Four 108-tonne bridge beams were lifted into place over the weekend as work continues on the Lincoln Eastern Bypass.
The bridge beam sections were assembled next to the new bridge supports and lifted into place using a 1200-tonne mobile crane during a 12-hour Market Rasen to Lincoln rail line closure.
Once complete the bridge deck, which will be constructed using heavily-reinforced concrete, will have a span for 40 metres over the existing Market Rasen to Lincoln railways lines.
The bridge sections were manufactured by Braithwaite Engineers Ltd in Newport, South Wales.
A total of around 30,000 work hours have already been spent on the project to date, including the manufacture of the beams.
The new road is expected to be open by May 2020.
Executive Member for Highways and Transport, Councillor Richard Davies, said: “This is a huge milestone in the construction of the new bridge in Greetwell.
“Not only does it show we’re making significant progress in getting the new crossing completed, but it shows that we’re making big strides with the bypass, overall.
“Now that the beams are in place, Galliford Try will start building the bridge deck over the next eleven weeks, with a view to the whole bridge being complete by the end of October.
“From then, we can start using it to transport materials over the rail line for use elsewhere on-site.”
Councillor Davies added: This month, we’ve also started stripping soil across the site and starting the bulk earthworks, as well as making a start with constructing the new Greetwell Road roundabout.
“The scheme as a whole is progressing ahead very well, and we’re still on track for having the new road open by May 2020.”