first_imgUPDATE: An Interstate 5 slowdown for Columbia River Crossing pre-construction testing work is now delayed until this evening or to a later date, CRC spokeswoman Anne Pressentin said. The Columbian will update the story when the new timing of a slowdown is announced.ORIGINAL STORY: The Washington State Patrol is expected to slow traffic on Interstate 5 southbound from Mill Plain Boulevard to the Interstate Bridge at 11 a.m. to accommodate pre-construction work for the Columbia River Crossing.Crews have been driving piles and test shafts as part of pre-construction project to evaluate the strength of the soil and the construction techniques for the replacement Interstate 5 Bridge support structures. This morning, crews will be using a large crane to install a 150 foot metal reinforcing cage just west of I-5, requiring the slowdown, CRC spokeswoman Anne Pressentin said.The slowdown is expected to last between 30 and 45 minutes; drivers are advised to take alternate routes.Northbound I-5 will not be affected.last_img