It has `=cycleway` , so I don't find "Footbridge" the best. Both are used. 
https://www.info.gov.hk/gia/general/202302/15/P2023021500292.htm
https://www.legco.gov.hk/yr2023/english/counmtg/agenda/cm20230215.htm
https://www.legco.gov.hk/yr2023/english/counmtg/hansard/cm20230215-translate-e.pdf
https://transitjam.substack.com/p/octopus-bridge-demolition-highlights
https://www.youtube.com/watch?v=FLPU_KKAldQ
https://www.youtube.com/watch?v=jIy80nhnM-o