tunnelling-journal (1)
tunnelling-journal (1)
  • Home
  • Print
    • Subscribe
    • Tunnelling Journal
    • Breakthrough
    • ITA Activity Report
    • A&NZ Journal
    • WTC Preview
    • Media Kit
  • Digital
    • Newsletter
    • E-Shots
    • TJ Digital edition
    • Products Page
    • Media Kit
  • Conferences
    • BTS Conference and Exhibition
    • Cutting Edge 2022
  • Buyer’s Guide
  • Events Diary
  • Jobs
  • About Us
  • Contact Us
  • Podcast

Home > Final Bi-County breakthrough for RSS JV

Final Bi-County breakthrough for RSS JV

Amanda Foley

Written by Amanda Foley on 01/05/2013 in News

Tagged:

Mining is now complete on the Washington Suburban Sanitary Commission’s (WSSC) 5.3-mile (8.5km) long Bi-County Water Tunnel project, located in the Maryland suburbs immediately north of Washington DC.

Following numerous challenges – including high water inflows at shaft locations, areas of poor rock quality and a major TBM breakdown – the Oscar Renda Contracting, Southland Contracting and SAK joint venture (RSS JV), achieved the final hole through with its 10ft (3m) diameter re-furbished Robbins Main Beam TBM at 2.30pm on Friday, April 26.

The WSSC provides water and wastewater services to 1.8 million customers in the Prince George and Montgomery Counties, in Maryland. Conceived more than 20 years ago, the Bi-County Water Tunnel will increase supplies of clean drinking water to eastern areas of two counties in Maryland and also Washington DC. The increased water supply will alleviate current capacity limitations, and the tunnel will also serve as an additional high-pressure water source during peak-use periods, droughts, and emergencies.

WSSC hired Black & Veatch to design the tunnel and its valve vault structures. In August 2009, the $113 million construction contract was awarded to RSS JV. A joint venture of Jacobs Associates and Louis Berger Water Services is providing construction management. Project completion is currently anticipated in Spring 2014.

For a full report on the project and the challenges encountered during construction, see NATJ’s April/May 2013 digital edition.

Comments:

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Search

Digital Edition

More Like This

04/11/2022

LHDA awards Polihali Transfer Tunnel and Dam contracts

LHDA awards Polihali Transfer Tunnel and Dam contracts

The Lesotho Highlands Development Authority (LHDA) has announced the Polihali Transfer Tunnel and Polihali Dam construction contract awards, the two…

22/11/2022

Robbins Double Shield Launches in Nepal

Robbins Double Shield Launches in Nepal

In October 2022, China Overseas Engineering Group Co. Ltd and China Railway No. 2 Engineering Group Co Ltd launched a…

05/08/2022

Big Tex’s landmark breakthrough after diameter change

Big Tex’s landmark breakthrough after diameter change

On July 25, 2022, ‘Big Tex’ a Robbins Main Beam TBM successfully broke through in Dallas, Texas, USA on the…

  • Contact Us
  • Media Kit
  • Magazine Archive

Newsletter

The latest from the Tunneling Journal direct to your inbox.

Social



Enquiries

TGS Media Ltd
The Old Library
Webster House
Dudley Road
Tunbridge Wells
TN1 1LE
United Kingdom

© Tunnelling Journal. All Rights Reserved. Privacy Policy / Terms & Conditions. Admin

We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it.OkRead more