I've only biked once on each of those bridges with someone else. And I have yet to familiarize with roads to and from Richmond on my own by bike beyond the airport.
If Grog hasn't done those bridges many times, I would be surprised. Her in-laws live in Richmond.
And I go to the historic Chinatown (just a 15 min. bike ride away), not Richmond Chinatown to shop. But Canada Line bike deck will change that abit later probably.
What joy, Richmond. (better than Langley in terms of commuting)..hope you figure out an efficient safe route for a commute.