• Corporate HQ, NY
  • Melville, NY
  • Iselin, NJ
  • Ossining, NY
  • Mount Laurel, NJ

Verrazano-Narrows Bridge Biennial Inspection

Brooklyn/Staten Island, New York<br style='line-height:2px'>MTA Bridges & Tunnels

HAKS performed the 2012-13 biennial and the 2013 Special Inspection of the Verrazano-Narrows Bridge Approach Ramps, including 11 bridge structures on the Brooklyn approach and two on the Staten Island approach. The project required two inspection teams each consisting of a team leader and an assistant team leader. Access was obtained by using bucket trucks, 80-foot and 120-foot manlifts, extension ladders and underbridge inspection vehicles. Due to significant traffic on both approaches during daytime hours, nighttime inspections were necessary.

A primary focus during the field inspections was the expansion bearings, which were present at eight of the structures. Approximately 30% of the bearings were found to be abnormally contracted when inspected during the summer months.

Twenty-four safety flags were issued during the inspection. Typical flagged conditions included delaminated concrete in deck undersides and pier cap beams, missing and/or loose mast-arm connection bolts and anchor bolts at various light standards. One yellow structural flag was issued for severe deterioration of the concrete on a pier column.

The inspection teams presented their findings in NYSDOT inspection reports, overall narrative report, paint condition report, hollow sounding and delaminated concrete report, and a steel and concrete vulnerability assessment report.