A semi-trailer driver was driving along on a country road.

A sign came up that read ' Low Bridge Ahead.'

Before he realised it, the bridge was directly ahead and he got stuck under it.

Cars are backed up for miles.

Finally, a police car came up.

The policeman got out of his car and walked to the lorry's cab

And said to the driver,

'Got stuck, eh?'

The lorry driver said, 'No, I was delivering this bridge and ran out of petrol!'