What must be done when required by contract regarding the outside edge of the roadway pavement?

The correct approach when dealing with the outside edge of roadway pavement, as mandated by contract, is to create a shoulder wedge according to specific provisions. This practice is crucial because the shoulder wedge serves several important functions, such as providing structural support to the pavement, facilitating drainage, and enhancing overall safety for vehicles.

When specific provisions are outlined in a contract, they usually pertain to the required design and construction standards that ensure the roadway maintains integrity over its lifespan. These standards often take into account factors like the anticipated load, environmental conditions, and drainage requirements, which directly influence how the shoulder must be constructed.

By adhering to these specifications, the construction of the roadway remains compliant with engineering standards, ensuring longevity and performance. Properly designed shoulder wedges also help prevent issues such as edge cracking, which can occur if the pavement is left unfinished or improperly constructed. Thus, following contract requirements for the shoulder wedge is critical for achieving the desired operational and safety characteristics of the roadway.