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Project: Suitland Parkway
Location: Upper Marlboro, Maryland Entrance to Andrews Air Force Base
Installer: Breslin Contracting, Inc.
Customer: The Concrete General
Pile Design: The Concrete General
Materials Supplier: Earth Anchoring Suppliers
Installed (11) AB Chance SS175 Square shaft helical tieback piles to an embedment of 32’ to support a deep excavation at abutments with the following:
- SS175 10”/12”/14” leads
- SS175 14”/14”/14” Trailer extension
- SS175 extensions
SS175 Termination adapters, 1” Dywidag rods wth nuts and 5”x5” plates
Tiebacks were installed with a CAT 305 excavator equipped with a Digga Drive Head and TorqueHub monitoring system
History: We were called by the customer to provide helical tiebacks in support of their shoring system installation. This is a small part of a multi-year interchange project
Challenges on this project included:
- Provided working elevations made installation difficult
- Unexpected soil condition on a few of the tiebacks
Outcome: A few tiebacks installed to slightly lower torque than required. An additional tieback was added, one was relocated, and a few were installed deeper to compensate
Next Phase: Customer was able to install the balance of the shoring and proceede with excavation
Breslin Installs (11) Helical Tiebacks at Maryland Entrance to Andrews Air Force Base
Spring, 2026
Breslin Contracting, Inc.
18 King Court
New Castle, DE 19720
Phone: 302-322-0320
Fax: 302-322-8907
