Friday - October 17, 2014

Gladstone Pipeline and River Intake Construction Update

The large red crane was taken apart and loaded onto trucks last week. It has been replaced with a smaller crane that will be on site for the remainder of construction.

The large barge carrying 250 foot lengths of pipe arrived on Thursday. These pipe strings will be welded together over the next 1 ½ weeks into a single, 3800 foot long pipe, in preparation for pullback.

This update includes construction work in the following areas. Read below for specific information on each location:

  • River Intake Pump Station (RIPS)
  • Gladstone pipeline work
  • Horizontal directional drilling (HDD) under the Willamette River in Meldrum Bar Park

For the most up to date information on construction and road closures, please visit work underway or contact us.

River Intake Pump Station (RIPS)

Mechanical, plumbing and electrical work is continuing within the new structure. Through next week, crews will continue placing architectural metal panels on the outside of the structure. Last week, the large 777 crane was dismantled and removed. It has been replaced with the smaller 222 crane which will remain for the duration of the project. The metal roof is now being installed and the large fish screens will arrive in late October. The new fish screens, along with the recently completed river channelization, will make this river intake much more “fish friendly” than the existing intake.

Gladstone pipeline work

Microtunnel shoring at Jensen Road pathway is now completed. When a crew and the tunnel boring machine are available, the shaft will be excavated and boring will begin. It is estimated that this work is at least a month away. Microtunneling (a trenchless installation method) is being used to help eliminate traffic impacts on McLoughlin Blvd. and River Rd.

This week, crews have continued to lay pipe along Bellevue Avenue and have crossed the intersection at Dartmouth Street. Crews will proceed to Exeter Street and will make as much progress as they can before stopping, to install the pipeline crossing at Portland Ave. and Clackamas Blvd. the first week of November. This work will involve a large excavation at the intersection, which will be closed to all traffic while this work is occurring. Access to the river intake work site will be maintained. The crossing work is expected to take at least three weeks to complete.

Please watch for signage directing you safely around all pipeline work. Also, there are large pieces of equipment on the roadway, so please avoid the one block work areas during construction.

Some key information about construction:

  • Traffic detours and temporary closures will be in place, usually one block at a time
  • Equipment and material (e.g., gravel, pipe, etc.) will be stored and parked in the right-of-way
  • No on-street parking in the one block closure zone during construction
  • Truck traffic and construction noise during construction

Work hours are 7 a.m. to 6 p.m., Monday through Saturday.

Horizontal directional drilling under the Willamette River in Meldrum Bar Park

“Pullback” of the pipe is scheduled to begin October 28, lasting 1-2 days. A drill rig will pull the pipe through the hole under the river, from Meldrum Bar Park to Mary S. Young Park. During this phase, operations must occur round-the-clock, in a continuous fashion, to ensure the hole does remains open. The large derrick barge has arrived on the river at Meldrum Bar Park with the pipe. Welding the 250 foot long pipe strings began on Thursday this week and will continue until prior to pullback on October 28.

Due to the 24-hour operation during pullback, nearby neighbors may hear some noise from truck traffic and diesel engines, as well as see lighting at the entry and exit sites on either side of the river.

For more information, please visit the “all work underway” map, email lotwater@ci.oswego.or.us, call the hotline at 503-697-6502.