During the northbound I-5 Interstate Bridge closure Sept. 12-20, travelers between Vancouver and Portland will share the three existing lanes and sidewalk on the southbound bridge. A movable concrete barrier will shift lanes to allow for two lanes of travel in the direction of the heaviest commute times. For example, the bridge will have two southbound lanes and one northbound during the AM commute, and two northbound lanes and one southbound in the PM. This video shows how crews will switch the