Since 2009 a band of Central London has been a maze of blue hoardings while a new railway is built beneath our feet. And because it is all out of sight, it's easy to forget just how much has already been finished. The tunnels are now complete and are being fitted out ready for trains - and the stations too are starting to look something like we should expect them to look when they open to the public in 2019.
Earlier today Crossrail released its latest update video showing progress on what will, annoyingly, become known as the Elizabeth Line when it opens. It shows how engineers have got as far as installing the curved glass-fibre concrete panels that will be used on all of the new sets of platforms at the deep-level stations.
In the video you can clearly see where the Jubilee line-style platform doors will go - and that the enormous construction site in Farringdon is starting to resemble something like a railway station.
We're looking forward to squeezing on to that platform at rush hour already.