You see, in this world there's two kinds of people, my friend: Those with loaded guns and those who dig. You dig.

There are 2 kinds of spurs my friend. Those that come in by the door and those that come in by the window.

In forty years I've tried to watch it well over a dozen times,
But I am only good for about 30 minutes.

Maybe it's my a.d.d. ,
I don't know,
Begining, middle , last quarter, it doesn't matter where I start.

30 minutes and I am out.

When you have to shoot, shoot, Don't talk.

It’s not my favorite of the Eastwood spaghetti Westerns either, although I have seen it at least 3 times; it IS overly long. My favorite is probably For a Few Dollars More.

I won't argue that it's not too long. I usually fast forward a good bit at the part where they need to blow up the bridge.

One of my all time favorite movies, and no, it is not too long.

When Tuco stops the runaway Confederate ambulance coach in the desert,
the horses aen't even sweating.

Bridge History

Link

Why The Good, The Bad And The Ugly's Bridge Explosion Had To Be Shot Twice

If it wasn't enough that Eastwood demanded a $250,000 salary and 10% of the U.S. profits for the film — close to a quarter of the movie's entire budget of $1.2 million (and that's in 1966 dollars) — costs were piled on when the bridge explosion didn't go as planned on the first try and they had to reshoot it. The plan was for one of the Spanish army crew members manning the explosive device to detonate after hearing the word "Vaya," a Spanish expression meaning "go" or "to go."

Leone watched the clouds to make sure he had the right lighting for the shot before yelling the word. However, another crew member yelled it first. Conflicting reports of the account say it was either a crew member signaling actors to get in their proper places or a signaling a cameraman to be ready. Either way, the person tasked with detonating the bomb interpreted the wrong signal and the bridge exploded before any of the filming had started.

Use of practical effects meant that the team had to rebuild the bridge from scratch and shoot the entire scene over again, nearly doubling the cost of production. The bridge ended up being rebuilt by Spanish army sappers (combat engineers) in between shooting other scenes. The mishap unnecessarily added time, labor, and cost that could have been avoided, but it nevertheless resulted in a spectacular and memorable sequence in one of cinema's most iconic westerns.