The I-5, I-405, SR 99 and SR 520 closures could cause backups beyond the freeway on surface streets and alternate routes not typically impacted by heavy traffic.

Another weekend, another round of traffic closures across the Puget Sound.

Traffic Lab is a Seattle Times project that digs into the region’s transportation issues to explore the policies and politics that determine how we get around and how billions of dollars in public ...

State transportation officials are considering raising toll rates on Interstate 405 and State Route 167 to $18 and shifting other policies, after capping the dynamic rate ...