About time for this one, now they need to turn the opposite corner under 290 into a park
https://worcesterma.primegov.com/viewer/preview?id=80275&type=2
Its the edge of downtown and there us residential on the other side of the track. While not the most attractive spot, being next to a rail is not strange in a city
That looks terrible, no offense.
And to answer your question... lots... lots more labor, very expensive and..... your rendition doesn't even look good
Also, all bricks are precast, that's what makes them bricks