 His company also built part of the approaches to the Forth Bridge.On 17 February 1883 an agreement was reached with John Waddell to construct a tunnel under the River Thames between Tilbury and Gravesend, work which would have carried trains through to Dover for a potential Channel tunnel, although that proposal was eventually dropped.He died at his home, 4 Belford Park, Edinburgh on 17 January 1888, aged 60.