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The “hairball” intersection in Downtown Madison should be a little less hairy to navigate later this year.

City engineering officials announced construction on the project at the confluence of Williamson, East Wilson and South Blount streets will begin April 1, with some utility work already starting on Monday. Construction is expected to be completed by Aug. 8.

The work includes replacement of curb, pavement, sanitary sewers and storm sewers, better bicycle facility improvements and replacement of the railroad crossing cutting through the intersection.

South Blount Street will be the most affected by construction, with only local traffic allowed to use the street for about a month of the more than four-month project.

Only one lane of traffic will be maintained in each direction on East Wilson and Williamson streets, which will cause traffic delays during peak traffic periods.

The construction zone on East Wilson Street runs from South Franklin Street to South Blair Street; the zone on Williamson Street runs from South Blair Street to South Blount Street; and the zone on South Blount Street runs from the Capital City Bike Path to Williamson Street.