Workers raise a box from the repair platform suspended from the West Seattle Bridge where patches and other structural work are being done to fix cracking and a threat of structural failure. The bridge remains closed. (Ken Lambert / The Seattle Times)
Workers raise a box from the repair platform suspended from the West Seattle Bridge where patches and other structural work are being done to fix cracking and a threat of structural failure. The bridge remains closed. (Ken Lambert / The Seattle Times)
Traffic Lab

How the city of Seattle watched as cracks in the West Seattle Bridge grew

Seattle transportation leaders watched for seven years as cracks slowly grew in the West Seattle Bridge. Finally, the cracking accelerated and forced a bridge closure.  VIEW

PRODUCED BY THE SEATTLE TIMES CONTENT STUDIO