Follow us on Twitter Follow us on LinkedIn Like us on Facebook Follow us on Instagram Visit the TPC Store
Search the site




Coatings Industry News

Main News Page

Delaware Bridge Gets $35M Dehumidifier

Wednesday, December 6, 2017

More items for Program/Project Management
More items from North America

Comment | More

To help offset any future damage caused by humidity, operators of the twin-span Delaware Memorial Bridge have installed a $35 million dehumidification system. The technology was designed to both protect the bridge and prevent cable failure.

“This is an investment in the future and something that will lengthen the life span of this bridge,” said Delaware River and Bay Authority Executive Director Thomas Cook. “It’s a small investment which will pay dividends for years.”

Dehumidification System

Delaware River and Bay Authority Project Engineer Shekhar Scindia told the Courier-Post the goal of the dehumidification system “is to extend the lives of the main cables that form the suspension bridge and carry the load from the suspended spans.” The main cables themselves are the most critical components of the suspension span.

Crispy1995, public domain, via Wikimedia Commons

To help offset any future damage caused by humidity, operators of the twin Delaware Memorial Bridge spans have installed a $35 million dehumidification system. The technology was designed to both protect the bridge and prevent cable failure.

The cable preservation system on the Delaware-bound span began operation Nov. 21; American Bridge Company, the winner of the contract for the project, is expected to complete the installation on the New Jersey-bound span in the spring of 2018.

Limiting Corrosion

The project includes the installation of airtight wraps on the two, 4,100-foot-long cables on each of the two bridges, noted the Courier Post. The dehumidification plants were installed in the bridges’ anchorages, with air injection and exhaust ports located along the cables.

The cables, composed of 8,000 single strands of steel, have dry air forced through them by the system, which pushes out the moist air as a result.

Dehumidifier launch
Delaware River and Bay Authority

The dehumidification system on the Delaware-bound span of the bridge began operation Nov. 21.

According to Scindia, once the humidity level drops to 30 percent, corrosion rates plummet to almost nothing.

The dehumidification system, funded with bridge tolls, is equipped with remote sensors and advanced monitoring systems to ensure proper functionality.

A single new span like one of the twin bridges would cost $800 million to $1.2 billion to replace.

The bridge is the second in the United States with such a dehumidification system, according to DRBA; the William Preston Lane Jr. Memorial Bridge, in Maryland, had a system installed in 2012. The Akashi Kaikyo Bridge, in Kobe, Japan, was the first in the world to be equipped with a dehumidifier.


Tagged categories: Bridges; Corrosion protection; Government; Infrastructure; Project Management

Comment Join the Conversation:

Sign in to our community to add your comments.

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

SABRE Autonomous Solutions
The ALPHA1 provides reliable results consistently allowing you to cost your next job with confidence.

Industrial Vacuum Equipment Corp.
Hurricane Vacuums
& Dust Collectors
Vacuum and dust collector hose, filters and related accessories.

Tarps manufacturing, Inc.
QUALITY MADE IN AMERICA —Available near you!
CLICK to get a behind-the-scenes look at how Tarps Manufacturing makes the highest-quality tarps right here in the USA — available nationwide.

HoldTight Solutions Inc.
Our HoldTight®102 salt remover & flash rust
preventer prevents flash
rust by removing surface contaminants. Contact us
for your nearest distributor.
(800) 319.8802

KTA-Tator, Inc. - Corporate Office
• Coating failure analysis
• Independent testing
• Accelerated weathering testing
• Abrasives Testing
• Oil & Gas Material Qualification
• A2LA Certificate #2455.01
Contact: Rob Leggat
at 412-788-1300 x176

US Minerals
Hit Harder. Clean Faster.
Black Diamond abrasive products are the toughest, most effective blasting media and supply the superior power you need to get any job done.

Graco Inc.
Graco EcoQuip 2: Experience the Difference
While others claim their equipment is the same, none of them compare to Graco’s EcoQuip 2™ Vapor Abrasive® blasting line. Visit to learn more.

Blastox/The TDJ Group, Inc.
Blastox® - One Step Lead Abatement
Sandblast additive delivered to jobsite pre-blended to eliminate hazardous abrasive wastes. Why mix, meter or apply at the job-site? Blast with ease and
Let your painters paint!

ARC / A.W. Chesterton Company
Superior Impact & Wear Resistant Lining
100% solids, impact resistant, ceramic reinforced, epoxy/urethane hybrid lining for severe abrasive wear and impact resistance.


Technology Publishing Co., 1501 Reedsdale Street, Suite 2008, Pittsburgh, PA 15233

TEL 1-412-431-8300  • FAX  1-412-431-5428  •  EMAIL

The Technology Publishing Network

Durability + Design PaintSquare the Journal of Protective Coatings & Linings Paint BidTracker

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   |   Privacy policy   |   Terms & conditions   |   Site Map   |   Search   |   Contact Us