When reconstructing a three-mile segment of Glenn Highway in Eagle Creek, Alaska, engineers had to consider two types of travelers: human drivers and spawning fish.
While replacing the existing 15-ft-long concrete slab bridge for this $7.2-million project, the team faced challenges that included compressible soils and tidal conditions. Because a sealed cofferdam was not employed, all work was conducted during 8-ft tidal cycles.
Reconstructing a busy roadway is tough under any circumstances. But undertaking such a major project at Logan International Airport, where hundreds of thousands of passengers arrive and depart each week in cars and buses, presented a host of challenges.
Revamping the pedestrian connection between Brooklyn Heights Promenade and Brooklyn Bridge Park’s Pier 1 began with the removal of the existing wood and steel structure, situated between ten- and six-story buildings above a below-grade parking facility and extending into an active park.
The 60-year-old bridge spanning the Minnesota River has been replaced with a twin-structure crossing that provides long-needed added traffic capacity while also eliminating flooding issues at the approaches.
Chicago’s Lakefront Trail Pedestrian Bridge incorporates architectural steel railings and panels, custom steel deck nosing and a LED lighting system to improve visibility.
On Nov. 11, 2020, a trucking accident on the Brent Spence Bridge—a key thoroughfare between Covington, Ky., and Cincinnati—caused a fire that damaged the double-decker cantilevered truss bridge’s upper deck floor system steel, drainage, deck, barriers, electrical components and the lower deck’s overlay.
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