Noah Kazis explains that with a lack of urban big box models to pull from, the developer estimated the parking needs using suburban models:
"The results, needless to say, weren't a good fit for Manhattan shoppers. Over half of East River Plaza's customers live in the three closest ZIP codes, and by and large, they get to the mall on foot. Just under half of all shoppers Gebhart surveyed as they entered the Target on the Tuesday afternoon had walked there. Only 27 percent had driven."
The design of the mall also suffers from inappropriate auto-orientation, says Kazis:
"Because the designers of East River Plaza had assumed most shoppers would be entering from the garage, not the street, the pedestrian environment is terrible for those entering on foot."
Thanks to Noah Kazis