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/297030
The Route 52 Visitors Center Bridge (VCB) on Garrets Island had to provide an inviting and welcoming appearance to all stopping by the newly constructed Ocean City's Visitors Center. This bridge was part of a larger $400 million project replacing the Route 52 Causeway bridges and the roadway section between Somers Point and Ocean City, N.J. Overall, this is one of the New Jersey Department of Transportation's (NJDOT's) largest projects and is a critical link because of its designation as the emergency evacuation route for Ocean City. The VCB was designed to replace an existing bridge at the newly constructed visitors center. Early in the bridge study, it was determined that aesthetics were going to play a significant role in the selection of the bridge type. In the end, two alternates were suggested for this bridge, a horizontally curved, steel plate girder and curved post- tensioned concrete spline bridge. After seeking input from the community, the curved, post-tensioned concrete spline bridge was selected. One of the more aesthetically pleasing details of the bridge are the large wings that extend over 20 ft from both sides of the bridge. Superstructure Details Measuring just under 400 ft in length, VCB consists of four spans (92, 107, 107, and 92 ft) constructed on a 449 ft radius with a 2% vertical grade in s u p e r e l e v a t i o n . T h e c o n n e c t i o n between the superstructure and three intermediate piers is integral with bearings and expansion joints used only at the two abutments. VCB's superstructure is 70 ft wide with a sidewalk on each side leaving a width of 50 ft for vehicular traffic. The superstructure is 4 ft 6 in. deep. Considering the minimal depth and solid nature of this structure, post-tensioning was selected as the main reinforcing system for the superstructure. The VCB superstructure contains 17 longitudinal tendons, each with twenty-seven profile ROUTE 52 VISITORS CENTER BRIDGE / OCEAN CITy, NEW JERSEy BRIDGE DESIGn EnGInEER: Michael Baker Jr. Inc., Hamilton, N.J. PRIME ConTRACToR: Route 52 Constructors: A Joint Venture of G.A. & F.C. Wagman Inc. and R.E. Pierson Construction Co. Inc., york, Pa. ConCRETE SuPPlIER: Clayton Concrete, Block and Sand, Lakewood, N.J. PRECASTER: Precast concrete piles by Bayshore Concrete Products Corp., Cape Charles, Va., a PCI-certified producer PoST-TEnSIonInG ConTRACToR: DyWIDAG-Systems International USA Inc., Toughkenamon, Pa. by Joseph J. Romano, Michael Baker Jr. Inc.; Joseph E. Salvadori, DYWIDAG-Systems International USA Inc.; and Daniel P. Zeller, Route 52 Constructors Welcome to Ocean City, Via Route 52 Visitors Center Bridge C u r v e d , p o s t - t e n s i o n e d , s p l i n e b r i d g e w e l c o m e s v i s i t o r s A view of the new Route 52 Visitors Center Bridge. Photo: Route 52 Constructors. 16 | ASPIRE , Summer 2012 P R O J E C T ASPIREBook_Sum12_R02.indb 16 6/29/12 12:38 PM