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Highways officials have admitted roadworks on the M2 and M20 are "frustrating" for motorists but defended the works being carried out at the same time.
Motorists are facing delays on the M2 and M20 while work is carried out on the Medway Bridge and Smart Motorway scheme respectively.
London-bound M2 drivers are currently enduring a round-the-clock two lane closure on the, running between junctions two and three for bridge joint replacement works.
Junction 3's exit slip has also been closed overnight since Monday - the same night closures came to the M20.
The M20 London-bound carriageway has been closed overnight from 8pm to 6am between junctions four (Leybourne) and two (Wrotham).
Further closures are being planned this weekend, which can be viewed here.
Karen Davies, chair of the Kent Corridor Coordination Group at Highways England, said: "The improvements represent a huge investment in Kent’s economy.
"However, we appreciate that roadworks can be frustrating, and we are working hard to keep disruption to a minimum and make sure that all the different sets of road works are closely coordinated.
"The roadworks being carried out across Kent represent hundreds of millions of pounds being invested in the county, including four major improvement schemes, thousands of maintenance and renewals projects and measures to increase the road network’s resilience to disruption.
"The improvements represent a huge investment in Kent’s economy."