LARSA 4D BRIDGE Plus is the premier tool for the analysis and design of segmental, cable-supported, skewed, or other advanced bridge types. This package includes everything in LARSA 4D BRIDGE plus pre- and post-tensioned tendons and material time effects such as creep and shrinkage.

LARSA 4D's Steel Bridge Module uses a wizard-like interface to simplify 3D model generation for complex I, box, and tub girder bridges, while providing fully integrated AASHTO compliant code check and load rating tools, along with the ability to move beyond typical grillage analysis to utilize influence surface based live load.

LARSA's Section Composer is a graphical companion tool for modeling arbitrary sections for use in LARSA 4D. Section Composer supports standard, parametric, nonprismatic, and custom shape sections

Nonlinear Pushover/Buckling.

Nonlinear Time history.

Linear Static Analysis.

Nonlinear Static Analysis.

Eigenvalue Analysis.

Response Spectra Analysis.

Linear Time History Analysis.

Rolling Stock Analysis.

Vehicle Track Structure Interaction (VTSI) Analysis.

Influence Line Based Live Load.

Influence Surface Based Live Load.

Bridge Path Coordinate Systems.

Balanced Cantilever.



Material Time Effects.

Tendond Stree/Slacken.

Incemental Launching.

Basic Staged Construction.

Analysis Scenarios.

Support Activities.

Element Construction Activites.

Deconstruction Activities.

Constraint Activities.

Truss & Beam Element.

Thin & Thick Plate Behavior.

Shell Element.

Grounded Spring.

2-Node Spring with 6x6 Stiffness.

6-Node & 15-Node Wedge.

8-Node & 20-Node Brick.



Compression Only Truss.

Tension Only Truss.

Nonlinear Elastic Spring.

Hysteretic Inelastic Spring.

Moment-Curvature Beam.

Nonlinear Hysteretic Beam.

Beam with Inelastic Connection.

Friction Pendulum.

Sliding Friction.

Viscous Dashpot.

4D BRIDGE PLUS is LARSA's most advanced license package which includes access to all features developed at LARSA.

Featuring time-dependent material effects, post-tensioning, incremental launching, and vehicle track structure interaction (VTSI) analysis for high-speed railroad bridges, 4D BRIDGE PLUS supports all bridge forms including the following:

High-Speed Railroad Bridges.

Concrete Segmental Bridges.

Post-Tension Concrete Bridges.

Advanced Cable-Stayed Bridges.

Suspension Bridges.

Extradosed Cable-Stayed Bridges.

Pre-Cast Bridges.

Pre-Stressed Concrete Bridges.

Arch Bridges.

Stressed-Ribbon Bridges.

Steel I, Box and Tub Girder Bridges.

Truss Bridges.

Slab Bridges.

The best way to experience the strengths of LARSA 4D is with a hands-on free trial. To request a no-risk 30-day trial license to LARSA 4D BRIDGE PLUS, please fill out the following form.