Similar bolts were used in the Ted Williams Tunnel. They failed safety tests in 1994 because the epoxy wasn't mixed correctly and wasn't allowed to harden for the appropriate amount of time. But those panels are seven times lighter and don't pose the same safety hazard.
Tunnel Bolts To Be Reinforced - Yahoo! News
So, seven times lighter, that would make them about 800 pounds.
No sweat!
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