Why did WSDOT build another Tacoma Narrows Bridge?
The short answer is that the second bridge and related roadway improvements will improve the ability of people and freight to move more reliably and safely within the corridor. More specifically, growing congestion is a problem on the State Route (SR) 16 corridor; existing rush hour traffic is substantially greater than the roadway’s capacity. Today, and on a daily basis, 85,000 to 90,000 vehicles use the SR 16 corridor. WSDOT estimated that without a second bridge, freeway use would grow to 120,000 vehicles a day by 2020. However, construction of a toll suspension bridge parallel to the existing span likely will result in fewer vehicles crossing the Narrows. In light of this reality, by 2020 it’s estimated that 95,000 vehicles daily will travel east and west on SR 16. Sometime in the future, when and if it becomes necessary, the new bridge is designed to accommodate a second deck. Project Benefits • Safety – Separating oncoming traffic will significantly improve safety across the Taco
