San Antonio Bridge (Tollai Åcho)
We have very few left on the island, but the bridges of Guam built during Spanish times were made for their times, meaning, they were very narrow.
Traffic was light to begin with and the only vehicles were bull (or karabao) carts. A few elite people, like military officers, might ride a horse.
So when motor cars made their appearance on Guam in the early 1900s, there was trouble when two cars going opposite directions wanted to use the same narrow bridge at the same time.
A rule was agreed on : cars heading towards the center of Hagåtña had the right of way.
Cars leaving the center of Hagåtña had to move to the side and give way to the other one.
Man's laws are never perfect. The question remains : When inside Hagåtña, and two cars want to use the same bridge, like the one above, who goes first?