipeline and Bonita Pump Station Construction Update
This construction update includes all work in Tigard for the project.
Read more for specific information on each location:
- Bonita Road Pipeline
- Milton Court
Bonita Road Pipeline
Crews have begun the initial preparations for tunneling under the railroad tracks on Bonita Road. Next week, crews will place concrete barricades around the work site and begin excavating a shaft in the center lane of Bonita Road near 74th Avenue. This shaft will be used to tunnel the pipeline underneath the railroad tracks using an auger bore. The work site will be present 24 hours a day, seven days a week for about two months. While it is in place, there will be no left turns permitted from 74th Avenue onto Bonita Road. Two-way traffic will be maintained, however, and traffic control devices will direct vehicles around the site. This area will also house a large crane and excavator.
Bonita Avenue and 74th Businesses: If you have any large deliveries arriving during this time that will need special accommodations, please contact the Lake Oswego Tigard Water Partnership at 503-697-6502 so we can coordinate them with the contractor.
After crews begin tunneling under the railroad tracks, regular pipe installation will resume on Bonita Road, between 74th and 72nd Avenues. Work hours are 8 p.m. to 5 a.m., Monday through Friday. Crews are expecting to install about 50 feet of pipe each night. As they install the pipeline, the road will be temporarily patched. Final paving will occur after the pipe is pressure tested and disinfected, likely in early fall 2015.
Crews poured new curbs and ADA ramps on Milton Court, and finished the final paving from the pump station to across the intersection of Bonita Road and Milton Court.
A special thank you to the Milton Court businesses! We appreciate your patience with crews, flaggers and equipment in the road as the pipeline was installed. Crews have officially finished working under Milton Court!
The remainder of Bonita Road will receive a final paving after pipeline construction is complete, and the pipes have been tested and chlorinated.
About Bonita Pump Station
The Bonita Pump Station will connect with several local water systems including Lake Oswego, Portland and Washington County. This supply collaboration will keep Tigard protected should one water supply become interrupted. Completion is expected in fall 2015.