Importing directly from MS Access Database to WP directory

The short answer is essentially no for the reasons stated. It is conceivable to make use of a common format like CSV. You could upload the exported .csv file to your WP server and develop a custom WP page template that reads the file data and outputs a nicely formatted webpage. It’s not very efficient to do so on every request, so some sort of caching scheme would be a good idea.

Getting that same CSV data to work on a map also would involve custom coding to parse the file data into something the mapping app can understand. Since the template code is PHP based and the mapping app is likely JS based, you’re looking at two different development projects that more or less do the same thing. Ideally, the other locations where changes are made would all work off the same file, which probably means even more custom coding. And you still need to manually export the .csv file and upload anytime there is a change.