ESWP: International Bridge Conference®: Historic

Historic

Wednesday, June 4, 2008
1:30PM to 3:45PM

Chair: James Dwyer, STV, Inc., Pittsburgh, PA

IBC 08-85 - Rehabilitation of the Haverhill-Bath Covered Bridge - Construction Phase
Sean James, Hoyle, Tanner & Associates, Inc., Manchester, NH

The Haverhill-Bath Covered Bridge, the second oldest covered bridge in the US, is undergoing a much needed rehabilitation. This paper will focus on the construction of the project, including bidding such specialized work, funding vehicles, temporary shoring and unique construction challenges faced by the design team and contractor.

IBC 08-86 - London Bridge Did Not Fall Down But Some Bridges Do - Part 2
Charles Seim, Consulting Bridge Engineer, El Cerrito, CA

This Part 2 to, "Did London Bridge Fall Down?" (presented during the 2007 IBC), continues the discussion of bridges that collapsed and bridges that failed to meet a level of performance or someone's expectation. The paper will also present examples, not to place blame, but to learn how and why events controlled by well meaning professional can quickly go wrong.

IBC 08-87 - Climbing Inspection and Analysis of Historic Long-Span Truss
C. Michael Cooper, PE, David A. Thurnherr, PE, Jeremy C. Miles, PE, Bergman Associates, Rochester, NY; Peter Melewski, PE , Bergmann Associates, Albany, NY; Elias Boumis, McLaren Engineering Group, West Nyack, NY

The 6,768-foot long Poughkeepsie-Highland Railroad Bridge is proposed for re-use as an iconic State Park that will be the world's longest pedestrian bridge. An in-depth structural inspection consisting of industrial rope access climbing techniques and diving formed the basis of a subsequent structural analysis, including 3D modeling of the seven cantilevered deck truss spans over the Hudson River.

IBC 08-88 - Rehabilitation of the 19th Century King's Covered Bridge
Samer Petro, Gannett Fleming, Morgantown, WV

This paper describes the construction of the rehabilitation of the King's covered bridge. Our approach involved extending the arches to bear directly on the stone abutments; and using traditional 19th century timber joinery methods such as joggle joints to replace deteriorated members. In addition, epoxy adhesives and Glass Fiber Reinforced Polymer (GFRP) rebars and plates were used as splices and joints. The rehabilitation methods and techniques are conducted in accordance with the Secretary of the Interior Standards for Historic Preservation. Rehabilitation is underway and expected to be completed by December 2007.

IBC 08-89 - Repair and Strengthening of 1906 Railroad Truss Bridge
Neil T. Greenlee, PE, HSMM, Inc., Raleigh, NC; Jonathan E. Hocker, PE, Norfolk Southern Corporation, Atlanta, GA

Fabricated in 1906, Norfolk Southern Bridge Wv-184.58 consists of two 102 foot Pratt truss spans and one 206 foot hump-back Warren truss span. HSMM designed a replacement floor system and truss bottom chord repair details to mitigate severe corrosion problems and increase the live load capacity of the truss spans.

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