Redundant Bridge

The sign says that the bridge is no longer in use and no railway traffic passes over it. Wouldn't it be great to get up there? 

On my way to Nick's bike shop in Kentish Town. Left my bike for a service and came back on the train. Forgot that I had left my keys and helmet in my bike bag. Fortunately when I got home I found a spare set of keys. Will have to wait till I pick the bike up next week.