My name is Michael Miguel. I have been in the construc-
Hathaway Bridge Project Details
By admin | August 24, 2007
What is considered the “NEW” The Hathaway Bridge was completed in Spring of 2006. It is a one mile span over North Bay and connects Panama City and Panama City Beach. U.S. Highway 98 uses the Hathaway Bridge as it traverses across north Florida.
Project Details: This project involved designing and building services for the replacement of the four-lane Hathaway Bridge over the St.Andrews Bay intra-coastal waterway in Panama City, FL. The twin concrete segmental, post-tensioned, single cell box girder bridges measure 3,800 linear feet and 3,350 linear feet, respectively, each 80-feet wide.
Bridge segments were produced at the project’s segmental precast yard and erected utilizing the balanced cantilever method. The main span of the bridge is aproximately 330 feet with 65-foot clearance over the waterway. The bridges are being equipped with an Intelligent Transportation System (ITS) to continuously monitor and manage traffic. Aesthetic lighting will illuminate the structures from below, while a separate system will light the bridge decks from above. The project also entailed realignment of approach roadways and the removal of the old Hathaway Bridge.
(source quoted from Granites Information)
- 22 each indicator pile, 90 - 120 feet60″ cylinder pile with PDAmonitoring
- 198 each production pile, 90 - 120feet 60″ cylinder pile
- 14,175 cubic yards concrete footers- Class IV mass concrete
- 4,052 cubic yards cast-in-placesub-structure - Class IV massconcrete
- 22 each 150 ton precast seals
- 518 each precast segments(weighing up to 200 tons each)(45,233 cu yds) - Class IV concrete
- 10,900,000 pounds reinforcing steel
- 56 each pot bearings up to 6,000kips
While working for Granite Construction I supervised a crew of approximately 15 to 20 workers. My involvement in the project entailed the construction of an elevated structural slab which was mounted directly on 16, 24″ piles. An elevated structural slab is basically forming and pouring monolithic girders and slab at the same time.
I had to come up with a method of forming to pour all at once, as well as figuring the falsework into the equation.
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