The Midland Railway viaduct at Calder Grove (known as Crigglestone Viaduct) has 21 arches and was built in 1906 as part of its never-completed Sheffield-Bradford route.
The eastern arch sits over the existing Wakefield-Barnsley line. The former Crigglestone curve (Crigglestone Jnc to Horbury Station Jnc) passed beneath its western approach embankment whilst the central section towered over Pepper's Yard British Oak site and the old line serving the collieries around Flockton. From the westerly end you get a view of the former Harlteys coilery site.
End-to-end, the viaduct spans 1,270 feet.
View onto the old Hartleys coilery