East River Bridge Research Articles

Rehabilitation of the Brooklyn Bridge

The Brooklyn Bridge is the oldest of New York City’s East River bridges, having been opened to traffic in May 1883. The bridge was designated a Historic Landmark in 1967. It is a combination suspension and cable stayed bridge with a main span of 486.3 m and two equal side spans of 283.5 m. In 1979, the New York State Department of Transportation ordered an in-depth inspection of the entire bridge in order to set rehabilitation priorities for the bridge for the next 100 years. This paper presents work completed in 1991 under Contract No. 4, consisting mainly of the replacement of wire rope and solid rod suspenders, cable posts, stays, main cable wire wrapping, and the adjustment of suspenders.

Meeting Issues of Preventive Maintenance for New York City Bridges

During 1988–1989, a consortium of civil engineering departments of New York City colleges and universities administered by the Center for Infrastructure Studies at Columbia University undertook the development of a preventive maintenance management system for the Department of Transportation in the City of New York. The participating schools were: Columbia University, City College, Cooper Union, Polytechnic University, and Pratt Institute. The system that was developed covered a total of 1,426 bridges. The system concentrates on those bridges in “good” or “very good” condition although it makes it clear that preventive maintenance must also be performed on “fair” and “poor” bridges until a steady state is reached. The study established the requirements to protect the bridges through dirt and water control, steel protection, roadway surface maintenance, maintaining mechanical and electrical components on moveable bridges, and performing special requirements on the East River bridges. A computer system for ...

Highlights of the East River Bridge Rehabilitation Program

Annals of the New York Academy of SciencesVolume 431, Issue 1 p. 308-315 Highlights of the East River Bridge Rehabilitation Program GEORGE ZAIMES, GEORGE ZAIMES Office of the Director of Engineering Department of Transportation The Stare of New York Two World Trade Center, Room 5454 New York, New York 10047Search for more papers by this author GEORGE ZAIMES, GEORGE ZAIMES Office of the Director of Engineering Department of Transportation The Stare of New York Two World Trade Center, Room 5454 New York, New York 10047Search for more papers by this author First published: December 1984 https://doi.org/10.1111/j.1749-6632.1984.tb27055.xAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Volume431, Issue1Infrastructure: Maintenance and Repair of Public WorksDecember 1984Pages 308-315 RelatedInformation

Origin of the channels surrounding Manhattan island, New York

Introduction The engineering work recently completed and that now undertaken in and about the city of New York make it easily the focus for such enterprises on the planet—enterprises the cost of which must be estimated in the hundreds of millions. To mention but a few, there are the subway and the tunnels of the Rapid Transit railway, the East River bridges numbers 2, 3, and 4, the proposed tunnels of the Pennsylvania Railroad Company from Weehawken to Long Island City beneath the two rivers and Manhattan island, the completion of the old Hudson River tunnel from Jersey City to New York, and the dredging of the Buttermilk and Ambrose channels and of the Man-o’-War and Diamond reefs by the United States government. These are some of the larger of the recent enterprises. Of earlier ones, the government work in making the channel of Hell Gate by removing Flood and . . .

The Footbridge for Building the Cables of the New East River Bridge

The erection of one suspension bridge from which to build the cables of another has introduced new ideas and instituted a new procedure in the methods of constructing bridges of this type. The cables of the New East River Bridge No. 2, also designated as “The Williamsburg Bridge,” are novel in other respects. They are the largest suspension bridge cables ever attempted, and are suspended from towers taller than those in use in any other bridge. These towers are also distinguished by being the first large ones of steel to be used for this purpose.

The Cable Railway on the New York and Brooklyn Bridge

lst.—The New York and Brooklyn Bridge, more commonly known as the East River Bridge, is the suspension bridge which spans the East River and connects the cities of New York and Brooklyn. The struct...

Progress of Work at the East River Bridge

The work on the designs for the approaches to the East River Bridge was begun about January 1st, 1877. The Brooklyn approach has a length of 900 feet on the centre line. and starts from the street grade at Sands street, rising feet per 100 to the rear of the Brooklyn anchorage, where it has a height of about 60 feet above ground. It is crossed by several streets at high angles, and has one curve at about 200 feet from Sands street. The width throughout is to be 100 feet.

Notes on the Masonry of the East River Bridge

Having spent considerable time during the past winter in getting together the details of the masonry and attachments of the East River bridge, so far as completed, and in revising the estimates of ...

Further Notes on the Caissons of the East River Bridge

A paper read before this Society at the last annual Convention, entitled “A Few Facts about the Caissons of the East River· Bridge,”* gives account of the construction and sinking of the Brooklyn c...

The Foundations for the Brooklyn Anchorage of the East River Bridge

The front face of the Brooklyn anchorage of the East River Bridge is 930 feet from the centre of the tower. The base at the front and for 85 feet 6 inches back, has a width of 109 feet 4 inches. At...

East River Bridge

The cornea is the most sensitive structure in the human body. Corneal nerves adapt to maintain transparency and contribute to corneal health by mediating tear secretion and protective reflexes and provide trophic support to epithelial and stromal cells. The nerves destined for the cornea travel from the trigeminal ganglion in a complex and coordinated manner to terminate between and within corneal epithelial cells with which they are intricately integrated in a relationship of mutual support involving neurotrophins and neuromediators. The nerve terminals/receptors carry sensory impulses generated by mechanical, pain, cold and chemical stimuli. Modern imaging modalities have revealed a range of structural abnormalities such as attrition of nerves in neurotrophic keratopathy and post-penetrating keratoplasty; hyper-regeneration in keratoconus; decrease of sub-basal plexus with increased stromal nerves in bullous keratopathy and changes such as thickening, tortuosity, coiling and looping in a host of conditions including post corneal surgery. Functionally, symptoms of hyperaesthesia, pain, hypoaesthesia and anaesthesia dominate. Morphology and function do not always correlate. Symptoms can dominate in the absence of any visible nerve pathology and vice-versa. Sensory and trophic functions too can be dissociated with pre-ganglionic lesions causing sensory loss despite preservation of the sub-basal nerve plexus and minimal neurotrophic keratopathy. Structural and/or functional nerve anomalies can be induced by corneal pathology and conversely, nerve pathology can drive inflammation and corneal pathology. Improvements in accuracy of assessing sensory function and imaging nerves in vivo will reveal more information on the cause and effect relationship between corneal nerves and corneal diseases.

A Few Facts about the Caissons of the East River Bridge

A Few Facts about the Caissons of the East River Bridge