50 River St, Sleepy Hollow, NY 10591

Edge-on-Hudson BIM Project

Project Type

Mixed-Use

Sector

Mixed-Use

Project Area

70-acre

LOD

LOD 400

Estimated Completion

2026

Project Overview

Edge-on-Hudson is a $1 billion, transit-oriented mixed-use development transforming the former 70-acre General Motors assembly plant site in Sleepy Hollow, New York, located just 25 miles north of Manhattan along the Hudson River. The project will encompass 1,177 units of housing (including townhomes, condos, and apartments), a 140-room boutique hotel, 135,000 square feet of retail space, 35,000 square feet of office space, and more than 16 acres of parkland, plus a 1.5-mile waterfront promenade linking to existing riverside parks.

Why This Project Needed BIM

Historic Structure Integration

Point cloud scan data was the only reliable way to validate tolerances between the 1906 masonry and new steel connections before fabrication.

10,000-Ton Steel Frame Coordination

13 massive girders, each 100 feet long and weighing up to 92,000 pounds, required 16 months of planning and extensive coordination. BIM managed crane picks, clearances, and connection sequencing.

Dense MEP in a Maintenance Environment

EV charging infrastructure, HVAC, BMS controls, fire protection, and plumbing all had to be coordinated within ceiling zones also occupied by overhead cranes, vehicle lifts, and exhaust extraction systems.

Zero-Emission Charging Infrastructure

Routing high-voltage cable trays, bus ducts, and switchgear serving 150 bus positions alongside structural members and maintenance equipment required LOD 400 spatial precision.

Multi-Trade Congestion in Constrained Ceilings

BIM was the only reliable method to verify hanger space, installation sequence, and trade clearances across all disciplines within the same overhead zone.

Multi-Stakeholder Coordination

With multiple trade contractors, a centralized BIM environment was the only practical way to align decisions, track changes, and maintain a single source of truth across all teams.

Scope of Work

LOD 400 BIM Modeling (Architectural, Structural, and MEP)

Multi-discipline Clash Detection and Coordination

Shop Drawings for structural and MEP trades

Construction Documentation Support

BIM Model Maintenance through Autodesk Construction Cloud

Coordination Meeting Support

Visual Highlights

MEP

Electrical

Architectural - Structural

Video

1 +

Clashes Resolved Before Construction

1 %

Reduction in MEP-Related RFIs

Trade Disciplines Coordinated Simultaneously

Key Challenges

Historic Structure Tolerances

The 1906 masonry showed significant dimensional deviations from original drawings. Every structural connection was modeled against actual point cloud geometry rather than design intent dimensions.

Historic and New Construction Interface

Active historic renovation and new construction proceeded simultaneously in adjacent zones. BIM models had to define interface boundaries, manage phasing, and coordinate temporary facade protection works.

Remediation Zone Coordination

Underground contamination areas affected pile layout, foundation sequencing, and drainage routing. Models had to account for remediation boundaries that were not confirmed until environmental investigation was completed.

EV Charging Power Routing

High-voltage cable trays and bus ducts serving 150 charging positions had to maintain separation distances, clear all structural members, and reach every bus parking lane within an already congested overhead environment.

Our Project Execution Strategy

Field-First Sequencing

Installation sequence for each trade was mapped before LOD 400 modeling began. Access clearances, trade priority, and prefabrication requirements all drove spatial decisions during coordination.

System Corridor Planning

Primary distribution zones were defined early for electrical, mechanical, and plumbing systems. Each trade worked within defined corridors, reducing conflict density in the most congested ceiling areas.

Prefabrication Support

Pipe spools, duct assemblies, and cable tray sections were modeled at full LOD 400 fabrication geometry to support shop prefabrication, reducing field labor in high-congestion zones.

Multi-Trade Coordination & Stakeholder Meetings

Structured coordination meetings were held with all trades and the design team using live model walkthroughs in Autodesk Construction Cloud. Open clashes were reviewed, resolution decisions confirmed, and all actions logged and tracked to closure each cycle.

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+1 469 887 6400 (Ext 126)
info@marsbimsolutions.com