(SCROLL DOWN FOR W. MARGINAL WAY SW CLOSURE UPDATES)






(Six WS-relevant views; more cams on the WSB Traffic page)
7:09 AM: Though there’s been no alert from SDOT, we’re told West Marginal Way SW is still closed near the Duwamish Longhouse, following a crash last night that was reported to have taken out a utility pole.
7:38 AM: Our crew has just verified that it’s indeed closed both ways in the 4700 block while Seattle City Light crews work on repairs:

The pole is down by the Herrings House Park entrance on the river side of the road.
8:10 AM: Here’s a view showing the work right over the Duwamish Trail:

8:34 AM: Now there’s a crash at W. Marginal Way and Puget Way. Multiple sources say it involves a semi-truck.
9:09 AM: For now, we’ll continue updating the W. Marginal situation here. We’re also checking with City Light on why this has been an all-night-and-beyond repair job.
9:31 AM: City Light’s Scott Thomsen explains why this has been so complicated:
The crash involved a semi tractor-trailer. It obliterated the pole.
First, crews had to wait for the semi to be removed before they could start work.
They also have had to take extra safety precautions because the location is right next to a railroad line. That’s why the crews have been using the roadway as their work zone. Other safety considerations are in place because of an adjacent high-voltage transmission line.
Then there’s the complicated nature of the repair because of the equipment that particular pole was hosting.
That pole was carrying two feeder circuits and switching gear. It uses our heaviest, most robust wire, so replacing the lines requires more equipment and lineworkers.
Because of the location and the weight of all that gear, the pole was reinforced with a support pole and multiple guy wires on the opposite side of the road.
Crews continue to work on replacing all of that equipment and expect to finish about noon.
11:57 AM: Thanks to the commenter who reported that W. Marginal Way SW now has one lane open each way.
ADDED WEDNESDAY EVENING: We asked SDOT about the lack of signage and other alerts. Spokesperson Norm Mah replied: “While Seattle City Light had appropriate traffic control near their major electrical repair response, advance warning signage on the roadway likely would have been beneficial for providing earlier warning to the traveling public. We will work with SCL to ensure they incorporate that for future emergency repair responses that require temporary roadway closures.”
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