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WASHINGTON (WUSA9) -- DDOT announced overnight closures of 9th Street Expressway between Constitution Avenue NW and Maine Avenue SW starting Sunday until Wednesday.

Authorities said DDOT is installing new overhead sign panels. The closures will take place between Sunday and Wednesday from 9 p.m. to 5 a.m.

In addition, the Independence Avenue SW on-ramp to the 9th Street Expressway will be closed as well, DDOT said.

DDOT suggests the following detour:

• 9th Street Expressway traffic will be detoured to 7th Street NW/SW and D Street SW to access northbound and southbound I-395.

Depending on weather, the work may have to be rescheduled.

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