Heavonbound: Maybe so when the game rolles in, and it's stormy, The players can see the outline of the goalpost. Just a thought.
yellow
Most football goal posts are made of some type of metal. Football goal posts for the NFL are made out of steel with a mixture of aluminum. Soccer goal posts are usually aluminum or plastic with a net in between the posts.
On the goal line
I think they're called field goal posts
18.6 feet
90 degree angle
The goal posts in the NFL and college are 18 feet, 6 inches apart. In high school, goal posts are 23 feet, 6 inches apart.
The goal post dimensions in Canadian football are the same as in American football. The goal posts are on the goal line. The hash marks are not in line with the uprights.
CFL goal posts are 18.5 feet (5.64 meters) wide. This width is consistent with the rules set by the Canadian Football League, differentiating them from NFL goal posts, which are narrower at 18.3 feet (5.57 meters). The wider goal posts in the CFL are designed to accommodate the unique style of play in Canadian football.
Soccer goal posts are 8 yards apart. Someone else care to document distance between American football posts?
PURPLE
Goal posts, commonly referred to as "uprights."