Water main break closes lanes on E. Marginal Way in Seattle, backs up SR 99 commute
Jan 6, 2026, 10:02 AM
Screenshot of SDOT cameras capturing the gas leak on E. Marginal Way. (Photo courtesy of SDOT)
(Photo courtesy of SDOT)
A water main has burst on E. Marginal Way in Seattle, causing significant traffic congestion along the northbound lanes of SR 99 during prime commuting hours.
The Seattle Department of Transportation (SDOT) first posted about the break just after 7 a.m., confirming that three northbound lanes of E. Marginal Way South at the intersection of Diagonal Avenue South were blocked.
Water main break at East Marginal Way S & Diagonal Ave S blocking 3 NB lanes. Use caution and expect delays. pic.twitter.com/A9owRjDhIE
— SDOT Traffic (@SDOTtraffic) January 6, 2026
The Seattle Police Department (SPD) closed off E. Marginal Way S. between Hudson Street and Diagonal Avenue S. at approximately 9 a.m. S. Alaska Street is also closed, as of this reporting.
A water main break at East Marginal Way & Diagonal Ave S is causing congestion to NB SR 99 in Seattle.
Plan for delays or take an alternate route. https://t.co/cUTw17yFjS pic.twitter.com/KTdNHIZxPa
— WSDOT Traffic (@wsdot_traffic) January 6, 2026
This is a developing story, check back for updates
