Sound Transit has a dead fish problem

Live updates

1. 6d ago

   Federal and tribal reviews launched after 2,000 fish die near I-90 light rail

   Federal and tribal agencies are reviewing the deaths of approximately 2,000 fish in Lake Washington near Sound Transit's I-90 floating bridge light rail. The carcasses include threatened Chinook salmon. The deaths occurred near electrical anodes hanging into the water. Sound Transit has acknowledged the losses and is implementing system fixes while investigating the cause of the mortality.

   Why it matters

   The light rail line across the I-90 floating bridge opened in March 2026. It is the first light rail system of its kind in the world. The presence of threatened species increases the regulatory scrutiny of the incident.

   What is confirmed

   • About 2,000 fish died near the Sound Transit I-90 light rail line in Lake Washington.
   • The deaths occurred near hanging electrical anodes.
   • The light rail line across the I-90 floating bridge opened in March 2026.

   Still unconfirmed

   • The fish were zapped dead by the light rail.

   What to watch next

   • Findings from the federal and tribal reviews
   • Results of the Sound Transit probe into the exact cause of mortality
   Sources used for this update (4)

   1. lynnwoodtimes.com — Sound Transit Floating Bridge Light Rail Linked to Mass Fish Deaths in Lake Washington
   2. www.postcourier.com.pg — Drum – Tidbit
   3. hoodline.com — About 2,000 Fish Die Under I-90 Light Rail, Chinook Among the Carcasses
   4. nwsportsmanmag.com — Chinook Among Fish Zapped Dead By Sound Transit Light Rail Across Lake Washington
   confidence 90%
2. 9d ago

   Sound Transit investigates Lake Washington fish deaths near I-90 rail line

   Sound Transit is investigating the deaths of approximately 2,000 fish in Lake Washington near its light rail bridge system. The deaths occurred near electrical equipment hanging into the water following the March 2026 opening of the rail line across the I-90 floating bridge. Sound Transit has acknowledged the losses and begun implementing fixes to the system while probing the exact cause of the mortality.

   Why it matters

   The light rail crossing of the I-90 floating bridge was a major transit milestone for Seattle. The current incident links the infrastructure's electrical components to environmental damage in the lake.

   What is confirmed

   • Sound Transit says its light rail bridge system may have killed 2,000 Lake Washington fish.
   • The light rail service across the I-90 floating bridge opened in March 2026.
   • Fish died near electrical equipment hanging into Lake Washington.

   Still unconfirmed

   • The fish deaths were caused by light rail electrocution.

   What to watch next

   • Effectiveness of the implemented electrical fixes.
   Sources used for this update (9)

   1. MyNorthwest.com — Sound Transit has a dead fish problem
   2. KING5.com — Sound Transit says light rail bridge system may have killed 2,000 Lake Washington fish
   3. KOMO — Sound Transit probes fish deaths near I-90 floating bridge rail line as fixes begin
   4. Axios — Sound Transit's Lake Washington light rail appears to be killing fish
   5. thestranger.com — Slog AM: Sound Transit Killed 2,000 Fish, Gen Z Is Talking Less, JD Vance Says War in Iran Isn't a War
   6. seattletimes.com — Miracle on water: Why light rail can cross Seattle’s floating bridge
   7. KIRO 7 News Seattle — Thousands of fish dead in Lake Washington, possibly from Sound Transit light rail electrocution
   8. The Times of India — Seattle opened light rail across the I-90 floating bridge in March; five months later about 2,000 fish have died near electrical equipment hanging into Lake Washington
   9. timesofindia.indiatimes.com — Seattle opened light rail across the I-90 floating bridge in March; five months later about 2,000 fish have died near electrical equipment hanging into Lake Washington
   confidence 90%