The Port Authority also started work on some other projects to renovate or replace bridge components. The lower level was repaved in 2016, and repainting work and maintenance platform replacement on the lower deck was completed in 2017. The bridge's 592 suspender ropes, which run vertically between the main suspension cables and the deck, were to be replaced between 2017 and 2023 to fix damage caused by excessive heat and humidity. The staircases leading to the sidewalks on both the northern and southern sides of the upper deck were also being replaced with ramps that were compliant with the Americans with Disabilities Act of 1990. The Trans-Manhattan Expressway was being renovated in conjunction with this project. On the New Jersey side, the Palisades Interstate Parkway cloverleaf ramp onto the eastbound George Washington Bridge would be replaced at a cost of $112.6million by 2019. Two overpasses near the bridge would also be refurbished by 2022.