A pick-up truck hauling a fifth wheel trailer crashed on northbound I-5 early Tuesday, slowing traffic for nearly six hours, according to Washington State Patrol.
The scene finally was cleared about 9 a.m., Trooper John Dattilo said.
About 3:45 a.m. Tuesday, the truck driver lost control of his vehicle and the trailer rolled over in the area of northbound I-5 and Henderson Boulevard in Olympia.
The crash slowed rush-hour traffic because it blocked two lanes of the freeway.
Dattilo said it took longer than usual to clear the scene because after the trailer rolled over it released about five gallons of wastewater that needed to be cleaned up.
A special tow truck also had to called to the scene to remove the vehicle, he said.
Details on whether the driver was cited or injured were not immediately available.
