MADISON (WKOW) -- Overnight closures on John Nolen Drive began Monday.

The northbound lane and the Capital City Trail are closed from 7 p.m. -6 a.m. through Thursday.

The detour takes you to Park St. via Olin Avenue.

The southbound lane is still open.

The closures are part of phase one of the significant reconstruction project on John Nolen Drive. It's expected to last nearly two years.

All six bridges along the causeway are set to be reconstructed due to deterioration. Additionally, three new bridges will be added for bike and pedestrian traffic.

Other improvements include urbanizing the highway to enhance traffic flow and safety and narrowing roadways.

More information can be found here.

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