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The initial proposal for the eastern span involved the construction of substantial concrete columns to replace or supplement the existing supports. There would also be modifications to the lattice beams as are now complete for the western suspension spans. The original cost estimate for this refit was $200 million.
Because of this, the original bridge's sidewalks were removed to make way for a widened roadway. [18] All of these projects were completed in 1967, and also included the installation of a median barrier, replacement of the concrete deck, and other miscellaneous improvements. [15] In 1996, a project to reinforce the concrete piers began.
Close-up of granolithic sidewalk. Granolithic screed, also known as granolithic paving [1] and granolithic concrete, [2] is a type of construction material composed of cement and fine aggregate such as granite or other hard-wearing rock. [3] It is generally used as flooring, or as paving (such as for sidewalks).
A pram ramp with tactile paving that connects a sidewalk to a road. A curb cut , curb ramp, depressed curb, dropped kerb , pram ramp, or kerb ramp is a solid (usually concrete) ramp graded down from the top surface of a sidewalk to the surface of an adjoining street. It is designed primarily for pedestrian usage and commonly found in urban ...
In June 1991, the NYCDOT began a $2.9 million project to rebuild the concrete surface of the bridge and to replace its steel girders and deck beams. The project was scheduled to be completed in 15 months. Due to construction, sidewalks were narrowed, parking was abolished, and traffic was slowed with the roadway narrowed to two lanes.
Permeable interlocking concrete pavements are concrete units with open, permeable spaces between the units. [ 28 ] : 2 More recently manufacturers have introduced styles with smaller joint allowing for better ADA compliance and still capturing a significant amount of stormwater.
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