My name is Michael Miguel. I have been in the construc-
Archive for August, 2007
« Previous EntriesHathaway Bridge Project Details
Friday, August 24th, 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.
Hollywood Bascule Bridge Rehabilitation
Thursday, August 23rd, 2007
The location of this project is Hollywood, Florida. The Hollywood Boulevard bridge consists of three structures, including a hydraulically operated double leaf hopkins trunnion type casule span. There are a total of two bascule leaves and two sets of associated operating machinery. All three structures were rehabilitated. The project also included architectural improvements to the control house, a new gate house and a decorative balustrade.
Project Details: This project included the restoration of the bridge hydraulics system, the replacement of bridge electrical controls, building of a new architectural control house, refurbishment and upgrades to the existing control house, architectural concrete work to the approach barriers, railing and sidewalks, bascule steel rehabilitation.
I was the Superintendent, my crew and I constructed the gatehouse overanging the bascule pier. It took quite a bit of preparations from cutting out the existing pier wall, to core 58 holes 96′ deep to eroxy #10 rebar in order to pour the supporting brackets for the gatehouse, then forming and pouring the rest of the 3 story structure topping it off with a cast in place, octagon shape wall for top of structure.
We also rehabilitated about 80% of existing bridge from new Minnesota Rail, to new bascule machinery.
Tri County Rail Seg
Thursday, August 23rd, 2007
This job was awarded by Tri-County Commuter Rail Authority to Tri-County Rail Constructors which was a joint venture of Granite Construction, Washington Group International and Herzog Contracting Corp for reconstruction of a commuter rail line in south Florida. Scope of work included upgrading from single lane track to double track on an existing commuter rail line for a total of 46 miles from Palm Beach County, through Broward County and into Dade County along the southeastern Florida coast.
Work included a total of 26 bridges, new, replacements and rehabilitations; build new stations in Boca Raton at Congress Avenue and Glades Road and remodel nine other stations; and 72 road crossings and signals.
Work Details:
- 1 million cubic yards excavation and fill
- 350,000 tons railroad stone ballast
- 42 major railroad switches
- 13 miles siding track removed and relocated
- 46.6 miles of rail line
- 26 bridges (12 new, 6 replace, 8 rehabilitation)
- 10 stations (1 new, 9 modifications)
- 72 road crossings and signals.
My responsibilities at this joint venture included supervising work crews. Erected the trirail train stations from ground preparations, footings, retaining walls, to the actual erection of the precast panels.
What made the erection somewhat challenging was that there were 26 precast pieces per tower and no two were alike. There are two towers per station and we completed six stations.
Mathews Bridge Deck Replacement Project
Thursday, August 23rd, 2007
The Mathews Bridge was originally completed in April of 1953, the cantilever steel truss Mathews Bridge spans the St. Johns River and today brings more than 66,000 vehicles a day in and out of downtown Jacksonville along the Arlington Expressway. It was named after John E. Mathews, a Florida state legislator from the area and Chief Justice of the 1955 Florida Supreme Court. Justice Mathews was instrumental in making the bridge’s construction a reality.
Project Information: This 12.9 million dollar project, began on or about mid January, 2007. Project is being carried out by PCL Construction, and will replace the existing open grate bridge deck currently on Mathews Bridge with an “Exodermic Deck” resulting in a concrete riding surface.
An “exodermic deck system” is a steel grid filled in with lightweight concrete. This system has been successfully installed on several bridges including structures in Fort Lauderdale, West Palm Beach and the Tappan-Zee Bridge in New York which is similar to the Mathews Bridge. It has also been used on several other bridges in the United States . Supports beneath and above the riding surface will be replaced and strengthened to help provide a smoother ride across the bridge. The end result will be a solid riding surface across the entire 7,375 foot long bridge.
The Federal Department Of Transportation gave my crew among others, 90 days to complete a particular phase of the project. We replaced approximately 1600 lineal feet of grating by four lanes wide including median, with concrete.
It was a matter of removing existing grating, stingers, curb, median, and guardian rail and replaced with all new. Except the grating, that was replaced with lightweight solid concrete deck. This phase of the project was actually completed in 76 days, few days earlier than the deadline. We were all very please about it.
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