PaintSquare.com


The First Word in Protective & Marine Coatings

A Product of Technology Publishing / PaintSquare
JPCL | PaintSquare News | Durability + Design | Paint BidTracker

Download the FREE Equipment and Rental Resource Guide

Paint and Coatings Industry News

Main News Page


Engineer Reports Mounting Damage from Big Dig Leaks

Tuesday, July 26, 2011

More items for Program/Project Management

Comment | More

Continuing water leaks into Big Dig tunnels in Boston are causing mounting damage to corroding electrical systems and structural steel, among other components, according to an internal report from the Big Dig’s chief engineer, reported on in the Boston Globe.

Chief engineer Helmut Ernst prepared a seven-page report in April with an extensive description of the damage from the leaks, as well as an estimate of repair costs that might total $150 million. Subsequently, the Globe says, the report was condensed to two pages by the Massachusetts highway administrator, Frank DePaola, and softened to indicate the that tunnels are safe and the repair costs are minimal.

 Thomas ONeill Jr Tunnel

 Massachusetts Department of Transportation

A portion of The Big Dig project under construction.

Ernst’s report was prepared after a 110-pound light fixture crashed from the ceiling of the tunnel, revealing widespread corrosion in the lights throughout the 7.5 mile-tunnel system.

His report described leak repairs and other remedial work that he estimated would cost $150 million.

He reported that 17 million gallons of water leaking into the tunnel system each year are pumped out, much more than anticipated, resulting in Big Dig’s consistent violation of its state permit for the amount of water it is allowed to pump into the Deer Island Sewage Treatment Plant.

Leaks are causing roadway icing inside the tunnels, which are then treated with deicing salts, exacerbating the corrosion problem, he said.

Ernst also reported widespread corrosion of electrical components and conduit, and initiation of corrosion of structural steel, piling, and girders supporting the tunnel roof.

 Big Dig ceiling collapse
Part of the ceiling of the Big Dig collapsed in 2006.

Additionally, he reported problems of mold in utility rooms, saturation of fireproofing materials, and damage to the ventilation system.

He also reported the continuation of crack development inside the tunnel due to excessive temperature variations between summer and winter (100 degrees rather than 50) resulting from a design flaw. Major crack repair work is needed, he said in his report.

The full text of the Globe story is found in “Report Cites Costs, Risks of Big Dig Leaks.”

   

Tagged categories: Concrete; Corrosion; Cracking; Roads/Highways; Waterproofing

Comment Join the Conversation:

Sign in to our community to add your comments.

Barton International
Garnet Abrasives result in Shorter Blast Times

Get your customers back on line fast with Barton engineered garnet abrasives. 2 to 4 times harder and up to 2 times heavier than ordinary abrasives. Call 800-741-7756 or Email info@barton.com


SAFE Systems, Inc.
Custom blast rooms
by SAFE Systems

Don't waste time and money "making do" with a "standard" design. Let us work with you to design and build the
system that best fits
your requirements.
Call 1-800-634-7278


Minerals Research & Recovery

HIGH PERFORMANCE ABRASIVES


“Made in the USA!”

Why recycle waste from other countries? Go FASTER, CLEANER, at 1/3 THE COST with MR&R “All-American” Sharpshot®HP!!

WATCH THE VIDEO


Corrosion Probe, Inc.
From Detection to Correction

Corrosion Probe, Inc. has the Most Concrete Coatings Experience and Expertise. Contact us today at
860-767-4402, www.cpiengineering.com


LS Industries
LS Blasters: Optimum Steel Cleaning Efficiency

Simplify surface prep with the precise shot control of LS Blasters. Our blast technology delivers optimum coverage and finish. 800-533-8008


U.S. Zinc

The proven corrosion protection properties of our zinc dust prolong the life of marine coatings. U.S. Zinc – Helping the world work™


Denso North America Inc.
Denso SeaShield
Marine Systems

A full range of steel, concrete and timber pile rehabilitation systems including petrolatum systems, fiberglass jackets, epoxy grouts and many other product lines.
Call 1-281-821-3355 or Visit densona.com

 
 
 
Technology Publishing

The Technology Publishing Network

The Journal of Protective Coatings & Linings (JPCL) PaintSquare
Durability + Design Paint BidTracker JPCL Europe

 
EXPLORE:      JPCL   |   PaintSquare News   |   Interact   |   Buying Guides   |   Webinars   |   Resources   |   Classifieds
REGISTER AND SUBSCRIBE:      Free PaintSquare Registration   |   Subscribe to JPCL   |   Subscribe to PaintSquare News
MORE:      About PaintSquare.com   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us
 

© Copyright 2000-2014, Technology Publishing / PaintSquare, All rights reserved
2100 Wharton Street, Suite 310, Pittsburgh PA 15203-1951; Tel 1-412-431-8300; Fax 1-412-431-5428; E-mail webmaster@paintsquare.com