OpenTunnel Designer 2026 v26.00.00.83 Win x64

Software Overview

OpenTunnel Designer provides a dedicated environment for tunnel information modeling, covering geometric layouts, connections to analysis and design workflows, visualization, and documentation. It supports both conventional tunnels and mechanized tunnel boring machine (TBM) projects.
The application uses parametric modeling to connect tunnel components and geometry, helping users reuse and assemble defined elements rather than relying solely on conventional 3D drafting. Tunnel models can be associated with roadway or rail geometry so that changes to the underlying alignment can be reflected in the model.
The 2026 release expands the modeling capabilities for steel arch reinforcement and TBM UTR as-built tunnels. It also introduces reporting updates and selected improvements inherited from the MicroStation platform.

Key Features

• Parametric modeling tools for conventional and mechanized tunnel projects.
  
• Support for geometric layout, visualization, documentation, and analysis-related workflows.
  
• Steel arch reinforcement modeling using catalog shapes.
  
• Country-specific code options for catalog steel shapes.
  
• TBM UTR As Built modeling based on ring positions and associated rotations along an alignment.
  
• Support for creating as-built digital twins from TBM tunnel ring information.
  
• Updated reports covering newly added tunnel elements.
  
• Dedicated reporting for TBM UTR As Built models.
  
• Integration with MicroStation PowerPlatform and Civil Platform technologies.
  
• Cloud-based Component Center 2.0 support for downloading cells.
  
• MicroStation text editor improvements for bullet, numbered, lettered, and case-formatted lists.
  

Why Choose OpenTunnel Designer

OpenTunnel Designer is designed for engineering teams that need a specialized modeling environment for tunnel infrastructure rather than a general-purpose 3D drafting workflow. Its parametric approach allows tunnel components to be defined, reused, and assembled while maintaining relationships with project geometry.
The application supports tunnel development throughout multiple project stages, from conceptual and detailed design through construction and later maintenance and operations. It also provides tools for visualization, documentation, and preliminary cost estimation.

What's New

OpenTunnel Designer 2026.00.00 includes enhancements and corrections across the tunnel modeling environment and its underlying technology stack.
The technology stack includes MicroStation PowerPlatform 26.0 (26.0.0.974), Civil Platform (26.0.0.365), certification with PW v25.0.01.8026, and CONNECTION Client (25.0.2.19).
The steel arches tool now provides options for modeling steel arch reinforcement using catalog shapes. Country-specific codes for catalog shapes can be activated through OpenTunnelDesigner.cfg. Detailing of these elements requires interoperability with ProSteel (ProStructures), while the 2026 release does not transfer these elements to PLAXIS.
TBM UTR As Built allows users to create a TBM UTR tunnel from a list of ring positions and associated rotations along an alignment. This can be used for as-built digital twin creation or to define a specific configuration during design.
Reporting has also been expanded to cover the newly introduced elements, including a dedicated TBM UTR As Built report. MicroStation-related enhancements include improvements to the Geographic Coordinate System dialog, text editor list formatting, and cloud-based Component Center 2.0 cell downloads.
The release also corrects issues affecting Material Editor startup, perforator behavior, auxiliary lengths and positioning, tunnel reference lines, tunnel and portal template variables, shotcrete and excavation subspaces, reinforcement property editing, perforator-related voids, and section names in quantity reports.

System Requirements

Windows *

Frequently Asked Questions

What is OpenTunnel Designer used for?

OpenTunnel Designer is used for tunnel information modeling, geometric design, visualization, documentation, and related analysis and design workflows for conventional and mechanized tunnels.

Does OpenTunnel Designer support TBM tunnels?

Yes. The software supports mechanized tunnel workflows, including TBM UTR modeling and the creation of TBM UTR As Built tunnels from ring positions and rotations along an alignment.

What is the steel arch feature in the 2026 release?

The 2026 release adds tools for modeling steel arch reinforcement using catalog shapes, with options for country-specific codes. Detailing requires interoperability with ProSteel (ProStructures).

Can OpenTunnel Designer create as-built digital twins?

Yes. The TBM UTR As Built tool can create tunnel models from ring positions and associated rotations, supporting as-built digital twin workflows.

What platforms does OpenTunnel Designer use?

The 2026 release uses MicroStation PowerPlatform 26.0 and Civil Platform 26.0 as part of its underlying technology stack.

Home Page

www.bentley.com

Product Information

• Software Name: OpenTunnel Designer
  
• Version: 2026 (26.00.00.83)
  
• Architecture: x64
  
• Languages:english
  
• License type: Full Version
  
• File Size:6.8 Gb
  

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