Tunneling

North Creek Interceptor Sewer Completion

The North Creek Interceptor Sewer is a 2-mile pipeline that has served the Bothell area continuously since 1970. This sewer line has been generally well utilized; however, recent issues with the sewer as well as anticipation for population growth pushed King County to improve its water and sewage infrastructure. One of the projects was the … Continue reading North Creek Interceptor Sewer Completion

OHSU Center for Health & Healing South D/B Tunnel

Oregon Health and Science University (OHSU) is a well known academic institution providing comprehensive health care service as well as educating health professionals and scientists on leading-edge patient care, community service, and biomedical research. OHSU has been doing much good for the area through medical support and is involved in numerous researches, including cancer research. … Continue reading OHSU Center for Health & Healing South D/B Tunnel

Price Agreement for Urgent Rehabilitation of Sanitary and Storm Sewers (PAURSS)

The City of Portland was dealing with an aging sanitary and storm sewer pipelines, which requires immediate rehabilitation. Due to the nature of the project, The City of Portland needed a contract that would move faster than typical contracts, thus shortening the time to move from Project Identification to Issuance of Notice to Proceed. The … Continue reading Price Agreement for Urgent Rehabilitation of Sanitary and Storm Sewers (PAURSS)

Kaneohe-Kailua Sewer Pipeline

 The Kaneohe/Kailua Sewer Tunnel increased the reliability of the aging Windward Oahu sewerage system by conveying flows by gravity from the Kaneohe Wastewater Treatment Plant to the Kailua Regional Wastewater Treatment Plant, replacing an existing pump station and force main system. Additionally, the tunnel will store wet weather flows during heavy rain storms. JWF was … Continue reading Kaneohe-Kailua Sewer Pipeline

Southwest Pipeline Project – Raw Water Intake Caisson, Intake Pipe & Screen

The Southwest Pipeline Project (SWPP) is a regional rural water distribution system which provides potable water service for both domestic and livestock use to the residents of southwest North Dakota. Located adjacent to Renner Bay in Lake Sakakawea in North Dakota, the project site is approximately 300 feet from the banks of the bay. The microtunnel … Continue reading Southwest Pipeline Project – Raw Water Intake Caisson, Intake Pipe & Screen

Ballard Siphon Replacement Rebid

This project included construction of launch and retrieval shafts and 2,100 feet of 114-inch segmentally lined tunnel with an 85.5-inch diameter final liner. Additionally, two existing 36-inch wood stave pipelines were slip-lined with steel liners. Common when the siphon was originally constructed, the original pipes were similar to wooden barrels with metal compression bands holding the … Continue reading Ballard Siphon Replacement Rebid

Santa Ana River Interceptor (SARI) Relocation – SARI Mainline Project

Designed as a typical microtunnel project with several short, straight drives, the SARI Mainline offered JWF the perfect opportunity to offer an innovative value engineering proposal to eliminate shafts and combine multiple drives on the project. This saved the Orange County Sanitation District over $1 million and offered a 20% reduction in the tunneling schedule. … Continue reading Santa Ana River Interceptor (SARI) Relocation – SARI Mainline Project

Balch Consolidation Conduit Shafts & Pipelines

The Balch Consolidation Conduit Shafts and Pipelines project (“Balch”) was a key component of the City’s Controlled Sewer Ooverflow program and required installation of 8,000 feet of 84-inch and 54-inch diameter pipes via microtunneling at depths of 20 to 75 feet to carry sewage and stormwater runoff from the Balch Drainage Basin to the West … Continue reading Balch Consolidation Conduit Shafts & Pipelines

Woods Street Project Group

Emergency Woods Street Trunk Sewer Relocation; Woods Street Trunk Sewer Abandonment; and Emergency Woods Street Trunk Sewer Rehabilitation. This group of three emergency contracts negotiated with the City of Portland were to replace severely deteriorated gravity sewer lines that serve the Ross Island Bridge and Naito Parkway interchange and the Lair Hill residential neighborhood of … Continue reading Woods Street Project Group