A tractor-trailer blew a tire, according to the CHP, causing the driver to lose control of the vehicle. The tractor-trailer then sideswiped a box truck, which overturned. The tractor-trailer veered across lanes and crashed onto Metro Gold Line tracks, striking an energized power pole. Flames burned both vehicles.
Both drivers were able to extricate themselves and were able to walk away from the wrecks.
Traffic was backed up to the 134 Freeway during the full eastbound lane closure. Three lanes were opened by 4:30 p.m. All lanes were finally reopened after midnight, according to the CHP.
The Gold Line was expected to remain out of service between the Sierra Madre Villa and Lake stations for at least 24 hours due to the crash.
Metro said normal service is not expected to resume by Friday morning because of the extensive damage, which includes two downed poles that support the overhead power supply system and fallen wires. Metro said it will not know the true extent of the damage until the vehicle has been removed from the tracks.
Commuters can take a Pasadena ARTS line 140 bus between the two stations, and Metro fares will be honored on the bus. Metro is working to make a similar arrangement with Foothill Transit on the 187 bus that also travels between the two stations.
Pasadena City College said in a tweet that PCC Shuttle pick-ups and drop-offs will be moved to Lake Avenue and the 210.
Pasadena City College tweeted at 3 p.m.: "Because of 210 accident: Metro will provide transportation from Lake Avenue station to Allen. PCC will continue pickup from Allen station."
City News Service contributed to this report.