The Mumbai-Ahmedabad High Speed Rail (MAHSR) Civil Package C3, executed by L&T Construction in association with TCAP (PMC Civil), and NHSRCL (Client), represents one of India’s most technologically advanced infrastructure projects. Spanning 124 km of Viaduct and Bridges, 6.06 km of NATM Tunnels, 18 Switching Stations, 3 Stations and multiple critical structures, the project demands a rigorous and intelligent digital delivery framework.
Building Information Modelling (BIM) has been strategically embedded at every layer of this framework from design coordination and 4D scheduling to real-time progress monitoring through interactive dashboards.
MAHSR C3 is a Linear Mega Project stretching over 135.45 kms where elevated viaduct comprehends upto 125 km., of which we have 12 mainline steel truss bridges, 25 ramps, 8 SMDs, 6 mountain tunnels and 25 earth structures, 3 stations (Thane, Virar, Boisar) and various auxiliary works.
To bridge the understanding gap and improve design communication, the EDRC BIM team adopted the following tools and methods:
Actively collaborated with internal teams including design, planning and site execution teams, along with external stakeholders such as client representatives (NHSRCL), consultants, and technology partners (Autodesk/Bentley) to align project objectives and implement digital workflows including BIM, Digital Twin and automation strategies.
Conducted regular discussions and coordination meetings with site engineers and execution teams to identify real-time challenges such as constructability issues, sequencing constraints, and design gaps, and explored how BIM, AR/MR and Digital Twin concepts can address these challenges effectively.
Engaged closely with NHSRCL and consultant teams through 3D visualizations, walkthroughs, 4D Dashboards and Augmented Reality (AR) / Mixed Reality (MR) demonstrations to resolve concerns, improve design clarity and align with project expectations.
“The MAHSR C3 project has demonstrated how BIM can transform project delivery when implemented beyond conventional modeling. The team successfully integrated 3D, 4D, 5D, Automation and Digital Collaboration workflows, creating a strong foundation for efficient execution, better coordination and improved stakeholder confidence across the project lifecycle.
Collaborated with Autodesk and other digital solution providers through discovery sessions and workshops to develop POC-based solutions, integrating Digital Twin concepts, automation workflows and cloud-based collaboration strategies.
Utilized Autodesk Construction Cloud (ACC) as a Common Data Environment for real-time model sharing, issue tracking, document management, and integration of digital workflows including automation and Digital Twin data frameworks.
Conducted training sessions, workshops, and review meetings to enable stakeholders to effectively use BIM, AR/MR tools, automation workflows and digital collaboration platforms.
“Working on the MAHSR C3 project has provided valuable experience in applying BIM across multiple disciplines. The project helped us understand how coordinated modeling, 4D planning and digital tools can improve project execution while creating a more collaborative and efficient working environment.”
“The BIM implementation in MAHSR C3 has set a benchmark for digital delivery in our Metro projects. The use of BIM for Design coordination, construction sequencing, and management dashboards has significantly improved planning visibility and established a scalable digital approach for future infrastructure projects.”
A cornerstone of the BIM strategy on C3 is the deployment of interactive 4D Plan vs. Actual dashboards, developed in Power BI and integrated with BIM models across all major structure types.
These dashboards enable stakeholders to compare planned and actual construction status in real time, using a clear colour-coded system: Green (Completed), Yellow (In Progress), and Red (Planned but Not Started).
Also, feature by filters such as by Section, Milestone Stretch, Tunnel Number, Station, GAD Number, and Sub-Structure, the dashboards provide granular insight across Viaducts & Bridges, GAD Steel Bridges, NATM Tunnels, Stations, SMD & Ramps, Approach Lines, and Earth Structures.
“The MAHSR C3 team has effectively utilized BIM as a project management tool rather than just a modeling platform. The integration of Visualization, Quantity Tracking and Real-time progress monitoring has enhanced decision-making and improved coordination between Engineering, Planning and Execution teams.”
A critical enabler of the 4D BIM workflow on MAHSR C3 is the seamless integration between Autodesk Revit models and Primavera P6 schedules, facilitated through Bexel Manager. Structural BIM models authored in Revit are imported into Bexel Manager, where individual model elements are mapped directly to their corresponding Primavera P6 schedule activities using unique Simulation IDs. This linkage creates a live, data-rich 4D environment in which every element from Pile, Pile caps/Foundation and pier to superstructure spans and tunnel linings carries schedule intelligence including Baseline Start, Baseline Finish, and current construction status. As the P6 schedule is updated, the BIM model reflects the latest progress automatically, enabling real-time Plan vs. Actual visualisation across all structure types. This integration has eliminated manual data reconciliation, reduced reporting effort significantly, and provided both the client and internal teams with a single, authoritative source of project truth bridging the gap between the design office and the construction site with unprecedented clarity.
For internal project management, a Pier ID-Wise Progress Monitoring Dashboard has been developed within the Bexel CDE (Common Data Environment) platform. This dashboard allows BIM coordinators and site engineers to select any individual Pier ID such as 29P26 and instantly retrieve a detailed breakdown of structure level activities including Pile Cap, Pier, Pier Cap, and Span Erection, along with their Baseline Start & Finish Dates, actual completion status, and in-progress elements. Colour-coded 3D model views (Green = Completed, Red = Not Started) are synchronised with the tabular data, enabling rapid identification of schedule deviations and facilitating informed decision-making at the pier level. This capability has significantly reduced rework, improved resource planning, and enhanced cross-team accountability.
MAHSR C3 is a highly complex infrastructure project involving diverse structural systems ranging from different type of foundations and girders with complex erection methods to large steel structures, multi-level stations, earthworks, and NATM tunnels each carrying unique sequencing and interface risks.
As part of the 4D BIM implementation the team, has integrated 3D models with the L4 schedule and live execution data to enable real-time planned vs. actual visualization. This 4D BIM approach converts structural complexity into predictable, controlled delivery, supporting proactive risk mitigation and aligning with the company’s digital transformation objectives.
BIM has fundamentally transformed how we monitor and deliver the MAHSR C3 project. Advanced delay analysis in Bexel Manager gives leadership precise, data-driven visibility into schedule deviations and their root causes critical when delivering infrastructure of this national significance.
The 4D BIM capability allows us to benchmark actual progress against planned milestones with a clarity that traditional reporting simply cannot match. The BIM 4D dashboard consolidates multi-disciplinary data into a single platform, strengthening our lookahead planning, enabling faster decision-making, and allowing our teams to address risks before they escalate.
The outcome is measurable improved project efficiency, optimized resource allocation, and a significant reduction in delays. This reflects our unwavering commitment to delivering the Mumbai-Ahmedabad High Speed Rail Corridor to the highest standards.
The implementation of BIM 4D at C3 presented significant challenges due to the need for seamless integration of automated inputs from Primavera, Bexel Manager, and Power BI. As stipulated in the contract, the client was required to validate the dashboard, which involved extensive discussions and multiple iterations to align with expectations.
Despite these complexities, the project team successfully delivered a fully compliant solution that met all contractual requirements. The final dashboard was highly appreciated by the client, reflecting both the technical rigor and collaborative effort invested in the process. This recognition underscores the value of the team’s dedication and the effectiveness of the integration approach
The MAHSR C3 project stands as a benchmark for BIM-enabled infrastructure delivery in India. Through client-facing Power BI dashboards and granular Pier ID-Wise internal monitoring tools, the BIM team has transformed raw model data into actionable intelligence fostering transparency, accelerating decision making, and driving on site efficiency. As the project progresses toward completion, these digital initiatives will continue to evolve, setting a new standard for high-speed rail construction in the country.