Innovative and environmentally friendly practices and materials were also used in the project to promote sustainability and safeguard the surrounding ecosystem, the State noted. Prior to construction, Annsville Circle would flood up to 15 times a year, usually during periods of high tides. The circle would also close two to three times annually due to flooding, significantly disrupting traffic along this major north/south artery on the east side of the river.

Using lightweight fill material manufactured from recycled glass, the project elevated the highway at the Annsville Circle by four feet and lifted other sections of the road in the vicinity of the circle by as much as seven feet. It was one of the first NYSDOT projects to use foamed glass fill, which is environmentally friendly and lightweight. Use of this product, which is manufactured in Pennsylvania, also helped speed up the construction schedule by as much as a year.

Geosynthetic reinforced soil technology, which utilizes fabrics, grids, and meshes, to strengthen and hold soil in place, was also used to speed the project and minimize the need for lane closures and other traffic impacts.

Additional improvements include LED street lighting in the vicinity of the roundabout to enhance visibility, pedestrian crosswalks and a shared use path that connects Paddlesports Park with the Jan Peeck Bridge over Annsville Creek. The path also provides users with access to Annsville Preserve Park and the Hudson River. While major construction has been completed, additional work in the spring will add native trees and shrubs in the center of the roundabout along with roadside grass, state officials noted.

A future project will raise the elevation of the last section of U.S. Route 6/State Route 202 adjacent to Camp Smith. This adjacent project is scheduled to begin next year. U.S. Sen. Chuck Schumer announced in April 2024 that the federal government would be funding nearly $24 million for the project near Camp Smith.