HPP is a TxDOT pre-qualified materials producer. Our production products include select fills, embankment, flex base, riprap and specialty products.
- Embankment
- Click here to download material specifications
- Click here to download material specifications
- Cement Stabilized Base
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- Click here to download material specifications
- Flex Base
- Click here to download material specifications
- Click here to download material specifications
- Riprap
- Click here to download material specifications
- Click here to download material specifications
- Excavation and Backfill
- Click here to download material specifications
- Click here to download material specifications
- RAP
- Click here to download material specifications