SERVICES: Engineer of Record (EOR) Structural design Post-tensioning Wood Framing

15 CHESTNUT ST.

Location: Norwalk, CT Industry: Mixed-Use | Residential

15 Chestnut Street is a 385,000 GSF mixed-use, transit-oriented development located in the heart of South Norwalk, Connecticut. Developed as part of the city's ongoing downtown revitalization efforts, the seven-story project features 200 multifamily residential units, including 19 affordable housing units, above a post-tensioned concrete podium with ground-floor retail, restaurant, and amenity spaces. Located adjacent to the South Norwalk Train Station, the development also includes a 295-space structured parking garage, with dedicated commuter parking to support the surrounding transit network and enhance walkability within the district.

Project Overview

Developer: SONO TOD II & Spinnaker
Architect: Beinfield Architecture
General Contractor: Spinnaker
Project completion: 2027
Project type: New Construction
Industry: Mixed-Use | Residential
Location: Norwalk, CT
Area: 305,000 GSF

Work With Us

KLINE serves as the Structural Engineer of Record (EOR), providing complete structural engineering services for the entire development. The project combines cast-in-place post-tensioned concrete construction for the podium and parking levels with wood-framed residential construction above, creating an efficient and economical hybrid structural system.

KLINE's scope includes the design of foundations, retaining walls, slab-on-grade systems, post-tensioned podium and parking structures, wood framing, concrete stairs and elevator cores, roof framing, a Level 3 courtyard pool structure, and the complete gravity and lateral force-resisting systems.

The project highlights KLINE's expertise in integrating multiple structural systems within a large-scale urban mixed-use development while supporting architectural flexibility, construction efficiency, and long-term durability.

Tags: •PT Concrete podium, •Wood-framed, •EOR, •Mixed-use.