WESTPORT — The North Avenue bridge over the Merritt Parkway will be completely closed to traffic Wednesday night into early Thursday as reconstruction of the span continues.

The closure will start at 10 p.m. Wednesday and continue to 3 a.m. Thursday, according to information provided to town officials from the state Department of Transportation.

Detour notices will be posted.

Reconstruction of the bridge, which began early last year, has been beset by delays that has pushed completion months beyond the initial day.

While work continues this spring, traffic will remain limited to an alternating, single lane controlled by traffic signals.