Post-Tensioning for Transportation Structures

Post-Tensioning for Bridge & Transportation Structures

STRUCTURAL TECHNOLOGIES is the exclusive manufacturer of VSL post-tensioning products and construction systems in the United States. VSL systems have a well-earned reputation for their quality, reliability, and durability – and have been used throughout the world since 1956 to build, repair, and strengthen bridges and other transportation structures. Our manufacturing facilities in the United States are certified by PTI’s Plant Certification Program to ensure the highest quality fabrication of materials.

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Post-Tensioning Products

Bonded Multistrand P-T

Bonded Multistrand P-T
We offer a variety of anchorages that can be designed to hold up to 55 strands in duct, and encased in grout to provide optimum corrosion protection.

Bonded Multistrand Post-Tensioning

Bonded Slab P-T

Bonded Slab P-T
Our bonded slab systems utilize flat ducts to reinforce slabs as thin as 5”. Bonded slab systems offer maximum durability while also allowing for future modifications

Customized P-T Systems

Customized P-T Systems
We adapt existing post-tensioning systems or develop unique systems for specific engineering challenges.

Related Products & Services

Stay Cable System

Stay Cable System
Modular stay cable system to meet the requirements demanded for the design, construction and maintenance of cable-stayed and suspended bridges.

Bridge Erection & Construction Systems

Bridge Erection & Construction Systems
Construction of large bridges and related infrastructure with specialized construction systems including equipment, gantries and engineering support.

Heavy Lifting

Heavy Lifting
Our heavy lifting systems provide an effective solution for projects in which cranes or other conventional equipment cannot be used because of excessive weight, dimensions, or space limitations.

Force Protection Systems

Force Protection Systems
Advanced composites and structural systems to protect and harden bridge elements from natural and man-made threats.

Post-Tensioning Repair Systems

Post-Tensioning Repair Systems
Products and systems for the repair and modification of post-tensioned concrete structures

Structural Strengthening

Strengthening Systems
Used to increase the load-carrying capacity of reinforced concrete and other structure types, including masonry, timber and steel.

Corrosion Control Systems

Corrosion Control Systems
Systems for controlling corrosion in reinforced concrete and steel infrastructure.

Seismic Repair & Retrofit

Seismic Repair & Retrofit
Advanced strengthening systems for seismic upgrade of bridge and transportation structures

Post-Tensioning Engineering Support

Post-Tensioning Expertise

STRUCTURAL TECHNOLOGIES’ post-tensioning specialists are committed to bringing innovation to complex projects. Our in-house design professionals have extensive experience in structural design and are active members of technical organizations such as the Post Tensioning Institute (PTI) and the American Concrete Institute (ACI).

Post-Tensioning Team Leader

Read more about our products and applications on our post-tensioning solution builder page

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Design-Assist & Engineered Product Support

• Investigation Support
• Solution Development
• Budget Development
• Specification Assistance
• Constructability Consulting
• Application Engineering
• Quality Control Programs
• Project-Specific Design-Assist


• Preliminary Designs
• Feasibility Studies
• Budget Development
• Optimization of Structural Geometry
• Specification Development


• P-T System Selection
• Customized P-T System Design
• P-T Element Design & Detailing Support
• Integrated Shop Drawings & Building Information Modeling (BIM)
• Quality Control Plan Development


• P-T System Installation Support
• Project Coordination
• Manufacturing & Material Supply
• Equipment Rental
• Safety Planning

Technical Report Series

VSL International has edited and published this series of reports that provide valuable information on post-tensioned concrete applications and best practices

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Grouting of PT Tendons PDF
Post-Tensioned in Buildings PDF
Post-Tensioned Slabs PDF
Detailing for Post-Tensioned PDF
Post-Tensioned Masonry Structures PDF
External Post-Tensioning PDF
Concrete Storage Structures PDF
Floating Concrete Structures PDF
Post-tensioned Foundations PDF
Ground Anchors PDF
Incremental Launching Method – Concrete Bridge Construction PDF
Prestressed Pressure Tunnels PDF
Soil and Rock Anchors PDF

VSL News Archive

View issues of the VSL News Magazine – published by VSL International and highlighting projects around the world as well as innovations in post-tensioning technology.

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