3.1 miles of bridge does not equal 3.1 miles of on grade highway. In fact, it’s not even close. In order to build the new New York Bridge, which is replacing the existing Tappan Zee bridge that crosses the Hudson River, 14 miles of main span cables, 50 miles of foundation pilings, 300 thousand cubic yards of concrete, and 220 million pounds of steel are needed to complete the structure. Oh, it’s also going to take another 2 years to build, on top of the 3 they’ve already been working on it.
The existing Tappan Zee Bridge was built in 1955 and handles around 138,000 vehicles per day. After realizing that, it’s even more amazing that no cars were hit when a crane, which was working on the new bridge adjacent to the existing, collapsed onto the existing bridge back in July. Without the added danger of nearby construction, the Tappan Zee was already a hazard by itself. According to the New NY Bridge’s website, that stretch of road was the scene of an average of twice as many accidents as the rest of the NY Thruway system, which is a collection of highways. It has narrow lanes and no emergency shoulders, which can be a recipe for disaster.
The new bridge will contain 8 wider lanes for safer and quicker traffic, not including the emergency lanes, and has also been designed to handle a future commuter rail. Pedestrians and bicyclists will also have their own lane to cross the river safely. In total, the bridge will cost almost $4 billion dollars (3.98 to be exact) and will finish sometime in 2018. We’re sure the NY drivers can’t wait until it’s complete.
Many companies were involved in the design and construction of this bridge, which together are known as the Tappan Zee Constructors, LLC. Companies in the group include Flour, American Bridge, Granite, Taylor Bros, HDR, Buckland & Taylor, URS, and GZA.
The video below was shared by the New NY Bridge on Youtube:
Solar roofs are an obviously popular choice for those interested in conserving energy, but traditional panels are extremely clunky and expensive. Tesla and CEO Elon Musk announced last year that they have solved that issue, which the impending release of Tesla Solar Roof, which look like a traditional roof shingle.
3D printing has had to overcome plenty of obstacles, including materials, mobility, weather, and height. Slowly, but surely, technology companies are beginning to overcome these challenges. A 400 square foot house was recently printed in concrete on-site, in less than 24 hours and in freezing temperatures. Other companies are working on perfecting 3D printed steel for pedestrian bridges. Height limitations seem to be the hardest problem to solve, however.
Remote sites have extreme challenges, like finding enough staff to work the jobs and being able to get materials to the site. Large mining operations have turned to self-driving dump trucks, like this 320 Ton mega machine, for a few years now. But, Lockheed Martin, a giant in the world of global security and aerospace, has a different solution for remote sites.
As of early March, there were nearly 200 construction companies that marked themselves as “interested” in constructing the US/Mexico border wall. The Daily Mail now reports that over 600 have expressed interest in the design and construction of the wall. The Request for Proposal (RFP) package for the conceptual design of the wall was released on March 17th and the responses are due no later than March 29th.
The Consumer Product Safety Commission has announced a recall of a Craftsman portable table saw, sold exclusively by Sears Holdings from April 2014 to October 2016 for around $200. The specific saw was manufactured in China by Rexon Industrial Corp, Ltd. of Taiwan.
Early this year, a landslide caused catastrophic failure to the Pfeiffer Canyon Bridge along California’s famous Highway 1. California Transit officials closed the bridge on February 21st and announced it would be demolished and replaced. Time is of the essence as US News reports that over 400 residents are stranded on one side of the bridge and helicopters have had to bring in food for them. The residents are still able to use the footpaths in the area to cross the canyon.
Scissor lifts are on most typical construction job sites and they’re an often overlooked hazard. Too often, liberties are taken with the lifts that create unsafe conditions, which can cause injuries and deaths. OSHA recently released the results of their investigation of 10 fatalities and 20 injuries involving scissor lifts and released their findings in what the organization refers to as a “Hazard Alert.”
3D printing technology faces major issues when it is required to leave the shelter of a warehouse and step foot on a construction job site. 3D printers are extremely large, heavy, and rely on precise calibration for accuracy. Even the first 3D printed office building in Dubai, which was completed last year, had to actually have its components printed off site and assembled on site. But, Apis Cor, a 3D printing company, believes it has created the technology to print a full structure completely on site.
Road construction is rarely an ideal place for many things. It’s unsafe for workers, it causes traffic issues, and nearby businesses can suffer from it. One more thing can be added to the list, as self-driving cars are also having a hard time navigating construction zones, as well.
Atlanta, GA has been busy recently updated their major sports facilities. The new Atlanta Falcon’s new $1.4 Billion football stadium just recently celebrated a milestone as contractors installed the final roof beam. That stadium is scheduled to open before the start of the 2017 NFL season. Before that, however, the Atlanta Braves’ new baseball stadium will officially open in time to kick off the MLB season, which starts on April 2nd.