New joints for New York landmark

New York City’s iconic Queensboro Bridge has had its expansion joints replaced by TENSA®MODULAR expansion joints – most featuring pre-integrated bridge deck panels.

Designing and manufacturing high-quality modular expansion joints to stringent standards always requires skill, experience and great attention to detail, but when one of New York’s most famous – and busiest – bridges needed a unique solution to be developed to overcome the challenges of replacing its existing joints, then a special kind of competence was demanded. Fortunately, mageba’s team in New York has extensive experience in overcoming such challenges for New York landmarks such as the Verrazzano Narrows Bridge, the Tappan Zee Bridge, the Bayonne Bridge and the George Washington Bridge.

The Queensboro Bridge has connected the New York City boroughs of Manhattan and Queens across the East River since 1909. When the bridge required its expansion joints to be replaced, mageba was selected to design and fabricate the joints and supervise their installation. Fourteen TENSA®MODULAR expansion joints with up to eight movement gaps were needed – and the ten joints of the main steelwork structure had to be supplied with pre-integrated bridge deck panels.

Thanks to the mageba team’s close collaboration with the client’s engineers, a solution was developed that minimized impacts on the bridge and on traffic during the expansion joints’ recent installation – and the Queensboro Bridge joins the impressive list of New York landmarks that rely on mageba key components every day. 

Client’s engineer: Thornton Tomasetti inc.
Owner: New York City Department of Transportation
Contractor: American Bridge Company

The Queensboro Bridge crosses the East River in New York City, connecting Manhattan and Queens

First, three-gap TENSA®MODULAR expansion joints were designed and supplied for the Queensboro Bridge’s approach structures

Far less standard was the challenge presented by the design, fabrication and installation of the
TENSA®MODULAR joints required for the main structure, with their design integrating the connecting bridge deck panels on each side

Design representation (end of joint, view from beneath) of one three-gap TENSA®MODULAR expansion joint with pre-integrated connecting bridge deck panels

Preparation of a fully fabricated TENSA®MODULAR expansion joint with pre-integrated connecting bridge deck panels for transport to site

The expansion joint replacement work had to take place on one of New York City’s busiest transportation structures

Use of a specially designed transportation frame to lift an expansion joint into place in the very limited space conditions on the Queensboro Bridge

Installation of an especially wide construction with two three-gap joints separated and flanked by steel deck panels

An eight-gap TENSA®MODULAR expansion joint with integrated deck panels following completion of installation on the Queensboro Bridge