Over the old to get to the new.

Last day of my hols today so decided to cycle to my new work to see how long, the best way etc.
On the way there I passed over various bridges, one brand new one and this old cobbled stone one.
Always one to see the irony I wondered how long the new building will be there for, when you consider how long this bridge has stood I reckon my bets are on the cobbles.