Gladstone Pipeline and River Intake Construction Update
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
- Microtunnel at Jensen Road pathway
- Horizontal directional drilling
River Intake Pump Station (RIPS)
Mechanical and electrical work is continuing within the new structure. Throughout this month, crews will continue placing architectural metal panels on the outside of the structure.
In early October, the large red crane will be removed from the site and replaced with a smaller crane.
Crews removed all of the super sacks (large sandbags) before the in-water work period ended. And, channelization was successfully completed with excellent reports.
Gladstone pipeline work progressing north on Bellevue Avenue toward Exeter Street
Placing steel shoring to protect trench
This week, crews have continued to lay pipe along Bellevue Avenue, are nearly complete with the intersection at Berkeley Street and expect to reopen the intersection this evening. Next week, crews will continue working along Bellevue Avenue towards the intersection of Clarendon Street. By early October, crews expect to be working at the intersection of Exeter Street and Bellevue Avenue.
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. There is no work planned for Saturday, September 20th.
Microtunnel at Jensen Road pathway – site preparation and equipment mobilization
Over the next month, crews will begin mobilizing equipment and preparing the site for the microtunnel shaft at the Jensen Road pathway, near River Road. Once equipment is in place, crews will use an auger rig to install piles which will support the tunneling shaft. An excavator will then remove soil and dirt before placing the tunnel boring machine in, which will bore a tunnel under River Road and McLoughlin Boulevard. Microtunneling (a trenchless installation method) is being used to help eliminate traffic impacts on McLoughlin Blvd. and River Rd.
Horizontal directional drilling under the Willamette River in Meldrum Bar Park
Work is progressing well on upsizing the hole. More passes continue to be made with larger drill bits (or reamers) so that the hole is large enough for the water pipe to be pulled through. Crews expect to complete the final 54-inch ream pass by early October.
“Pullback” of the pipe is estimated to occur in mid-October, and could take two to five 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 around-the-clock, in a continuous fashion, to ensure the hole does remains open. More information about schedule and timing will be available later this month.
We apologize for the inconvenience this work may cause and thank you for your patience as construction progresses.