Pack Bridge is a bridge in the Scottish town of Alyth, Perth and Kinross. Intended to carry packhorses loaded with panniers across Alyth Burn,^[1] it is one of the oldest masonry bridges^[2] in Scotland and is shown on maps as far back as 1600, but is believed to date to the early 16th century.^[3] The bridge was rebuilt in 1674 and increased in height with its wide parapets in the 19th century, but retained its original 5 foot (1.5 m) width. Today, the bridge carries pedestrian traffic between Pitnacree Street and Chapel Street.