Redcar Lane is closed due to level crossing failure at the A1085 Thrush Road.
The barriers have been stuck down since this morning, November 15, affecting traffic between West Dyke and the Coast Road.
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The constituency of Washington and Sunderland West includes the UK's largest car plant, which was opened by Nissan in 1984.
This seat was formed prior to the 2010 General Election, taking in Sunderland city centre and the Ryhope area to the south.
The constituency of Stockton South includes relatively affluent areas like Yarm and Eaglescliffe.