The A23 Crawley Avenue is partially blocked with heavy traffic due to an accident at Ifield Avenue on the roundabout, the AA said. The incident is affecting all approaches to the roundabout.
The A23 northbound will be shut from the Gatwick Road Roundabout towards Horley from 8pm to 6am for roadwicks.
There is very slow traffic on the A259 Chichester Road Eastbound from B2144 Drayton Lane to Elbridge Avenue. Travel time is around ten minutes.
The A273 is has reopened after it was shut due to a derelict barn fire both ways from the B2036 London Road to The Friars Oak Pub.
A two vehicle crash has partially blocked the A2270 Willingdon Road both ways between Rodmill Drive and Willingdon Road. Traffic is said to be coping well.
On the railway due to a points failure between Three Bridges and Balcombe, services in both directions may be delayed by five to ten minutes, Southern Rail said.