This problem is exacerbated by Welwyn North railway station situated at the northern end of the viaduct, which blocks the line while trains are stationary.
viaduct | Viaduct | Starrucca Viaduct | Park Avenue Viaduct | Millau Viaduct | Welland Viaduct | Sankey Viaduct | London Road viaduct | Leaderfoot Viaduct | Garabit viaduct | Canton Viaduct | Wharncliffe Viaduct | Victoria Park Viaduct | Schmittentobel Viaduct | Rectory Junction Viaduct | Lethbridge Viaduct | Landwasser Viaduct | Intercity Viaduct | Holborn Viaduct railway station | Glenfinnan Viaduct | Giltbrook Viaduct | Alaskan Way Viaduct replacement tunnel | Alaskan Way Viaduct |