Rail Lines-Union Pacific RR-Peninsular Force Main Project

Bureau of Environmental Services, City of Portland Oregon
Parson's Brinckerhoff Quade & Douglas in association with CH2M Hill
General Contractor
Impregilo/S A Healy JV
Jacking Sub Contractor
Pipe Size

1300′ 108″ OD x 1.000 wall in 10′ sections

The Problem

The project required microtunneling 1300′ under an active railroad without service interruption.

The Solution

Installed 1300′ 108″ OD x 1.000 wall 10’s from a single shaft under Union Pacific’s main rail yard without interruption of rail services.  Two drives microtunneled using Herrenknecht mixshield MTBM AVN 1800D 650′ each took approximately one week each.  “Project of the Year” 2005 Trenchless Technology Magazine.

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