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The CSX Bellwood Subdivision James River Bridge is a plate girder bridge that carries the Bellwood Subdivision over the James River in Richmond, Virginia. [1] The bridge was built by the Seaboard Air Line Railroad between 1897 and 1900. The bridge begins just south of the Main Street Station and constitutes the middle part of the Triple ...
The cast-in-place cantilever box girder bridge design is the only one of its kind in Virginia. The bridge is hollow. Beneath the riding surface, the box girders are open with a width of 18 feet (5 m) and a height which varies from 12 feet (4 m) to 35 feet (11 m). Power and communication lines are carried in the hollow concrete box and run the ...
Underslung (lower-beam) launching gantry used for Skyline guideway construction (2015). A launching gantry (also called bridge building crane, and bridge-building machine) is a special-purpose mobile gantry crane used in bridge construction, specifically segmental bridges that use precast box girder bridge segments or precast girders in highway and high-speed rail bridge construction projects.
Once several bridge piers are complete, support brackets are attached to adjacent piers and the main parallel girders of the MSS are lifted in place to support the scaffold and concrete forms. Jacks are used to raise the girders and forms and the concrete is poured for the segment (or span) after rebar is placed. After the concrete has cured ...
Colonial Parkway, U.S. Route 17 Bridge Extant Reinforced concrete cast-in-place slab 1995 Colonial Parkway: US 17: Yorktown: York: VA-48-S: Colonial Parkway, Virginia Route 238 Bridge Extant Reinforced concrete closed-spandrel arch: 1995
Concrete bridges —bridges constructed primarily of concrete, including reinforced concrete and prestressed concrete The main article for this category is Concrete bridge . Subcategories
A girder may be made of concrete or steel. Many shorter bridges, especially in rural areas where they may be exposed to water overtopping and corrosion, utilize concrete box girder. The term "girder" is typically used to refer to a steel beam. In a beam or girder bridge, the beams themselves are the primary support for the deck, and are ...
The bridge deck was supported by thirteen concrete girders, each spanning 160 feet (49 m). These girders were prestressed by post-tensioning four wire cables embedded in the concrete. Although this type of construction had been used in Europe for quite some time, the Walnut Lane Memorial Bridge was innovative in the United States and led to the ...