Giant foam blocks are seen along I-5 between Portland Avenue and Port of Tacoma road in Tacoma, Wash., on Friday, Aug. 10. Joshua Bessex [email protected] Q: I’ve seen large (foam ...

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The large white blocks - known as expanded polystyrene ... McNabb is the engineering manager for the I-405/SR167 Program. The specialized foam has actually been around for years, according ...

They'll be driving on foam. Giant blocks of foam - known as expanded polystyrene -- are being used in construction projects across the Puget Sound, including the new State Route 99 ramps drivers ...

Geofoam is made of expanded polystyrene, a material similar to foam coffee cups, and is significantly lighter than regular construction material. Used in large blocks, the foam is stacked like ...