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Last updated: 03:53

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Major Works at Horsham in Summer 2021

Network Rail will carry out major engineering works at Horsham in Summer 2021

Why is this happening?

The works are planned to replace old track and signalling with modern and more reliable equipment and to carry out work at stations. This will improve journeys on two routes in the Arun Valley, as well as the wider region by reducing delays and helping to make our services more reliable.

When is it happening?

There will be closures of all lines through Horsham on:

  • 9 days between Saturday 14 to Sunday 22 August including weekday
  • Saturday 4 and Sunday 5 September
  • Sunday 3 October

What area is impacted?

The works will mean that no trains can run on the Arun Valley line between Three Bridges and Horsham, nor on the lines used by Southern services between Dorking and Horsham, or beyond to Arundel. Replacement buses will run between Three Bridges and Horsham. During the weekday closure from 16 to 20 August a limited train service will run between Crawley and Three Bridges. Buses will also replace Southern trains between Littlehampton and Three Bridges via Horsham and between Horsham and Dorking.


What does this mean for my journey?

Details of the revised service up to September can now be found in the National Rail journey planner here.

Longer distance rail services such as from Portsmouth & Southsea or Chichester that would normally use the Arun Valley line will be diverted via Hove and the Brighton Main Line.

The station car parks at Arundel and Crawley will also be closed on all the dates listed above.

We’ve timed these works for the Summer holidays when fewer people are travelling, and where some may be more flexible with their travel plans.

Where can I find more information?

You can read more about the works at