Celebrating 59 Years AGE CORPORATION CONTRACTORS. 704 US-14 Fort Pierre, SD 57532 605-223-2732 Hours: M-F: 7AM - 5:30PM S-S: Closed Celebrating 59 Years AGE CORPORATION CONTRACTORS . 704 US - 14 Fort Pierre , SD 57532 605-223-2732 Hours : M - F : 7AM - 5:30 PM S - S : Closed