What is meant by 'as-built quantity' in highway construction?

'As-built quantity' refers to the actual quantity of work completed at the end of a construction project, which is often used to determine the amount eligible for payment. This concept is vital in highway construction because it accounts for any changes that may have occurred during the project, such as adjustments in materials, designs, or unexpected site conditions.

By documenting the as-built quantities, contractors provide a detailed record of what has been completed, ensuring that the payment process is accurate and reflective of the work done. This contrasts with the initial estimates or plans which may not have anticipated all the variables encountered during the construction process. Understanding as-built quantities helps maintain project accountability and facilitates the final settlement of contracts.