An overnight big rig crash and fire forced the closure of northbound 101 just south of San Luis Obispo early Thursday morning.
No injuries were reported.
"For unknown reasons the driver allowed the vehicle to travel into the center median and collide with the guardrail," the CHP said in an update via social media. "The vehicle then struck the concrete bridge overcrossing causing major damage."
The vehicle came to rest hanging from the over-crossing over Higuera Street.
A pilot program in underway in the Santa Barbara Channel aimed at reducing air pollution and saving migrating whales. The plan calls for large container ships passing through the area to significantly slow down.
Only a small fraction of the annual shipping traffic through the channel—some 2,500 ships—will be affected by this program initially, but organizers are hoping it will still make a measurable difference.