I want to thank Reuben for posting Utilizing the Space Beneath Bridges
Since I cannot put images in comments, I will post these as further examples, from Borough Market, London, Brixton, and the Darling Harbour, Sydney, respectively. The first three pictures are under railway bridges, the last a freeway bridge.
Borough Market – London
Borough Market, London
Brixton, London – Shops in the Viaduct
Carousel in Sydney, Australia