recent posts

Tunnel Short Course Draws Capacity Crowd to Colorado Schoo...

The seventh annual Colorado School of Mines Tunnel Short Course – titled “Breakthroughs in Tunneling” – was held Sept. 15-17 in Golden, Colorado. The course attracts professionals from all over the country – and the globe – to hear presentations by...

Low Bidder Announced for Dugway Storage Tunnel

A joint venture of Salini Impregilo/Healy was the low bidder for the Northeast Ohio Regional Sewer District (NEORSD) Dugway Storage Tunnel (DST) project. The JV entered a bid of $153.3 million. Other bids, which were opened Sept. 10, included Southland Mole Johnson...

Hard Rock, Small Tunnel: Virginia Contractor Uses SBU for ...

By Desiree Willis Boring a small tunnel in hard rock is never an easy task, but when the rock is 28,000 psi UCS, the term “hard” doesn’t begin to cut it. That was the obstacle facing Virginia-based trenchless contractor Kruckenberg Service Co. at a set of utility...

SR 99 Update

Seattle Tunnel Partners has now installed all 84 underground piles associated with their plan for accessing and repairing the SR 99 tunneling machine, Washington DOT reported on Sept. 8. In early September, crews installed the final of 11 piles that will support the...

Super Excavators’ Microtunnel Project Wins Award

Super Excavators of Menomenee Falls, Wisconsin, was subcontractor on a project that received the National Award of Merit in the transportation category from the Design-Build Institute of America. The Ohio DOT I-71/I-670 Interchange – Columbus Crossroads was the...
recent from Editor's Message Education and Training in Tunneling
Education and Training in Tunneling One topic that has been much discussed in the construction market in general – and tunneling specifically – has been the need to recruit, train and retain employees in all facets of the industry, including contracting, engineering, and within the ranks of the owner agencies. In our annual roundtable...
recent from People Felice Appointed Chairman of TRB Tunnels Committee
Felice Appointed Chairman of TRB Tunnels Committee ILF Consultants, Bellevue, Wash., announced that Dr. Conrad Felice has been appointed Chairman of the Tunnels and Underground Structures Committee for the Transportation Research Board (TRB). TRB standing committees play a vital role in facilitating the exchange of transportation research information and...
recent from Technical Papers 170 Feet Below Columbus
170 Feet Below Columbus By Lucian P. Spiteri, P.E., Paul C. Schmall, Ph.D., P.E., Mark Gentile, P.E., and Michael A. Nuhfer, P.E. The OSIS Augmentation and Relief Sewer (OARS) project is a 23,300-ft long, 20-ft finished diameter combined storm and sanitary overflow relief sewer mined through dolomite and limestone rock...
recent from Product Showcase Product Showcase – April 2014
Product Showcase – April 2014 Brookville Equipment Expands Portfolio Brookville Equipment Corp. expanded its mining product portfolio in 2013, offering up custom haulage and transportation solutions for mining customers in the U.S. market and abroad, including the production of its largest underground mining locomotive since the company...