At times this weekend, all four-lanes on one side of the Mario Cuomo Bridge will be closed.

On Wednesday, the New York State Thruway Authority announced Rockland-bound traffic on the Governor Mario M. Cuomo Bridge will shift to the other side of the concrete median Friday night, weather permitting, to allow for work on the bridge's biking and pedestrian path as well as six overlooks.

Drivers should plan for multiple lane closures and brief traffic stoppages so workers can reconfigure the landings and stripe lanes at both ends of the 3.1-mile span during the overnight operation, officials say.

Near the main span, Rockland-bound traffic will be re-aligned towards the center of the bridge. After passing the main span area, traffic will re-align with the southern side of the westbound crossing.

Multiple lane closures will begin around 8 p.m. Friday night. At least one Rockland-bound lane will remain open, except when State Police stop and temporarily hold traffic.

During the shift, there will be two traffic stops of all four lanes near Exit 9 in Tarrytown, each lasting up to 20 minutes. It's unclear what time all four lanes will be closed.

The traffic stops will allow Thruway Authority and Tappan Zee Constructors workers to stage operations, stripe lanes at both ends of the bridge and shift barriers and equipment, officials say.

The construction will also cause the Exit 9 northbound on-ramp to be closed until Saturday morning. Drivers will be detoured to the exit 8 on-ramp.

The Westchester-bound span won't be affected.

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