Roadways represent the paved central portion of the street that allows access to and movement through an area. Most roadways are primarily designed for motor vehicle use.

asphaltic concrete

Asphaltic Concrete

Commonly known as asphalt, this material is a mixture of asphalt bitumen and stone aggregate, usually laid on a concrete base and compacted by a roller to form a smooth and solid road surface.


porous asphalt

Porous Asphalt 

Asphaltic concrete with open-graded aggregate, in which the amount of fine particles is kept to a minimum, and in which the binder content is lower, allowing water to pass through into an open-graded reservoir.




Mixture comprising cement(s), aggregate(s), and water, which may include other chemical admixtures that hardens to form a solid road surface. The mixture may be poured over metal reinforcement bars.


pervious concrete

Pervious Concrete

Concrete mixture using minimal cementitious paste to coat the aggregate, and using little or no sand or fine aggregate, leaving substantial void content. This allows water to pass through to an open-graded reservoir underneath.


granite block

Granite Block

Historic smooth-finish granite block unit pavers often referred to as “cobblestones,” commonly used throughout New York City in the nineteenth century.