From Monday 22 September 2025 until, it is expected, 31 July 2026, Marktstraße – including the Zellweg/Marktstraße junction – in Clausthal-Zellerfeld will be completely closed. The „Clausthal-Zellerfeld, Zellweg“ bus stop will not be served. Passengers are asked to use the „Clausthal-Zellerfeld, ZOB“ bus stop instead.