I've been for a VERY odd walk – along the railway tracks to Charing Cross. On viaducts and bridges from Southwark through Waterloo East, and over the Thames. No passenger trains to dodge though: as regulars know, this line has been shut since 26th July. A 22-day summer hols closure has enabled hundreds of maintenance tasks in one efficient swoop - and @networkrail let me go see progress. There'll be a video out soon, but you might like these snaps of the worksites. Circa 1.8km of new track, 30+ new switches & crossings, replacement platform extensions at CHX, spraywashed footbridge, new windows, refurbed loos, general tidy-up and more (there’s always more). It might look simple, but this is a hugely complex project, with 30+ very large pieces of track (essentially sets of points, forming junctions) to bring in and install with millimetre precision. The route is laid on ancient brick-built viaducts, built on marshland… so weight restrictions limit what equipment can be used! Tamping machines are done on the track now, and the project is entering last stage - ready to reopen for Monday morning. Thanks @NetworkRailSE and @Se_Railway for the access and guided tour.