Overhead Sign Gantry at M77 Dumbreck Interchange

Image: © David Dixon Taken: 24 Sep 2019

A typical “Glasgow-type” sign gantry at Junction 1 of the M77 (Dumbreck Interchange). Gantries of this type were first erected as part of the construction of the Kingston Bridge and its approach roads in 1970 and they are now a familiar sight on the motorway network around Glasgow. They have the following distinctive elements: • near and offside support legs (basically 2 rectangular hollow sections with base plates to allow connections to the foundations), • a main frame (made up of rectangular hollow sections) - Over clad on the front and rear, • a sub frame (made up of smaller hollow sections and welded to main frame), • a sign face - acrylic sheets hung from the front of the sub frame over its full height, • internal electrics - sign lighting provided through the use of several dozen fluorescent battens. More information on “Glasgow Style Gantries” at https://web.archive.org/web/20141106003519/http://www.glasgows-motorways.co.uk/glasgow-gantries/4578281645 (Glasgow’s Motorways, archived November 2014)

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