Use OTP Geo-coder to find a locationSource:
Geo-coding converts a named place, such as a street name into a lng/lat pair.
otp_geocode( otpcon = NULL, query = NULL, autocomplete = FALSE, stops = TRUE, clusters = FALSE, corners = TRUE, type = "SF" )
OTP connection object produced by otp_connect()
Character, The query string we want to geocode
logical Whether we should use the query string to do a prefix match, default FALSE
Logical, Search for stops, either by name or stop code, default TRUE
Logical, Search for clusters by their name, default FALSE
Logical, Search for street corners using at least one of the street names, default TRUE
Character, How should results be returned can be "SF" or "Coordinates" or "Both", Default "SF"