| Relationships | Role | Relationship Start | Relationship End |
| United - Interstate Center Partnership | Parent | 6/30/2007 | 12/31/2015 |
| United - Interstate Center Partnership | Parent | 3/26/1996 | 6/29/2007 |
| United - Interstate Center Partnership | Parent | 4/29/1994 | 3/25/1996 |
| United - Interstate Center Partnership | Parent | 4/29/1994 | 3/25/1996 |
| United - Interstate Center Partnership | Parent | 8/13/1985 | 4/28/1994 |