The quick re-opening is a hack, but it's a "pattern" that is well known and practiced in roadway construction. The middle 1/3 of the span is passing traffic on

The quick re-opening is a hack, but it's a "pattern" that is well known and practiced in roadway construction. The middle 1/3 of the span is passing traffic on an improvised roadway while the bridge is "properly rebuilt" from the outside in. When the outer 2/3 are done then traffic will be pushed to those portions while the hack is removed and then rebuilt properly. THAT whole process is supposed to take 18 to 24 months from what I've seen elsewhere. A good video about this by a guy who is really into roads and road engineering: https://www.youtube.com/watch?v=LJ249N1aW_8 https://www.youtube.com/watch?v=LJ249N1aW_8