Tunnel Business Magazine

OCT 2018

TBM: Tunnel Business Magazine is the market leader for North America. TBM is written for leading professionals in all aspects of tunneling and covers project stories, design elements, contracting strategies, legal issues, new technology and more.

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4 P U B L I S H E R / E D I T O R James W. Rush jrush@benjaminmedia.com C O N T R I B U T I N G S TA F F E D I T O R S Sharon M. Bueno Brad Kramer Andrew Farr Mike Kezdi S A L E S + M A R K E T I N G Director of Marketing: Kelly Dadich kdadich@benjaminmedia.com Regional Sales Representative: Todd Miller tmiller@benjaminmedia.com Event Sales Manager: Brittany Cline bcline@benjaminmedia.com P R O D U C T I O N + F U L F I L L M E N T Production Manager: Chris Slogar cslogar@benjaminmedia.com Graphic Designer: Deborah R. McManus dmcmanus@benjaminmedia.com Director of Web and Audience Development: Mark Gorman mgorman@benjaminmedia.com Audience Development/Sustainability Coordinator: Cayla Poteete cpoteete@benjaminmedia.com E D I T O R I A L C O U N C I L Gary Brierley, P.E - Dr. Mole Inc. Randy Essex, P.E. - Mott MacDonald Dr. Levent Ozdemir, P.E. - Ozdemir Engineering Inc. William W. Edgerton - McMillen Jacobs Associates Joe Gildner - Sound Transit Paul Roy - AECOM Jon Hurt - Arup %JKGH'ZGEWVKXG1HƒEGT$GTPCTF2-T\[U bkrzys@benjaminmedia.com President: Robert Krzys robk@benjaminmedia.com Controller: Marianne Saykes msaykes@benjaminmedia.com 10050 Brecksville Rd. Brecksville, OH 44141 USA Ph: 330.467.7588 - Fax: 330.468.2289 www.tunnelingonline.com e-mail: info@benjaminmedia.com Reprint Information: Wright's Media Ph: 877.652.5295 - Fax: 916.983.6762 There has been considerable talk recently about tunneling technology, and how much more it can be improved. doubt, improved technology helps make tunneling faster and cheaper, and even allows tunnels to be built that perhaps would not have been possible in the past. The truth is that tunnel technology has been evolving at a steady pace. Culminating in recent years with record-setting projects and notable firsts that have continued to expand the en- velope of tunneling in the United States. In particular for Sou ada Water Authority's Lake Intak ondout Bypass Tunnel raised the bar for tun- neling under high water pressure, and Washington State DOT's SR 99 Tunnel and Florida DOT's P unnel set stan- dards for large bored highway tunnels. And tha ommunication, real-time mon- itoring and automation complement improvements to materials and processes including tunnel liners, waterproofing systems and additives f erformance in a variety of ground conditions… to name a few. Ultimately, however, technological improvements by them- selves are meaningless without a willingness to accept them. His- torically, there had been a reluctance in the United States to jump on board with new (i.e., untested/unproven) technology. And un- derstandably s e the "guinea pig" or explain to stakeholders why a project went sideways. Tunnel projects are, for the most part, built to serve the public, built with public money (typically) and oftentimes built in proximity to business and residences. But in the past 10 years, we ave seen a willingness to embrace new approaches and innovative technologies, beginning perhaps with adopting new contracting strategies, specifically design- build. Design-build encourages innovation by tapping into the contractor's substantial knowledge, while potentially reducing the cost and duration of a project. Continuing this trend, we are seeing P3s as an alternative to tradition public financing, which could spur even more tunnel work. During that same time period, agencies have shown an increas- ing willingness to take on new approaches such as the previ- ously mentioned record-setting projects – among others. Looking ahead, I see this trend toward embracing technology continuing. In Virginia, VDOT announced that the new Hampton Roads Bridge-Tunnel Expansion project will include a bored tunnel across the harbor – a first for the department. The bored approach reduces impact on the marine environment while reducing im- pacts to commercial and military shipping in the channel. All 10 existing highway tunnels in the Hampton Roads area have been built by immersed tube. In California, the Santa Clara Valley Transportation Authority approved a single bore option for the upcoming BART extension under downtown San Jose. This single-bore approach reduces surface impacts, optimizes station construction and eliminates the need to construct cross passages. Construction of a single- bore subway construction would be a world-class project and a With demand for tunnels forecast to increase across all sec- tors (water, sewer, subway, high-speed rail, highway), the need for improved methods to increase efficiency and decrease cost will continue. And no doubt the industry will continue to meet the demand. Improving Tunneling Jim Rush E D I T O R / P U B L I S H E R TUNNELINGONLINE.COM TBM: TUNNEL BUSINESS MAGAZINE // OCTOBER 2018 P U B L I S H E R ' S M E S S A G E

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