Secretary Buttigieg announces major interstate bridge investment that uses Hot-Dip Galvanized Rebar (HDG A-767 Class 1)
On April 13, 2023, U.S Transportation Secretary Pete Buttigieg announced $21 million in federal funds to help complete the restoration of the NYS Thruway Authority’s Castleton-on-Hudson Bridge. The 1-mile long 67-year-old bridge spans the Hudson River just south of Albany, NY. In the photo above, NYS Congressman Paul Tonko, Secretary Buttigieg and NYS Governor Kathy Hochul make the announcement.
In 2022, the entire two-lane westbound deck of the bridge was replaced using HDG A767 Class 1. In 2023, with help from the federal Bridge Investment Program, the eastbound deck will be replaced. The bridge was identified as one of the most economically significant bridges in the country requiring immediate attention.
Most federal, state and local Transportation and Public Works agencies are now mandating 75-100 year life out of their concrete reinforced structures with minimal repair. The Hot-Dip Galvanized Rebar Alliance is honored to play an important role in so many of our nation’s major infrastructure projects.
ALTMAY 23A.When it comes to material selection for projects requiring long design lives, more owners are turning to ASTM A767 Class 1 Hot-dipped galvanized rebar due to its proven durability during fabrication and installation and its 100 year design life due to the robust thickness of the galvanized coating.
ASTM A767 Class 1 Hot-dipped galvanized rebar is the proven performer.
“The thicker the COATING, THE LONGER IT PROVIDES CORROSION PROTECTION”
Not all galvanized rebar is created equal. Once the zinc surface begins to dissolve from chloride exposure, the thickness of the galvanized coating is the primary factor in determining the service life of the product. The thicker the coating, the longer it provides corrosion protection. Hot-dipped produces a galvanized coating typically three times (or more) as thick as Continuously Galvanized Rebar (CGR), a sole-sourced product developed in China in 2011 and brought to the American market in 2018.
ASTM A767 Class 1 Hot-dipped galvanized reinforcing steel has the lowest cost of ownership.
Hot-dipped galvanized steel rebar is a superior value to Black, Epoxy and Stainless Steel rebar. Source: HDG Alliance
“I think personally that galvanized rebar is the best solution.”
In this video, Oklahoma State University Professor Dr. Tyler Ley investigates many different types of reinforcing, including epoxy coated, black steel, galvanized and stainless steel. He suggests that galvanized rebar is the best.
“We’ve shown no signs of deterioration of the concrete where we’ve used galvanized rebar.”
The New York State Thruway Authority – which has specified Hot-dipped galvanized rebar for its bridges since 1995 - recently used 80 million pounds of ASTM A767 Class 1 Hot-dipped galvanized steel rebar to construct the iconic Governor Mario M. Cuomo Bridge across the Hudson River (shown above), a “bridge designed so that major maintenance would not be necessary for at least 100 years.”
Rhode Island DOT used ASTM A767 Class 1 for the construction of the Route 6/10 Interchange Project, the largest design-build project in the state’s history, and Connecticut DOT is now requiring ASTM A767 Class 1 in all its future bridge designs.
RI Department of Transportation’s US Route 1 / State Route 6 interchange project, Providence, RI
Photo credits: New York State Thruway Authority, except bottom Dimension Fabricators