BRIDGE ENGINEERING STARTS HERE

THE #1 SOFTWARE FOR COMPLEX BRIDGE LEADERS Analysis Scenarios enables all analysis types within the same run of analysis Full geometric & material nonlinearity within Stage Construction Analysis Industry leading Bridge Path Coordinate Systems simplify complex alignments AASHTO, Australian, Eurocode, fib MC2010, Indian Roads Congress design codes

STEEL GIRDER BRIDGE DESIGN & RATING Rapidly Model Complex Alignments Transparent Code Check & Load Rating Automatic Design Lane Placement Industry Leading Live Load Analysis Slider Image

The LARSA 4D Difference

At LARSA, we've spent the last three decades leading the field of bridge engineering software with the latest computing technologies produced to the highest standards of quality. During this time we've developed a way of doing things that we call The LARSA 4D Difference.

It's about an unwavering commitment to all steps that go into the development of our software, and the ever-changing needs of the bridge engineering community supported by LARSA's staff of engineers and researchers that are highly specialized, yet very collaborative. But most of all it's about our commitment to deliver the highest degree of customer satisfaction to our clients, who believe there's a better way of doing things.

LARSA 4D Version 8.01.14

LARSA 4D 8.01.14 is the latest release in the LARSA 4D 8.01 Series. LARSA 4D Series 8.01 delivers significant new features including AASHTO LRFD code check for shear studs in I-girder bridges for Fatigue Limit and Strength Limit States, Vehicle Track Structure Interaction (VTSI) Analysis for high-speed rail bridges with car dynamics, and more. Visit LARSA 4D's product download page for more information.

Product Videos

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View the full catalogue of LARSA 4D Videos.

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May 2022

LARSA 4D Live Load Analysis

LARSA 4D live load analysis supports influence lines and influence surfaces. LARSA 4D’s load positioning solver combined with influence-surfaces and compound element forces allows engineers to accurately and rapidly perform refined live load analysis.

February 2022

LARSA 4D Staged Construction Analysis

LARSA 4D performs multiple static and dynamic analyses such as eigenvalue, response spectra, linear and nonlinear time-history, or pushover at any stage within the same run of stage construction analysis, including with or without time-dependent effects. LARSA 4D is the industry's first and foremost staged construction analysis engine.

February 2022

Steel Bridge Module Structure Groups & Modifications

This video reviews the structure groups that are automatically generated after completing "Step-A Model Generation" of the LARSA 4D Steel Bridge Module. Highlights include how to modify structure groups when modifications are required prior to Code-Check or Load-Rating.

January 2022

LARSA 4D Nonprismatic Variation

This video introduces how to rapidly create nonprismatic variation in LARSA 4D and the LARSA 4D Section Composer Tool. LARSA 4D BRIDGE SERIES is an advanced 3D finite element based structural analysis and design program for bridges with industry leading specializations for concrete segmental bridges.

September 2021

LARSA 4D Steel Bridge Module

The LARSA 4D Steel Bridge Module quickly generates refined 3D FEA models of I, Box, and Tub steel girder bridges compliant for AASHTO Bridge Design Specifications. The Module provides industry leading solutions for parametric design and rating of straight and curved steel girder bridges with complex alignments.

Upcoming Events

Visit LARSA's LinkedIn page to stay up to date with our upcoming events and latest news.

The Istanbul Bridge Conference

August 22-23, 2022

Istanbul, Turkey

Visit ibridgeconference.org to learn more and make your arrangements.

ASBI 34th Annual Convention

Oct. 31 - Nov. 2, 2022

Austin, Texas

Visit ASBI to learn more and make your arrangements.

Accelerated Bridge Conference

December 7 - 9, 2022

Miami, Florida

Visit abc-utc.fiu.edu/conference/ to learn more and make your arrangements.

Analysis & Design

Preloaded with the innovative tools necessary to support the life of a bridge project from design to construction, bridge engineering professionals rely on LARSA 4D to deliver the most trusted solution for simple short-span to demanding long-span bridge projects.