10:48 AM: As mentioned earlier in the morning traffic watch, a collision investigation at 1st/Columbia has closed the SB Alaskan Way Viaduct onramp many use to get to West Seattle from downtown. A pedestrian has life-threatening injuries, according to Seattle Fire, and Seattle Police are expected to be on scene investigating for several hours. We’ll update when there’s word it’s reopened.
11:18 AM: This is affecting transit too:
Transit Alert – Expect possible transit service delays near the SB on ramp to the Alaskan Way Viaduct. Use the stop SB 2 Av at Cherry St.
— King County Metro (@kcmetrobus) January 5, 2017
1:17 PM: SDOT has just tweeted that the investigation is over and the intersection and onramp are open again. We haven’t heard any updates about the pedestrian.
1:44 PM: On SPD Blotter, police say the incident started with a truck headed southbound on 1st colliding with a car headed west on Columbia; the pedestrian and a third vehicle were then hit.