...Not brand new ones. Clear the debris off enough to get a vehicle through.
Right... they can start "clearing" now... they should reach some of those villages and towns by next May... long after all the residents are dead.
No... what's needed now is a massive airlift... send a lot more heavy-lifter -type helicopters down there... yesterday.
Then... once the immediate crisis has past... set them to work, clearing and repairing existing roads, to reestablish communications...
Once they have some breathing space, set them to rebuilding and improving their roads, to withstand such stress and strain in the future.