1) complete rescue/recovery 2) complete investigation. 3) get demolition crews in there and open shipping lanes through the wreckage. 4) re-evaluate and adjust use of tunnels. 5) get barges/ferries in place for land based freight transport to cross. 6) bulld a new damn bridge.
I prefer peace. But if trouble must come, let it come in my time, so that my children may live in peace. ~~ Thomas Paine