Structural News

Researchers examining which bridge designs and materials are the most eco-friendly

Coral Gables, Fla. — When envisioning a new structure, engineers often have to balance design choices against the environmental impact of materials used. It is estimated that 40 percent to 50 percent of greenhouse gases are produced by the construction industry, according to the California Integrated Waste Management Board. Lessening the impact of construction on the environment is a work in progress.

Repairs to I-495 Bridge continue to advance

Wilmington, Del. — Construction of the 32 new underground support columns needed to repair the I-495 bridge were completed today and work to erect the jacking towers that will be used to lift the bridge deck back into alignment is ongoing.

Video: 70-foot-long concrete bridge survives simulated earthquakes

Reno, Nev. — A 70-foot-long, 52-ton concrete bridge survived a series of 10 earthquakes in the first multiple-shake-table experiment in the University of Nevada, Reno’s new Earthquake Engineering Lab, the newest addition to the world-renowned earthquake/seismic engineering facility.

Video: I-90 Innerbelt Bridge demolition

Cleveland — The I-90 Innerbelt Bridge opened to traffic on August 15, 1959, and on July 12, 2014, the Ohio Department of Transportation (ODOT), Trumbull-Great Lakes-Ruhlin (TGR) and thousands of Clevelanders said their final good-byes to the bridge as it disappeared into the Cuyahoga River Valley. Controlled explosive demolition of the steel skeleton of the 1959 Innerbelt Bridge took place shortly after 6 a.m., dropping five of the nine steel spans of the old bridge.

Technical advisor Arup celebrates dedication of tallest U.S. flagpole

Seattle — Multidisciplinary engineering and consulting firm Arup served as technical advisor for a 400-foot-tall, free-standing flagpole owned by ACUITY Insurance Company in Sheboygan, Wis. The pole, which is currently the largest in the United States, was dedicated in June amid comments from Wisconsin Governor Scott Walker, and appearances by skydivers and military dignitaries. Twenty-five ACUITY employees, who are military veterans, carried the 350-pound, 60-foot by 120-foot American flag that was lifted onto the pole during the ceremony.

Pasadena Heritage celebrates 101-year-old Colorado Street Bridge

Los Angeles — The bridge engineering firm of Waddell & Harrington – a forerunner to HNTB Corporation, which this year celebrates its 100th anniversary – designed the Colorado Street Bridge dedicated in 1913. This 101-year old landmark is being celebrated by Pasadena Heritage on July 12, 2014 with its signature Colorado Street Bridge party which draws local officials, business leaders, sponsor partners and thousands of residents for a festive evening on the bridge.

Repairs to I-495 bridge advance to next critical phase

Wilmington, Del. — The work to construct new underground foundations for the damaged portion of the I-495 bridge is nearing completion and construction of the jacking towers that will be used to temporarily repair the I-495 bridge has begun. Building the jacking towers at this point in the project means the work is now advancing ahead of schedule, and if all continues to go smoothly, could allow I-495 southbound to open several weeks prior to the Labor Day holiday weekend.

USGBC launches real-time international market briefs

Washington, D.C. — The U.S. Green Building Council (USGBC) announced the launch of an expanded online data visualization resource that will allow any user to access aggregated LEED green building project information in the more than 150 countries with LEED projects under way.

AWC statement on bill promoting product neutral efficiency codes

Washington, D.C. — American Wood Council (AWC) President and CEO Robert Glowinski issued the following statement regarding introduction of the Energy Savings and Building Efficiency Act (H.R. 5027) in the U.S. House of Representatives by Reps. Marsha Blackburn (TN) and Kurt Schrader (OR). Among other things, the bill directs the Department of Energy to act only as a technical advisor in the development of energy codes and would prohibit the agency from advocating for any particular energy code, provision or energy savings target.

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