August/September 2017 August/September 2017 - Page 12

ASCE-NH/SENH SEPTEMBER MEETING ANNOUNCEMENT PRESENTATION: Design and Construction of Sarah Mildred Long Bridge Wednesday, September 27, 2017 The new Sarah Mildred Long Bridge replaces the existing structure that was completed in 1940. The original bridge for many years was known as the Maine-New Hampshire Bridge. In 1987 the bridge was renamed to honor Sarah Mildred Long, an employee of the Maine- New Hampshire Interstate Bridge Authority for 50 years. The honor was retained for the new structure. The new bridge consists of 200’ tall precast concrete towers that will support a 300’ long steel box girder lift span. With a large 56’ vertical clearance in its mid-level resting position there will be 68% fewer bridge lifts. Its lower position will allow the passage of railroad traffic, while its upper position will allow the passage of tall ships. The approach structures are precast segmental concrete box girders built in balanced cantilever. The roadway spans are 320’ long, while the railroad spans are 160’ long. The presentation will provide an overview of design and construction of the bridge. Particular focus will cover the unique engineering aspects of the project including main bridge foundations, precast concrete towers, lift mechanics, and the precast concrete approach superstructures. SPEAKERS: Chris Burgess, P.E., S.E., P.Eng. is a Principal Bridge Engineer with Figg Bridge Engineers (FIGG) for over 26 years. Chris is the Lead Design Engineer of the approach structures and is providing technical support and construction quality review for this fast track, high profile concrete segmental bridge. Chris received both his Bachelor and Masters of Sciences Degrees in Structural Engineering from the University of Colorado. He is a registered Professional Engineer in 24 states, a registered Structural Engineer in 6 states, and a registered Canadian Professional Engineer in British Columbia. Peter Roody, P.E. has been with Hardesty & Hanover since 1982. As Chief Engineer of Bridges and Movable Structures, he is responsible for project management, structural designs, investigations, and construction support services for major engineering projects. A multi-national project manager and lead engineer, Mr. Roody’s experience includes fixed and movable bridge projects and special structures including travelers, cranes, movable roofs and various heavy movable structures. For 35 years at H&H, Peter has lead multi-disciplined projects that involved structural, mechanical, electrical, traffic, environmental and construction disciplines. PLACE: Sheraton Portsmouth Harborside Hotel, 250 Market St. Portsmouth, NH AGENDA: 5:30 pm – 6:30 pm Registration/Social Hour/Cash Bar 6:30 pm – 7:15 pm Dinner 7:15 pm – 7:30 pm Business Meeting 7:30 pm – 8:30 pm Presentation DINNER: Buffet with choice of Herb Roasted Sliced Sirloin with cabernet mushroom demi-glace, Seared Fresh North Atlantic Salmon with lemon herb viniagrette. COST: ASCE/SENH Member/Non-Member: $65.00 Full Time Student: $20.00 - ‘no-shows’ will be billed at full amount.