Over 2,100 people have signed up so far for the opportunity to walk on the Hood River/White Salmon Interstate Bridge on October 6 in commemoration of the structure’s 100th anniversary.  The narrow bridge has never been open to pedestrians.  Port Executive Director Kevin Greenwood says the public will have a chance to go on to the structure on foot.  The bridge will be open to walkers on October 6 from 10 a.m. to noon, while it will be closed to motorists from 9:30 to 12:30.  To sign up to walk on the bridge, go to portofhoodriver.com.