Installation of eight 59m-wide superspan motorway gantries is starting this week in Manchester.
The 78t gantries will carry electronic signs and cross whole sections of the M60 and M62, as part of its smart motorway upgrade.
The first gantry will be installed tonight between junctions 19 and 20 on the M62, and will require a special 500t crane for the job.
Highways England project manager Stephen Hill said: “These new gantries are quite a bit lighter than the old gantries we removed earlier in the project. But they are still very large structures and are actually arriving on site in two parts. A 150t mobile crane will then be used to join the two sections together before the larger crane lifts the whole structure in place across the motorway.”