FDOT Code 30 bedding stone, also known as Code 30 aggregate, FDOT bedding rock, clean limestone bedding stone, or specification-grade drainage aggregate, is a clean, crushed stone used for utility, drainage, roadway, and infrastructure construction throughout Florida. It is produced to meet applicable Florida Department of Transportation requirements for approved aggregate quality and project performance.
This washed, angular aggregate is commonly supplied in a controlled coarse gradation with little to no fines, allowing water to move freely while providing firm, uniform support around pipes, conduits, vaults, and underground structures. The fractured stone helps distribute loads, hold installed utilities in position, and create a dependable bedding layer beneath pavement and structural improvements.
FDOT Code 30 bedding stone is widely selected for municipal, commercial, transportation, and utility projects that require clean, free-draining aggregate with consistent performance. Its combination of stability, drainage, and durability makes it well suited for trench installations, stormwater systems, sewer construction, structural backfill, and specification-driven roadway work.
Common Applications of FDOT Code 30 Bedding Stone
- Underground utility and conduit installations
- Stormwater and sewer pipe bedding
- Waterline and drainage-pipe support
- Trench backfill around utility systems
- Structural backfill around vaults and drainage structures
- Free-draining layers beneath pavement
- Roadway and infrastructure construction
- Municipal and commercial utility projects










