Endpoints of
US Route 331[i]

Today's US 331 was not commissioned until 1952.  In the beginning (1926), there was a different US 331; this is how it was described in AASHO's Apr. 1927 route log:

Before US 29 was extended down through this area, that was the north end of US 331.  Here, we are northbound on US 31:

The north beginning of US 331 was to the right, on what is now US 29/AL 113. 

This shot was looking south on US 31/US 29/AL 113; today US 29 and AL 113 go left here.  But historically that was the north beginning of US 331:

The south end of US 331 was at the same intersection where US 29 ends today; more info and photos on the Pensacola page.