Delays came as drivers were diverted around road damage on temporary detours or the highway was reduced to one lane while crews try to reconstruct the roadway after the temblor caused sinkholes and buckled pavement.
A powerful natural disaster shook southern Alaska on Friday morning, buckling roads, disrupting traffic and knocking television stations off the air in the state's largest city, but there were no immediate reports of injuries.
The quake rattled buildings in Anchorage, but the reverberations were so strong they were felt up to 350 miles away.
Geophysicist Paul Caruso says 11 aftershocks have had magnitudes of 4.5 or greater.
"That would have given people a shake and probably a bit of a scare given what they went through yesterday", he told CNN on Saturday.
A powerful quake rocked Anchorage on Friday, violently shaking homes and businesses, sending scared residents into the streets and damaging buildings in Alaska's largest city..
Anchorage Police Chief Justin Doll says parts of Glenn Highway, a scenic route that runs northeast of the city, had "completely disappeared".
Anchorage Mayor Ethan Berkowitz said it was clear this natural disaster was bigger than what the city normally experiences.
The Anchorage Historic Depot and most other railroad facilities had only minor damage. "I would characterise this as a demonstration that Anchorage is prepared for these kind of emergencies".
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Traffic outbound from Anchorage on the Glenn Highway was at a standstill after a 7.0-magnitude quake caused damage in the Anchorage, Alaska, on Friday, Nov. 30, 2018.
Two of the city's main hospitals - Alaska Regional and Providence Alaska Medical Center - sustained damage but emergency rooms were open, according to hospital officials.
Anchorage's school system canceled classes through Tuesday while it examined buildings for damage.
KTUU's website featured a photo of a snow-covered highway that had buckled, with a auto sitting between two deep fissures crossing the highway. "This was very, very scary, damage that we don't fully understand", Walker said in a video statement from outside a National Guard armory command center. "We live in quake country ... but this was a big one".
Sarah said the video was recorded by her father.
Authorities don't have firm figures on damage yet.
Books and ceiling tiles litter the floor at theThe Mat-Su College library in Anchorage.
On it's Facebook page, the department wrote, "There is major infrastructure damage across Anchorage".
The caption said: "The first floor for the second natural disaster". The 5.7 aftershock arrived within minutes, followed by a series of smaller quakes.