someone posted a question about when the lines over dunnikier rd. went from 4 to 2 (or more accurately 2+2 to 2+0) after the harbour branch closed (possibly on the harbour branch thread!)
noticed a while back that the bridge over dunnikier rd. has old and new styles of bridge, depending on what side you view it from
going down the road towards the traffic lights, modern concrete bridge deck under the ECML: http://goo.gl/maps/HUyUB (notice the state of the chevroned bit - usually skelped about once a year when a stagecoach double-decker tries to go somewhere he shouldn't even be near!)
going up from the traffic lights, older metalwork version is still in place: http://goo.gl/maps/ScMoq
i suppose there's no point renewing it if it's not used anymore
looking underneath gives some good detail: http://goo.gl/maps/W0P4g (it is straight, just the joining of the photos makes it look kinked)
not too clear, but an interesting detail for modellers?: http://goo.gl/maps/2NR7E
and finally, i don't know how common this sort of reinforcement was?: http://goo.gl/maps/eu0uM
interesting that it was required on one side only