SUNDAY BRIDGES--rainbow colors?

Three bridges, three colors, and a yellow bus.  At first I thought of a rainbow, but then I googled "flags: blue, green, red horizontal stripes" and came up with Gambia's flag.  Somewhere I'm sure there's a flag with these stripes and a yellow-something on it, but I was too lazy to look.

See other bridges on Louis La Vache's SUNDAY BRIDGES.

Too lazy today for the daily haiku....  :)