If you think that the name shall be only “al-Ameen Street” not with the full name of the subject person, no problem. We already have a similar case like “al-Rashid Street”.     
Now about the using the street number as a name and move the street name to alt_name I’m strongly against that as 77 is the number of the street and if people referred to the street as 77 that doesn’t mean it’s name, just it’s number. And since the street name is over 50 years old and still not changed it’s necessary for it to be in name, and the street number can be in the ref tag.         
Regards.      