December 29th – Three and a half suspension bridges in one day, cycled two and a half of them. Not sure you can do that many places except the Severn Estuary.
Why the half? Well, the original Severn Bridge is two bridges, really – a huge, remarkably elegant structure over the Severn, and a second immediately to the west over the Wye to Chepstow. To me they are separate structures, as they have markedly different designs, but the Wye bridge doesn’t feel quite eligible.
It’s also a historical tour of bridge evolution – from the early Victorian, beautiful Clifton, so extravagant construction halted because Brunel ran out of money, to the beautifully minimal Second Crossing, one can see shifts in technology and materials, even between the latter two.
I rode the Clifton, The Severn and Wye – and I’m not mad keen on heights. The wind crossing the Severn was astoundingly strong, but the experience was unforgettable. Such wonderful views, great technology and the wonder of genius used to create, not destroy.
My particular favourite were the hundreds of Stockbridge Dampers fitted to the supporting ropes on the Seven Bridge. These are an anti-resonance device and stop the cables humming. They are a wonderful real-world example of harmonic mathematics in action, and it is are also fascinating to see how they’re carefully tuned.
An unforgettable day. More on the main blog later.