The goal posts @ Collegiate and Professional levels are 18'6" (eighteen feet & six inches) apart, supended by a crossbar which is 10' (ten feet) off the ground. The uprights (the two posts)...
No, they are the same. They used to be wider (23 feet 4 inches, same as high school), but in 1991 they narrowed them to 18 feet 6 inches, same as the NFL.