MOUNT VERNON, Wash. — On May 23, 2013, the Skagit River Bridge collapsed when a truck carrying an oversize load struck the overhead support beams, causing it to crumble into the water, along with three people in two cars.
A Washington State Patrol report said the oversized load was two inches too high.
Troopers placed the blame on the truck driver , William Scott of Alberta, Canada.
Read More They cited him for second-degree negligent driving — a $550 fine, but Scott fought the ticket. Troopers said the pilot driver did not warn the truck driver about bridge’s the low clearance.
Documents from the National Transportation Safety Board included vivid details from the truck driver , who described what happened after the load hit the bridge.
“So it was just a horrendous boom and things were -- it was violent in the cab,” Scott told the NTSB, according to a transcript included in 2,000 pages of investigative documents reviewed by KIRO 7.
No one was killed in the collapse, but it cost the state $17 million to replace the span.
A KIRO 7 Eyewitness News viewer captured images of the collapsed Interstate 5 bridge into the Skagit River.
A KIRO 7 Eyewitness News viewer captured images of the collapsed Interstate 5 bridge into the Skagit River.
A KIRO 7 Eyewitness News viewer captured images of the collapsed Interstate 5 bridge into the Skagit River.
A KIRO 7 Eyewitness News viewer captured images of the collapsed Interstate 5 bridge into the Skagit River.
A KIRO 7 Eyewitness News viewer captured images of the collapsed Interstate 5 bridge into the Skagit River.
A KIRO 7 Eyewitness News viewer captured images of the collapsed Interstate 5 bridge into the Skagit River.
A KIRO 7 Eyewitness News viewer captured images of the collapsed Interstate 5 bridge into the Skagit River.
A KIRO 7 Eyewitness News viewer captured images of the collapsed Interstate 5 bridge into the Skagit River.
A KIRO 7 Eyewitness News viewer captured images of the collapsed Interstate 5 bridge into the Skagit River.
A KIRO 7 Eyewitness News viewer captured images of the collapsed Interstate 5 bridge into the Skagit River.
A KIRO 7 Eyewitness News viewer captured images of the collapsed Interstate 5 bridge into the Skagit River.
A KIRO 7 Eyewitness News viewer captured images of the collapsed Interstate 5 bridge into the Skagit River.
A KIRO 7 Eyewitness News viewer captured images of the collapsed Interstate 5 bridge into the Skagit River.
A KIRO 7 Eyewitness News viewer captured images of the collapsed Interstate 5 bridge into the Skagit River.
A KIRO 7 Eyewitness News viewer captured images of the collapsed Interstate 5 bridge into the Skagit River.
A crowd gathered after the Interstate 5 Skagit River Bridge collapsed Thursday evening.
The Interstate 5 bridge over the Skagit River collapsed Thursday evening, where vehicles and people into the water.
The Interstate 5 bridge over the Skagit River collapsed Thursday evening, where vehicles and people into the water.
Chopper 7 flew over the Interstate 5 Skagit River Bridge, which collapsed Thursday evening.
The Interstate 5 Skagit River Bridge collapsed Thursday evening.
The Interstate 5 bridge over the Skagit River collapsed Thursday evening, where vehicles and people into the water.
The Interstate 5 bridge over the Skagit River collapsed Thursday evening, where vehicles and people into the water.
Skagit River Bridge collapse survivor Bryce Kenning and his mother, Sheila Kenning, with their dog Buzz.
Chopper 7 flew over the Interstate 5 Skagit River Bridge, which collapsed Thursday evening.
The Interstate 5 Skagit River Bridge collapsed Thursday evening.
The Interstate 5 Skagit River Bridge collapsed Thursday evening and Chopper 7 flew over the scene.
The Interstate 5 bridge over the Skagit River collapsed Thursday evening, where vehicles and people into the water.
Chopper 7 flew over the Interstate 5 Skagit River Bridge, which collapsed Thursday evening.
Chopper 7 flew over the collapsed Interstate 5 bridge over the Skagit River.
The Interstate 5 Skagit River Bridge collapsed Thursday evening and Chopper 7 flew over the scene.
Chopper 7 flew over the collapsed Interstate 5 bridge over the Skagit River.
The Interstate 5 Skagit River Bridge collapsed Thursday evening and Chopper 7 flew over the scene.
The Interstate 5 bridge over the Skagit River collapsed Thursday evening, where vehicles and people into the water.
The Interstate 5 bridge over the Skagit River collapsed Thursday evening, where vehicles and people into the water.
The Interstate 5 bridge over the Skagit River collapsed Thursday evening, where vehicles and people into the water.
Chopper 7 flew over the Interstate 5 Skagit River Bridge, which collapsed Thursday evening.
The Interstate 5 bridge over the Skagit River collapsed Thursday evening, where vehicles and people into the water.
The Interstate 5 bridge over the Skagit River collapsed Thursday evening, where vehicles and people into the water.
The Interstate 5 bridge over the Skagit River collapsed Thursday evening, where vehicles and people into the water.
The Interstate 5 Skagit River Bridge collapsed Thursday evening and Chopper 7 flew over the scene.
An oversize blue steel trailer on a semi-truck was carrying drilling equipment when it slammed into several trusses of the I-5 Skagit River overpass.
An oversize blue steel trailer on a semi-truck was carrying drilling equipment when it slammed into several trusses of the I-5 Skagit River overpass.
An oversize blue steel trailer on a semi-truck was carrying drilling equipment when it slammed into several trusses of the I-5 Skagit River overpass.
An oversize blue steel trailer on a semi-truck was carrying drilling equipment when it slammed into several trusses of the I-5 Skagit River overpass.
An oversize blue steel trailer on a semi-truck was carrying drilling equipment when it slammed into several trusses of the I-5 Skagit River overpass.
An oversize blue steel trailer on a semi-truck was carrying drilling equipment when it slammed into several trusses of the I-5 Skagit River overpass.
An oversize blue steel trailer on a semi-truck was carrying drilling equipment when it slammed into several trusses of the I-5 Skagit River overpass.
An oversize blue steel trailer on a semi-truck was carrying drilling equipment when it slammed into several trusses of the I-5 Skagit River overpass.
An oversize blue steel trailer on a semi-truck was carrying drilling equipment when it slammed into several trusses of the I-5 Skagit River overpass.