Essex Highways hopes its completed £200,000 drainage improvement scheme will bring relief to flood weary residents.
The work has taken place on the A120 at Bridge Hall Road, Bradwell, and Water Lane, Stisted.
The project - partly funded by the Highways Agency's £150k contribution - was delivered in five weeks and completed more than a week ahead of schedule.
Councillor Rodney Bass, cabinet member for highways and transportation, said: "Thanks to collaborative working with parish councils, the hard work of our operatives and engineers, and funding from the Highways Agency, this scheme will resolve the long-term flooding issue that has affected the area for a number of years."
The first stage involved installing a new manhole and pipe to take the water, which was flooding properties close to the A120, to a ditch.
The second stage involved installing a new drainage system on the full length of Bridge Hall Road/Water Lane to take water to the outfall at the brook leading to the River Blackwater.
A full road closure was in place to minimise risk to the public and workforce while the works were in progress.
Access was maintained to households during the delivery of the project.
Andy Jobling, Highways Agency Asset Manager, said: "We are committed to safe and reliable journeys and are pleased to be able to work with Essex County Council and local parish councils to alleviate flooding issues for the benefit of local residents and motorists."