For 90 years, the Regional Plan Association has sought to improve the quality of life in NY-NJ-CT region. In a preview of its 4th Regional Plan, the RPA articulated four categories of improvements needed to avert stagnation and sustain a fair and thriving metropolitan region: Prosperity & Opportunity, Affordability, Health & Livability, and Resilience.
Widening the paths on the George Washington Bridge to support the growth of cycling through the region helps achieve all four. 
Prosperity & Opportunity
Cycling infrastructure helps to attract the millennial workforce we’ll need to maintain our competitiveness. 
Connecting the NY and NJ bike grids with a robust GWB will accelerate “fill in” and draw bike share to working class, minority communities in Upper Manhattan and the West Bronx, which too often are the last to benefit from transportation improvements. 
Relying more on bike commuting would allow Bergen to grow population and jobs without increasing congestion and spending on roads and mass transit.
RPA calls for reducing expenditures for housing, utilities and transportation from 51% of household income to 45% by 2040. Bike commuting saves $1400 per year versus mass transit and many thousands more over owning a car. 
Biking reduces the need for off-street parking, which lowers the cost to build affordable housing and frees up precious real estate near mass transit for residential and commercial development. 
Should a trans-Hudson rail tunnel have to be taken offline for extended repairs, which would significantly disrupt train and bus service throughout the region, a widened GWB will afford residents alternate means to get to work. [Note: This will happen for 18 months starting in 2019 when the “L” subway is shut down to facilitate East River tunnel repairs.]
Every bike trip offsets the emissions of one car trip, which will help the region realize its goal of reducing greenhouse gas emissions 80% by 2050.
Health & Livability
By enhancing rural economies, cycle tourism reduces the need to convert open space for development. 
Access to good cycling facilities creates more livable streets and enhances resident opportunities for exercise and recreation.
Role for Partnerships
Following London-Stockholm, RPA urges the creation of a public-private “super agency” to plan and finance regional transportation infrastructure. Notably, both cities have invested extensively in cycling infrastructure as the most cost-effective method of moving people around. 
Gateway and a new bus terminal are billions of dollars and decades away from impacting the region, but elements of a wider GWB can be online as soon as 2020, and at very low cost.
Update: Subsequent to making these remarks, in July 2016 the Regional Plan Association signed on in support. 
150 organizations, businesses and electeds have called upon the PA to widen the GWB paths. Edgewater, Fort Lee, Englewood Cliffs, Yonkers plus eight community boards in Manhattan and the Bronx alone comprise 1.25 million residents.
 The Poor Bike, the Rich Bike-Share, City Lab – http://www.citylab.com/commute/2015/10/the-poor-bike-the-rich-bike-share/413119/
 NYC – $2.75 bus-train fare
 “We will be proposing a regional bike network as part of the Fourth Plan, and I would fully expect this to be part of it.” – Thomas Wright, Executive Director, RPA