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Field Visit
Date April 1984
Event ID 1082629
Category Recording
Type Field Visit
Permalink http://canmore.org.uk/event/1082629
This two-arched bridge carries an Argyll Estate road across the River Shira 300m WNW of Kilblaan farm. It was begun in 1760 by the Dumbarton master-mason John Brown (see Nos. 255, 266), and was completed in 1768 (en.1).
The bridge measures 26.5m from E to W, including the abutments, and carries a level roadway 3.9m in width within 0.4m parapet-walls. Its masonry is of lime-mortared rubble, but the central and abutment-piers, up to springing-level, are of schist ashlar with channelled tooling. In all three piers the springing is marked by a projecting ashlar band 0.13m high, and similar bands enclose the narrow schist voussoirs of the arches, which are 0.71m in depth. The triangular cutwaters of the central pier are extended upwards as flat-fronted buttresses which die into the wall-faces 1.5m below the slab-copings of the parapet.
The two segmental arches are of almost identical dimensions, each having a span of about 10.6m and a height to the soffit of 4.5m above water-level. The springing of the W arch, however, is set 0.4m higher than the other. The height to the parapet is 6.7m above water-level.
RCAHMS 1992, visited April 1984
