SAN FRANCISCO - Authorities overseeing the Golden Gate Bridge have announced a plan to try to stop the bridge from making a humming sound in the wind.
The wind-produced tones are the side effect of a handrail retrofit designed to make the span more aerodynamic on gusty days.
The Golden Gate Bridge Highway and Transportation district is expected to approve a plan this week to fix it.
The plan calls for attaching U-shaped clips to all 12,000 slats on the railings.
It would cost $450,000 and could be finished by the end of next year if approved.
The aerodynamic phenomenon has left drivers perplexed with some describing it as eerie, mournful or annoying.