Category Archives: Primary

Roads & Bridges, Special Deck Makes History on Liberty Bridge in Pennsylvania

Over 170,000 square feet of deck surface was replaced in an accelerated bridge construction (ABC construction) project highlighting Pennsylvania’s first use of an Exodermic deck.  Modular steel bridge deck panels were installed by both cast-in-place and precast methods.

Designers at HDR in Pittsburgh took advantage of the lightweight features of the Exodermic deck instrumental to remove the bridge from the states structurally deficient list.

“We selected Exodermic deck panel construction for this project due to its high strength to weight ratio and suitability for modular precast construction.  Accelerated construction using precast units on the north end of the bridge prevented significant weekday traffic impacts,” states Nick Burdette, P.E., of HDR.

The entire article can be found on the Roads & Bridges website by clicking here.

BGFMA Gridline #17

View Gridline Newsletter #17 on the BGFMA website by clicking the link below and opening the newsletter http://bgfma.org/news.htm

Featured articles:

“Meet Darko Jurkovic, P.E.” continues the introduction of BGFMA Certified Fabricator members whose many years of experience can be valuable to provide sound advice during plan preparation, fabrication, and installation.

“Getting into the Swing of It,” showcases the use of a lightweight Exodermic deck on the new Gasparilla Island Swing Bridge specified for its structural efficiency.

The results of the 2017 ASCE/AISC National Student Steel Bridge Competition are summarized.

“Grid Facts” presents in-service grid reinforced concrete decks that that have surpassed the current 75 year design life will most likely reach the 100 year bridge service life ultimate goal.

Roads & Bridges, Record-breaking bascule

A grid reinforced concrete deck was an integral component for this design achieving the status as the heaviest bascule span in the world and the second largest by deck area.  Check out the April 2017 edition of Roads & Bridges magazine Case Study in which the Fort Street (M-85) bascule bridge over the Rouge River is highlighted.

http://editiondigital.net/publication/?i=397975#{%22issue_id%22:397975,%22page%22:48}

 

Roads & Bridges, Re-Decking of the New York Expressway/Dyer Avenue …

All roadway and bridge construction or rehabilitation performed within New York City has the potential to create a traffic gridlock nightmare.  This is especially true when the work being performed is in very close proximity to a major arterial route linking Manhattan to an adjacent Borough or the neighboring State of New Jersey.  Such is the case when the bridge deck on the New York Expressway/Dyer Avenue needed to be replaced.

Due to the strategic importance of the structure, full closure to perform the work was not an option and due to the narrow width, neither was staged construction.  The PANYNJ permitted weeknight closures between 10 PM and 5 AM the following morning to remove and replace the nearly 20,000 square feet of bridge deck.

The entire article can be found on the Roads & Bridges website by clicking here.