The entire bridge structure was fabricated in 16 individual truss sections, of varying length, but all measuring 3.1m-wide and 2.95m-high.
The sections were fabricated from 120mm × 120mm box sections, with CHS and RHS cross bracing members. A series of 6m-high, 407mm-diameter CHS columns support the bridge.
Prior to being delivered to site, all of the bridge truss sections were transported to a holding depot where the cladding and flooring were installed and the steelwork painted.
“The installation of the trusses required a lot of planning and close liason with Heathrow Airport to deal with the various crane configurations we needed. The largest was a 220t-capacity mobile unit, needed to lift in a 25m long section spanning one of the Airport’s main roads,” said Apex Steel Structures Director Dean Jarvis.