01-31-2016, 02:47 PM
Having done a lot of heavy construction work outdoors myself, working under a dome will allow more work to get done just by avoid stuff getting buried in the snow and machines freezing to the ground. Concrete can be poured in the winter the mix just needs to be adjusted and certain protocols followed. Doing the work under a heated dome probably just allows them to use standard cement mixtures and procedures that might allow them to make up for some lost time. I don't know much about concrete but I've seen it poured in the winter with various means of insulating it and keeping the moisture present.
I also imagine the dome footings will be removed, they have the anchor bolts engineered for the dome on them and modifying that to work with the final bridge might be more time and labour than removing it and pouring new concrete in its place, if there is even concrete at that location.
I also imagine the dome footings will be removed, they have the anchor bolts engineered for the dome on them and modifying that to work with the final bridge might be more time and labour than removing it and pouring new concrete in its place, if there is even concrete at that location.