# Network Rail track renewal projects > Live situation record from CLSTR: https://clstr.news/situations/network-rail-track-renewal-projects > Updated: 2026-08-04T15:07:56.000Z. Sources: 2. Developments: 2. In late July 2026, Network Rail announced the start of extensive infrastructure upgrades at two locations in England. At the historic Chipping Sodbury tunnel north of Bristol, a four‑week, 24‑hour programme began installing soil nails, protective netting, drainage improvements, and replacing over 2.7 km of track, along with brickwork repairs and AI‑driven monitoring. Simultaneously, the Crouch Valley line in Essex was slated for a seven‑day closure in August to replace rails and sleepers, inspect bridges and signalling, upgrade drainage, clear vegetation, replace buffer‑stops, repair platforms, and provide bus replacements. By early August, the Chipping Sodbury tunnel work was completed and the tunnel reopened to passenger and freight services. The upgrade installed more than 3,000 yards of new rail, sleepers and ballast, cleared drainage channels, repaired the tunnel lining, and reinforced surrounding embankments with 2,000 steel soil nails and protective netting. The improvements aim to reduce landslide risk, enhance resilience against extreme weather, and improve reliability on the Great Western route. ## Timeline ### 2026-08-04: Network Rail reopens Chipping Sodbury tunnel after major resilience upgrades Network Rail has reopened the Chipping Sodbury tunnel on the Bristol‑Swindon line after a four‑week upgrade that added new track, drainage, tunnel repairs and soil‑nail stabilisation, boosting resilience for ‑ 2 sources. https://clstr.news/cluster/network-rail-reopens-chipping-sodbury-tunnel-after-major-resilience-upgrades ### 2026-07-20: Network Rail launches major track renewal projects across England Network Rail is upgrading the Chipping Sodbury tunnel with soil nails and drainage, while also replacing old tracks on the Crouch Valley line, enhancing safety and reliability across England. 2 sources. https://clstr.news/cluster/network-rail-launches-major-track-renewal-projects-across-england --- Cite as: Network Rail track renewal projects. CLSTR, https://clstr.news/situations/network-rail-track-renewal-projects