https://dailyhive.com/vancouver/old-pattullo-bridge-arch-deconstruction-process-october-2026
Over a century ago, there was no concept of having bus lanes across a Fraser River bridge between NW and Surrey.
Even with the new bridge, 2 bus lanes are still lacking. That's despite the Skytrain not being a 24hr system. So, busses have to be funneled into only 2 lanes each way. Its been that way since the late 1930s.
"A couple of Pacific Stage Lines buses can be seen at the BCER bus terminal." https://archives.newwestcity.ca/Results.aspx?AC=NEXT_RECORD&XC=/Results.aspx&BU=http%3A%2F%2Farchives.newwestcity.ca%2Fsearch.aspx&GI=&TN=internet&SN=AUTO80&SE=555&RN=8&MR=100&TR=0&TX=1000&ES=0&XP=&RF=WebStartDate&EF=&DF=WebFull&RL=0&EL=0&DL=0&NP=255&ID=&MF=GENERICENGWPMSG.INI&DT=&ST=0&IR=4702&NR=0&NB=0&SV=0&SS=0&BG=&FG=&QS=
https://www.surreyhistory.ca/pacificstage.html
https://en.wikipedia.org/wiki/Port_Mann_Bridge
https://en.wikipedia.org/wiki/Port_Mann_Bridge#Original_bridge