A timelapse video showing giant steel beams being lifted into place over the M1 near Dunstable has been released by Highways England.
Some 38, 100-tonne beams were installed during March and April 2016 for a new junction 11A interchange bridge and new B579 Luton Road bridge as part of the A5-M1 Link scheme.
The project includes the building of a completely new dual carriageway linking the A5 to the M1, three new junctions including a new motorway junction, and six new bridges.
Highways England project manager Karen Green said: “The A5-M1 Link scheme is progressing well and to plan.
“Lifting the beams for these two bridges was an important milestone for the A5-M1 Link Road project, which will offer motorists better and safer journeys and help reduce congestion through Dunstable as well as unlock land for new homes and businesses.
“The two new bridges will be opened to traffic closer to the scheme completion in spring 2017.”