Motorists face delays on one of the main commuter routes into Leeds when work gets under way to update a Victorian sewer.
A 600 metre section under Abbey Road, which is prone to leaks, will be replaced as part of Yorkshire Water's 120m programme to reduce the risk of sewer flooding.
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Work starts tomorrow and is expected to be completed by the end of March.
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Both lanes will remain fully open throughout the works but a section of the bus lane will close.
Den Tansey, from Yorkshire Water's community engagement team, said: "We're doing this work to hopefully put a stop to the series of leaks which have occurred on this ageing section of sewer over the last few years and ensure it's in the best possible condition to continue to perform the vital role it serves.
"We know that any work of this nature has the potential to cause short-term disruption to road users, and we've worked hard to develop a plan which will mean that both lanes are kept fully open, good news to road users.
"We'll do everything we can to complete the work as quickly as possible."
Yorkshire Water's investment is intended to ensure it can deal with increasing flows of waste water.
The investment will benefit hundreds of customers across the region who might otherwise have been at potential risk of sewer flooding, and serve to reduce the likelihood of sewer flooding in the region during storm conditions.
The company has contacted local residents. If homeowners are concerned about workmen, they can call 0845 1242424.