I am looking for a way to find latitude and longitude values of both ends of any given road. So for example if there was a site or tool that did this, I would just have to provide a road name (and maybe post/zip code) and it would give me the latitude and longitude values.
There really is no other way to approach this than using GIS software. What you are describing is the guts of what GIS is. Unless you are lucky enough to discover that someone else has done this exact thing at the same place you are requiring, this is something that has to be built from scratch.
Manually, using Google Maps you can right click "What's Here" on any location (start/end points of given road) and it will give you decimal degree lat/long values.
If you have access to GIS software and datasets there are faster ways to get multiple values for multiple streets