View from the East of the top part of the North portal. Digital image of B 3251.

Description View from the East of the top part of the North portal. Digital image of B 3251.

Date 31/8/1988

Collection Records of the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), Edinbu

Catalogue Number SC 728328

Category On-line Digital Images

Copy of B 3251

Scope and Content Top of north portal from east, Forth Bridge, Edinburgh and Fife The Forth Bridge was built between 1883 and 1890 to designs by engineers Sir John Fowler (1817-98) and Sir Benjamin Baker (1840-1907) with Sir William Arrol (1839-1913) and Joseph Phillips as contractors. This massive steel railway viaduct features three double cantilevers connected by girders with a total span of 2.5 km. This shows the top of one of the portals, stone arches over the internal viaduct which carries the trains over the bridge, and supports the end of the cantilevers. A spiral staircase of cast iron can be seen emerging from the stone. A walkway runs around the top of the portal, and in the distance can be seen the Forth Road Bridge, completed in 1964. The hard granite stonework of the bridge requires very little maintenance due to its high quality construction, but some areas were sand-blasted clean in the late 1980s. The main stone piers are hollow, and weighted with stone and concrete to support the vast weight of the cantilevers at the outer ends. Source: RCAHMS contribution to SCRAN.

Permalink http://canmore.org.uk/collection/728328

File Format (TIF) Tagged Image File Format bitmap