SDI offers a full range of post-tensioning and stay cable systems for temporary and permanent applications including shop-fabricated bridge cables and lock coil cables as well as field-fabricated stay cables using prestressing strand. SDI stay cables and PT anchorages are industry-approved to strict standards for a wide range of structural applications.

1. Post-Tensioning
2. Stay Cables
3. Heavy Lifting
4. Bridge Erection Equipment
5. Energy Infrastructure
6. PT Repair

SDI is a nationally recognized leader in the repair, alteration, and strengthening of post-tensioned concrete and steel structures. With 20 years of experience as a post-tensioning system supplier and installation contractor, SDI has both the technical proficiency and practical know-how to perform any repair or retrofit operation.

1. Post-tension repair
2. Concrete Restoration
3. Barrier Cables
4. Structural Strengthening

A general contractor and technology supplier with over two decades of experience, SDI is a turnkey contractor in new system design, construction, and installation. SDI’s experience, innovation, and expertise cover a range of transit needs: refurbishments, operation & maintenance, new systems, and control panel fabrication.

1. New Systems
2. Operation & Maintenance
3. Renovation & Service

SDI’s rich, broad, and deep contracting experience set a firm foundation for SD, its growing branch of commercial real estate development.

1. Investment
2. Development
3. Management