With the mapping of the entire N5 from Longford to Westport, as well as the N26, there's just one gap in the N17 to fill in and all primary routes in Mayo are complete.

I've been filling in detail on Westport, Castlebar, Ballina and Swinford, trying to get street names and one-way systems as accurately as I can. I've also been studying the SIs carefully to make sure the N and R roads are accurately mapped through the towns.