It's opening day for the Silvertown Tunnel, the highly controversial road project that provides a new way to cross the Thames in East London. The plan is to ease the chronic congestion in the Blackwall Tunnels - but campaigners hate the idea of a new road encouraging more people to drive across the river. Even usually pro-road voices have voiced complaints because it comes with a new toll that applies to the old tunnel too.
We're putting controversy aside to explore the UK's newest major road project, a £1bn twin-bore road tunnel. Come and join us to experience life beneath the waves.
Our blog post about Silvertown and other East London river crossings: The Trouble with the Thames