6:01 PM: Thanks to SDOT for the image: A Seattle Police/State Patrol response has two lanes blocked on the westbound West Seattle Bridge. According to what we heard via scanner, a state trooper had someone at gunpoint, and called for backup. SPD responded (you might have seen multiple cars headed full code through West Seattle). We don’t know the circumstances of the arrest or what preceded it, but everything is reported to be under control now.
6:35 PM: The scene has cleared to the shoulder, so no lanes blocked any more, per SDOT. Meantime, WSP Trooper Rick Johnson just called us after we asked what this was all about. He said a trooper “on his way to work at the ferry terminal” tried to pull over the driver, a woman, for reasons as yet unknown, and she refused to stop – so he saw what Johnson called a “perfect opportunity” for a PIT maneuver – Pursuit Intervention Technique, which causes the pursued vehicle to lose control and spin to a stop. He subsequently took the driver into custody; an ambulance was called to check her out because at the very least, Johnson explains, that gives the driver a jolt. She’ll eventually be booked into jail.