Hello,
You may already be aware of this so sorry if it's a repeat. National library of Scotland offers access (free!) to historical maps. If you're lucky the old maps have street names, sometimes not.
Follow this link to the map for 1898, sadly no names but the layout is the same as the previous map and neither of the roads you seek are on that one. This is the link https://maps.nls.uk/view/101027289 Warning, you can spend endless hours just browsing where you lived or in my case born, a street in Crofton long since gone.