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Aggregate Source Program

The Agency maintains an Approved Aggregate Source Program which evaluates aggregates for use on Agency construction projects. A guidance document, linked below, details the requirements and process for users to acquire approval. Questions regarding the program and process should be directed to

Click below to see the current approved sources. This interactive webmap replaces the previous list of sources.  This webmap can be used to search for approved sources by material type and location, including current expiration dates for each approved material.


Approved Aggregate Sources WebMap

Request Forms: Fill out a request form for each material category requiring approval. Forms are automated and will generate a notice of receipt.

Bituminous Concrete Aggregate Source Request Form

Structural Concrete Aggregate Source Request Form

Unbound Aggregate Source Request Form


Guidance Document – Revised April 2023

Sample Receiving Guide – Revised April 2023