Skip to main content

3psLCCA User Guide

Main Logo

Version: 2026.04.1 | Developed at: Osdag, FOSSEE, IIT Bombay | Supported by: ConstructSteel, Ministry of Steel, INSDAG

3psLCCA is a desktop application for evaluating the life cycle cost of bridges across the initial, use, and end-of-life stages. It accounts for a comprehensive range of costs, including construction, inspection, maintenance, traffic disruptions, demolition, recycling, and other associated costs. The software is based on the 3PS-LCC (Three Pillars of Sustainability Life Cycle Cost Assessment) framework which integrates these costs into a single monetary metric while capturing the economic, environmental, and social dimensions of sustainability throughout the bridge life cycle.

LCCA evaluates the total cost of a bridge across its entire service life - not just initial construction, but maintenance, repair, demolition, recycling, and associated environmental and social costs. All costs are brought to a common present-day value using discounting, allowing direct comparison of different design alternatives.

The analysis is structured around three pillars of sustainability:

Sustainability Components

  • Economic - direct monetary costs: construction, maintenance, demolition
  • Social - road user costs: delays, accident costs, and detour expenses incurred during construction and maintenance activities
  • Environmental - carbon emission costs across the bridge life cycle

This guide uses a single example project throughout: a 2-lane RCC T-Girder road bridge over the Sone River on a state highway in Bihar. This is a straightforward, commonly built bridge type - suitable for demonstrating all features of the application without introducing complexity specific to long-span or special structures. All field values, quantities, and screenshots in this guide refer to this project.

Coverage:

  1. Launching the application and the Home screen
  2. Creating and opening projects
  3. Comparing projects
  4. General Information and Bridge Data input
  5. Construction Work Data (Foundation, Sub Structure, Super Structure, Miscellaneous)
  6. Financial, Traffic, Maintenance, Demolition, and Carbon Emission parameters
  7. Running the analysis and interpreting results
  8. Generating a PDF report

Technical terms are defined inline at their first occurrence throughout this guide.