Commuters woke up one morning and discovered a new Third Avenue Bridge. To minimize disruption to the flow of 72,000 vehicles that use it daily, Hardesty & Hanover, LLP Engineering fabricated the 3,500 square foot reconstruction, which included ramps, approach spans, and swing spans, off-site in Alabama in six phases and later barged it 1,800 miles to New York. Owner: NYC Department of Transportation New York, NY Architect/Engineer: B. Thayer Associates New York, NY Structural Engineers: Hardesty & Hanover, LLP New York, NY General Contractor: KiSKA Construction Corp. New York, NY Structural Steel Erector: KiSKA Construction Corp. New York, NY

The paradoxical architecture of the 630,000-square-foot Museum of Modern Art (MoMA) is so striking and well-executed, it disappears, and that’s exactly what architect Yoshio Taniguchi intended. The grand lobby, atrium space, and surfaces throughout the interior achieve a flatness and transparency with 20 different types of curtain wall to keep visitors focused solely on the artwork. Owner: Museum of Modern Art New York, NY Architect: Taniguchi and Associates Tokyo, JP Executive Architect: Kohn Pedersen Fox Associates New York, NY Structural Engineers: Severud Associates New York, NY; Guy Nordenson and Associates New York, NY General Contractor: AMEC New York, NY Curtain Wall Consultant: R.A. Heintges Associates New York, NY Curtain Wall Fabricators: Josef Gartner Germany Gundelfingen, DE; Permasteelisa Windsor, CT Curtain Wall Erector: Tower Installation LLC Windsor, CT Miscellaneous Ornamental Metal Fabricator and Erector: Allied Bronze LLC Long Island City, NY Miscellaneous Iron Fabricators and Erectors: Empire City Iron Works Long Island City, NY; Ment Bros. I.W. Co. Inc. New York, NY

This 40-story, 1.2 million-square-foot skyscraper was already under construction when the events of September 11 forced architects to rethink the design. Its revisions included an imaginative curtain wall façade of stainless-steel spandrel panels and fins to meet post-9/11 security requirements and a structural steel core. Owner: Brookfield Properties Corporation New York, NY Architect: Skidmore, Owings & Merrill LLP New York, NY Engineer: Gilsanz, Murray, Steficek LLP New York, NY General Contractor: Turner Construction New York, NY Structural Steel Fabricator: Canron Corp. New York, NY Structural Steel Erectors: Cornell and Company Woodbury, NJ; Canron Corp. New York, NY Miscellaneous Steel Fabricators and Erectors: Empire City Iron Works Long Island City, NY; Post Road Iron Works Greenwich, CT Metal Deck Erector: Solera Construction, Inc. New York, NY

The building has a modern structural steel frame and a unique terra-cotta, glass, and aluminum curtain wall, which helps the building harmonize with its neighbors while meeting contemporary office and retail needs.

American Airlines’ new 2.2.-million-square-foot terminal complex called for an average of 200 shop drawings a week. Now the largest terminal at JFK International Airport, it features a dramatic roof structure of exposed long-span, tri-chord steel trusses that climb to a height of 90 feet. Owner: American Airlines Corporation Real Estate Fort Worth, TX Developer: Port Authority of NY&NJ New York, NY Architect: DMJM+Harris New York, NY Engineer: Severud Associates Consulting Engineers, PC New York, NY General Contractor: VRH/Torcon, a joint venture Jamaica, NY Structural Steel Fabricator: (Concourse C) ADF Steel Corp. New York, NY; Terre Bonne Quebec; (Main Building, Concourses A&B) Interstate Iron Works Whitehouse, NJ Structural Steel Erector: (Concourse C) DCM Erectors Inc. New York, NY; (Main Building, Concourses A&B) Metro Steel Construction Whitehouse, NJ Miscellaneous Fabricator and Erector: FMB, Inc. Harrison, NJ Metal Deck Erector: Solera/DCM Erectors Inc. New York, NY

JetBlue Technical Operations Campus Hanger Owner: JetBlue Airways New York, NY Architect: Hellmuth, Obata + Kassabaum New York, NY Engineer: Butler Heavy Structures Kansas City, MO General Contractor: Turner Construction Company New York, NY Structural Steel Erector: Midlantic Erectors, Inc. Roselle, NJ Metal Deck Erector: A.C. Associates Lyndhurst, NJ

Ornamental and Architectural Ironworker’s Training Facility Architect: Daniel Goldner Architects New York, NY <br/> Structural Engineer: Neil Wexler & Associates New York, NY<br/> General Contractor: Structure Tone, Inc. New York, NY<br/> Ornamental Metal Fabricator and Erector: United Iron Mt. Vernon, NY<br/> Architectural Metal Erector: Empire Architectural Metal and Glass Corp. College Point, NY<br/>

The Outboard Detour Roadway, a recyclable superstructure consisting of transverse steel-cap beam and longitudinal steel girders, is a unique solution to diverting traffic during the FDR Drive Reconstruction. A civil engineering and urban planning accomplishment, this innovative use of steel and pre-cast concrete slabs reduces the impact on traffic patterns as well as noise levels for nearby residences. Owner: New York State Department of Transportation Structural Engineering Consultants: Earth Tech, Inc. New York, NY Engineer-in-Charge: Tom Bowers, New York State Department of Transportation New York, NY General Contractor: Slattery Skanska/Weeks Marine Carteret, NJ Structural Steel Erector (roadway): Archer Steel Construction Co. Manalapan, NJ Structural Steel Erector (noise wall): Francis A. Lee, Inc. Hicksville, NY

Challenged by multiple structural systems and movement issues of a combined structure, 360 Madison’s high-performance glass curtain wall seamlessly merges classic with modern. Uniting the new 26-story concrete tower with the original 18-story steel framed building showcases construction innovation. Owner: Madison 45 LLC New York, NY Architect: Richard Cook & Associates Architects New York, NY Structural Engineer: Rosenwasser Grossman Consulting Engineers New York, NY General Contractor: Pavarini McGovern Construction Co. New York, NY Structural Steel Fabricator: ADF Steel Corp. (USA) Montreal, CA Structural Steel Erector: DCM Erectors, Inc. New York, NY Curtain Wall Fabricator: Permasteelisa Cladding Technologies, Ltd. Windsor, CT Curtain Wall Erector: Tower Installation LLC Windsor, CT Architectural Metalwork Erector: Airflex Industries Inc. Farmingdale, NY

Architect James Carpenter showed that steel guarantees safety – the Cable Net Wall at the entrance and lobby is blast resistant – without compromising aesthetics.