Speaking at this month’s Transport for London board meeting, the Mayor said he wanted to “move ahead with a programme to do them all in time” but noted it “won’t be easy and it won’t necessarily be cheap”.
He told board members work would initially be focused on new stations where accessibility can be built-in as part of the design.
TfL would then explore ways to increase accessibility at existing and shared stations.
He added: “We’re going to set out a programme and we will [initially] do the ones where footfall is greatest”.
Transport Commissioner Sir Peter Hendy stressd that all Crossrail stations would be fully staffed, ensuring assistance would be available to all passengers needing it.
When fully operational in 2018, Crossrail will connect 37 stations linking Maidenhead and Heathrow in the west, to Shenfield and Abbey Wood in the east.
TfL say the service will increase rail based transport in the capital by 10 per cent and “set the benchmark for passenger experience for European metro services.”