Drivers near Boston will face several days of disruption when a busy level crossing is temporarily closed.
Network Rail’s work at Swineshead level crossing on the A17 was originally planned to take place over the Easter Bank Holiday.
The improvement work will now take place between Thursday, May 21 and Monday, May 25.
Network Rail engineers will replace the old level crossing barriers with new, modern ones which will help to reduce delays to services and improve the reliability of the crossing.
During the work, motorists, cyclists and pedestrians will not be able to use the crossing and there will be a temporary road closure in place.
There will be a fully signposted diversionary route for motorists and the work will not impact on train services.
The work had been postponed after a small amount of asbestos was found in the equipment foundations at the barriers. The asbestos, which is below ground level, will be safely removed by specialists.
In addition, Network Rail is also continuing to make progress on plans to install a new type of heavy-duty road surface at Swineshead level crossing, which motorists on the busy A17 will benefit from.