quote:
Originally posted by Delivering Happiness
. . . Those barges need to be moved under the bridge or at list very close to the bridge!
As someone who has spent a lifetime doing this type of work, there are many factors that go into the placement of barges while performing bridge work. Everyone has an opinion and everyone has regulations that must be met. It is often times very hard to find a location that falls within everyone's criteria. Especially on a structure the size of the Tappan Zee which will require that these barges are relocated numerous times.
Some of the agencies that have control over this project include;
* US Coast Guard and their concerns over keeping the marine traveling public safe as well as any impact on the shipping channels.
* USDOT which funds a large portion of the project, and therefore brings along all of their regulations.
* NY State Thruway Authority who is the Owner of the structure.
* US Homeland Security which has authority under the Patriot Act.
* DEHEC which has control under the environmental impact study. They can seriously impact the placement by dictating how close the barges are placed due to the results of environmental monitoring. This is a constantly changing condition based upon wind directions and where "dirty air" will fall during the preparation of connection points.
Add to this the contractors own requirements as far as crane placement for lifting structural pieces into place, and compressor placement for the use of air-driven tools. And you can begin to see that the barges are not just placed on the assumption of a "practical spot".
Understanding that public safety is the number one priority; (Until a worker becomes injured and then OSHA will determine that worker safety is the number one priority.); doing a project of this size and scope is nowhere near as simple as it may appear to the traveling motorist.
The important thing is that the barges are properly lit at all times and that all movement is well spelled out within the appropriate notice to mariners.