Given my newfound interest in the old Broad Street viaduct, I was
planning on making my way over to the site to see what condition it is
currently in. Has it been fully sealed off and prepped for
refurbishment and construction, or is it still accessible without
trespass?

Also, have TfL and Network Rail worked out how they are going to
conduct the construction of the railway line? The area that the viaduct
runs through is mostly residental, and the predictable noise that will
result from bringing in materials and installing them will undoubtedly
require various forms of mitigation. How will most of the building
materials be brought on site anyway?