The San Francisco-Oakland Bay Bridge was completed in 2013, took 12 years to build and cost $6.4 billion. It is the largest and most ambitious public works project in California history, in large part because it is designed to withstand a massive earthquake. Since shortly before its completion, however, the bridge has been plagued with questions about its sturdiness.
Last week Caltrans revealed that 120 of the 400 galvanized steel rods that anchor the bridges tower to its foundation are in leaky sleeves flooded with saltwater. This presents a key vulnerability in the event of a large earthquake.
The use of mobile devices for internet access, such as tablets and cell phones is increasing globally. More and more internet traffic originates from these devices, and in many cases, websites are not yet properly designed to be easily viewed with these devices.
A heating and air-conditioning unit weighing several tons fell 30 stories to the ground last Sunday. The incident occurred in Midtown Manhattan after the unit came untethered from a crane lifting it to the roof of an office tower at 261 Madison Ave. Seven people were injured including 5 passers-by and two construction workers.
A WWII era, one-ton bomb was unearthed in the German city of Cologne during preparations for the construction of a pipeline last week. Roughly 20,000 people were forced to leave their homes so that authorities could defuse the bomb. The unexploded US-made device was found 16 feet underground on the left bank of the Rhine river near Mülheim Bridge.