N.J. Stat. § 27:19-21: Liability during repairs

When it shall be necessary to repair or rebuild a bridge, culvert or viaduct the public authorities or person so repairing or rebuilding it shall not be liable for damages occasioned by obstructing or stopping navigation or traffic, if the repairs or rebuilding be prosecuted with all possible dispatch, and notice of such intended repairs or rebuilding which will result in obstructing or stopping navigation be given at least three days prior to commencing the work, by publishing notice thereof in some newspaper circulating in the county or counties adjacent to the bridge or viaduct.