B – The city raised the street to eliminate a hazard called “the Death Dip.”
C – They’re once-secret tunnels used by the Underground Railroad.
D – They’re subterranean storage areas for bulky commodities during the wholesale era.
A and D
Both have some truth to them, but the main answer is B. The northern ledge of downtown’s river bluff is along the 100 block of S. Gay, and for many years there was a hazardous asphalt gulley between Vine Avenue and the bridge over the Southern Railway yards. The city chose to fix it, at much expense, by building a road that covered the ground floors of several businesses between Vine and Jackson. Our new office happens to be in one of those spaces.