Rabu, 29 Juni 2011

Cranes over the Willamette River Bridge

From ODOT-

Building the new Willamette River Bridge requires a variety of equipment. The site is crowded with machinery, including wheelbarrows, dump trucks and all sizes of cranes. The most visible are the cranes.








The number of cranes on the site at any given time varies from three to six and on occasion there are even more. They lift material – steel beams, wood of all kinds, rebar and concrete – from the ground or the work bridge to the point needed on the project. The operators often can’t see where the material is to be set down. Instead, they rely on spotters who communicate with them by radio to position the load. A key focus is always safety for those above or below the load.









It’s challenging to position the cranes where they are needed. The river, Franklin Boulevard, Interstate 5 on- and off-ramps, protected wetlands and railroad tracks all run through the project. Moving the cranes to new locations requires careful planning to choose the route with the fewest disruptions to the public.



The use of cranes greatly diminishes the time and cost to complete the Willamette River Bridge and other bridges throughout the state.



The next time you are traveling the Oregon coast, imagine building the Rocky Creek Bridge, which spans a small gorge on Otter Crest, in 1927 or the Cape Creek Bridge, located at Heceta Head Lighthouse Scenic Viewpoint, in 1932 without modern-day cranes.


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