Wait so all this lets them pave a 100 meters a week (assemble bridge on one weekend, pave on Monday, then disassemble the bridge the next weekend after the asphalt has dried)? That seems horribly slow and expensive.
Keep in mind, though, you don't lose a lane of traffic. There is no need to truck in jersey barriers. You don't have to build an entire temporary detour road. You don't pay a consultant $200/hr to design a traffic control plan.
I think the real value is safety. The crew is shielded by the bridge and you have complete grade separation from traffic. That's a lot better than an orange barrel being the only thing between you and a minivan.
NASA demonstrates otherwise.
It’s like Windows with its half-hearted efforts to modernise it’s interface.
The video clearly shows barriers between the workers and the active surface lane.
But this bridge is engineered with solid feet for taking traffic loads. The wheels are only extended for movement and wouldn't be able to take the load of traffic.
That’s because it is. Welcome to the world (in the case of USA, the entire country) car centric transportation.