ASPIRE is a quarterly magazine published by PCI in cooperation with the associations of the National Concrete Bridge Council. The editorial content focuses on the latest technology and key issues in the Concrete Bridge Industry.
Issue link: http://www.aspiremagazinebyengineers.com/i/306162
F O C U S Hardesty & Hanover enters its 125th year with innovative techniques for designing bridges that are more durable, faster to construct, and more aesthetically pleasing B r i d g e e n g i n e e r i n g h a s c h a n g e d drastically since Hardesty & Hanover opened its doors in 1887. Founder Dr. J. A. L. Waddell was a leader in reinforced concrete and steel bridge design and held the patent for the first modern vertical-lift bridge design and other movable-bridge innovations. The firm's work still includes many movable bridges, but expansion into other sectors has enabled its designers to implement new techniques and innovations. "We are experienced in all types of bridges, both fixed and movable," says Glen Schetelich, a partner in the New York-based engineering firm's Hoboken, N.J., office. The firm's engineers have focused primarily on mid- to short-span bridges, which have involved a range of challenges dealing with terrain, environmental concerns, owners' growing needs, and additional community input. "Our clients look to us because of the depth of service we provide," adds Keith Griesing, director of engineering. "Many companies are technically capable of creating bridges, but they aren't as attuned to the client's needs as we are. Our goal is to partner with our clients and understand their challenges so we can first deliver a service and ultimately create the best product for them. Our project managers stress communication and teamwork." Assessing Original Designs The firm's long history has allowed it to return to some of its original designs. "We have a long history of building durable structures," notes Tim Noles, a partner in the Sunrise, Fla., office. "Having the original plans for a project can be beneficial during rehabilitation work, because it gives us insight into the original intent. Frequently, the owners themselves no longer have copies of the plans." The firm has extensive history with rehabilitation, often analyzing bridges to determine if they can be preserved. "In some cases, we try to rehabilitate a bridge in kind, with improvements to meet current AASHTO criteria," Noles notes. "But often we replace a movable bridge with a new high-level, fixed bridge." That is happening more by Craig A. Shutt Celebrating the past, looking to the Future Completed in December 2009, the $125-million Route 36 Bridge over the Shrewsbury River in Sea Bright, N.J., replaced an existing bascule bridge with a high-level precast concrete segmental box girder design supported on precast, post-tensioned concrete piers. Hardesty & Hanover designed two pedestrian bridges for the project and provided engineering services, including concrete pier design and seismic analysis. All photos: Hardesty & Hanover. 8 | ASPIRE , Winter 2011 Book_Win11.indb 8 1/4/11 2:33 PM