The width of the bridge is 71 feet between curbs. The navigation channel has a minimum horizontal clearance of feet and a vertical clearance of feet. The minimum clearance between pier protection islands is 1, feet. Supported by stay cables, the main span is anchored into twin pylons rising feet above the surface of the river.
Approach spans measure feet in length and are comprised of precast concrete post-tensioned girders with conventional cast-in-place decks. The span layout successfully addressed the concerns posed regarding hazards to navigation with the existing lift span.
The four-lane superstructure of the bridge consists of an inch-thick concrete slab supported by a 5 x 4. When working at such high elevations, cranes become an important tool. Morrow Equipment Co. Moody out of Jacksonville, FL, were used for construction.
A few hydraulic cranes were used for material handling. These machines were used for construction support and construction of the columns and the moving of form work and pre-tied reinforced steel.
Seaboard Construction, a subcontractor hired to handle the roadwork and paving work on the approaches and at the Jekyll Island interchange, had several graders, earthmovers and pavers on site.
The crews also used two barge-mounted American ringer cranes to set in place two spans of roadway that run into the mainspan on both sides of the bridge. These ft. The bridge is in its final stages. Final adjustments are being made to the cables and the roadwork is being completed. The U. The Department of Natural Resources and the Georgia Ports Authority also have been involved in the construction process. The old bridge will be removed, however, a ft.
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Copyright The 7,foot Sidney Laner Bridge was built in It's widge is It crosses the South Brunswick River. It carries automobile traffic at U.
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