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We are considering options to improve the A1 between Birtley and Coal House from junctions 65 to 67 by widening it to a 3 lane carriageway and replacing Allerdene Railway Bridge.
We have narrowed our designs down to 2 options:
option 1a involves the reconstruction of Allerdene Railway Bridge south of its current location, improving the existing road alignment and safety. To accommodate the new alignment, Smithy Lane overbridge will have to be replaced.
option 1b involves the replacement of Allerdene Railway Bridge in its current location. This will require a temporary bridge to be constructed to carry traffic over the A1 while the new bridge is constructed. This option is a more complex scheme to construct requiring more traffic management and a longer construction period.
We would like your feedback on these proposals.