“Ghost Trains” Begin Full-Schedule Runs Across I-90 Floating Bridge Today

It is a sight that Seattle commuters have been waiting nearly a decade to see. As of the morning of January 5, 2026, the “Ghost Trains” have officially arrived.

If you drove across the I-90 Floating Bridge (Homer M. Hadley Memorial Bridge) today, you likely witnessed a historic milestone in Pacific Northwest infrastructure. Sound Transit has quietly flipped the switch on Simulated Service for the 2 Line (East Link). For the first time, light rail trains are running on a full, revenue-level schedule between Seattle and Bellevue—completely empty.

Everything You Need to Know About the “Ghost Trains” Running Across Lake Washington

This is not just another round of slow-speed testing. This is the final dress rehearsal before the grand opening later this spring. The arrival of simulated service signals that the years of construction, the concrete curing, and the complex engineering of the world’s first light rail on a floating bridge are finally complete.

In this comprehensive report, we break down exactly what “Simulated Service” means for your commute, the engineering marvels behind the scenes, safety warnings for drivers, and what to expect in the final weeks leading up to the public launch.

What is “Simulated Service” and Why Does It Matter?

Simulated Service is the final phase of testing for any major transit line. It is the “final exam” for the system.

For the past year, you may have seen occasional trains moving slowly along the tracks in Bellevue or on Mercer Island. Those were “clearance tests” or “systems integration tests,” designed to check specific sensors or track alignment. Simulated Service is different.

Starting today, the entire 2 Line is operating as if it were fully open to the public, with one major exception: the doors are locked to passengers.

The Operational Reality:

• Frequency: Trains are running every 8 minutes during peak hours and every 15 minutes off-peak.
• Speed: Trains are hitting their maximum operational speeds (up to 55 mph) across the bridge deck.
• Stops: Operators are stopping at every station (Judkins Park, Mercer Island, South Bellevue, etc.), opening the doors, waiting the allotted dwell time, and closing them.
• Announcements: The automated voice systems are announcing stops to an empty cabin.

The goal is to stress-test the electrical grid, the signaling software, and the operators’ schedules. Sound Transit needs to prove that adding these trains to the network won’t cause backups in the downtown Seattle transit tunnel, where the 2 Line merges with the existing 1 Line (Sea-Tac to Lynnwood).

The I-90 Bridge: An Engineering World First

The most critical part of this testing phase is the crossing of Lake Washington. This is the segment that has garnered global attention from engineers and transit agencies.

Running a 400-ton train across a floating bridge is incredibly difficult. The bridge moves with the wind, the waves, and the water levels of the lake.

• The Challenge: Steel rails are rigid. Floating bridges are not. If a bridge moves 6 inches during a storm, rigid rails would snap.
• The Solution: The “Track Bridge” technology. This specialized engineering allows the tracks to flex and curve with the bridge’s movement without derailing the train.

During this Simulated Service phase, engineers are monitoring the Track Bridge mechanisms with extreme precision. They are analyzing how the weight of full-speed trains affects the buoyancy of the pontoons during typical January storms. Seeing these trains running at 55 mph today is the ultimate validation of decades of engineering theory.

Commuter Alert: The “Distraction Factor”

While this is good news for transit advocates, it poses an immediate risk for drivers.

The Washington State Patrol (WSP) and WSDOT have issued advisories regarding “visual distractions” on I-90.

• The Issue: For years, the center lanes of I-90 have been a construction zone—static and boring. Suddenly, large, brightly colored trains are zooming past drivers at eye level, often matching the speed of traffic.
• The Risk: “Rubbernecking.” Drivers slowing down to film the trains or simply staring at the new movement can cause rear-end collisions, especially during the morning merge from Mercer Island.
• The Advice: Keep your eyes on the road. The trains are here to stay; you will have plenty of time to look at them from a safe distance later.

Station-by-Station Status Update

With Simulated Service active, the stations are now “live” environments. Here is what is happening at the key stops along the new line:

1. Judkins Park Station (Seattle) Located in the middle of I-90, this station is the new gateway for the Central District. Neighbors will notice lights fully on and announcements playing. Security patrols have been increased to prevent eager riders from trying to enter the platform.

2. Mercer Island Station This is the only station located directly on the I-90 roadway on the island. The “train hum” is now a regular part of the soundscape. Testing here focuses heavily on noise mitigation walls to ensure they are functioning as promised to the local residents.

3. South Bellevue Station The massive park-and-ride garage is already open, but the platform has been quiet until now. This station serves as the primary “transfer point” for Eastside buses. During simulated service, you will see buses practicing their drop-off loops to sync with the train arrivals.

The Critical “Tunnel Merge”

The most technical aspect of the 2 Line is where it enters Downtown Seattle. The trains leave I-90, travel through the International District, and merge into the existing tunnel just south of the International District/Chinatown Station.

This is a high-stakes maneuver. The 1 Line (Airport trains) runs every 8 minutes. The 2 Line (Bellevue trains) also runs every 8 minutes. This means a train will be entering the downtown tunnel every 4 minutes in alternating directions.

Simulated Service is designed to perfect this “zipper merge.” If a 2 Line train is 30 seconds late, it could cascade delays all the way to Northgate or Sea-Tac. This is why the “Ghost Train” phase is usually scheduled for 6 to 8 weeks—it takes time to iron out the timing to the second.

Economic Impact: The “Eastside Connection”

The start of simulated service is a “green light” signal to the real estate and job markets.

• Corporate Connectivity: For the first time, employees at Microsoft (Redmond), Amazon (Bellevue), and Meta (Spring District) can visualize a reliable, traffic-free commute from Seattle.
• Housing Values: Real estate agents in the Central District and Rainier Valley have reported a spike in interest for “walk-to-station” properties now that the trains are visibly running.
• Retail Prep: Businesses near the stations (especially in the Spring District and Wilburton) are ramping up hiring, anticipating the flood of foot traffic in March/April.

Safety Warnings for Pedestrians

With the tracks now “hot” (electrified) and trains running quietly at high speeds, safety is paramount.

• Do Not Trespass: The overhead catenary wires carry 1,500 volts of DC electricity.
• Look Both Ways: In the Bel-Red corridor (where trains run at street level), pedestrians and drivers have grown used to empty tracks. That changes today. The trains do not stop quickly.
• Test Trains Don’t Stop for You: Even if you are standing on a platform, these trains will not open their doors. Do not attempt to flag them down.

What Comes Next? The Countdown to Opening

So, when can you actually tap your ORCA card and ride?

Simulated Service typically lasts a minimum of 6 weeks, but can extend if software bugs are found.

• Best Case Scenario: Testing concludes in mid-February. Sound Transit announces a grand opening for late March 2026.
• Standard Scenario: Minor tweaks are needed in the tunnel signaling. Opening pushed to mid-April 2026.

Regardless of the specific date, the start of simulated service is the point of no return. The trains are running. The schedules are set. The connection between Seattle and the Eastside is, for all intents and purposes, alive.

Frequently Asked Questions (FAQ)