The crossing with the Armadale/Thornlie railway line (just north of Wellington Street) was a site of regular accidents before it was closed.

[1] In the 1840s, before the northern part of Perth Water was filled in to become what is now the Supreme Court Gardens, Pier Street extended south past St Georges Terrace as far as the Swan River.

The intersection with Hay Street was where the Swan River Mechanics' Institute series of buildings were located on the south west corner.

[4] Pier Street defines the eastern border of the city block known as Cathedral Square.

The Deanery is located on the corner of Pier Street and St Georges Terrace.