Work to lay the sewage pipe to Uppark will take place in two phases, with the closure of two sections of road:
Phase 1: B2146/B2141 junction to South Harting: 12 September to 2–8 October
Phase 2: B2146/B2141 junction to Uppark: 3 October to 8–15 November (immediately after phase 1)
More detail on National Trust website – Uppark sewage and road closures project | National Trust