A landslide on the Seward Highway early Monday morning brought traffic to a standstill for five hours while workers cleaned up the debris.

The wall of mud, rocks and trees was discovered near mile 105 of the highway, near Indian, at 5:50 am. It covered both sides of the highway, took out a guardrail and rained debris on the railroad tracks below. Both lanes of the Seward Highway were closed between mileposts 105 and 107 while crews worked to clear the debris.

The road was reopened just before 11:30 a.m.

Department of Transportation Spokesperson Shannon McCarthy said DOT workers worked overtime to clean it up.

The timing was good," said McCarthy. "Our Anchorage crew and our Girdwood crew were just getting off their shift so they came down here with equipment and we were able to respond as soon as the geologist gave us the go-ahead."

According to a Facebook post by Alaska DOT, the slide was estimated to be "four feet deep and 75 feet wide."

A DOT geologist said unseasonably warm weather may have played a role in causing the slope to slide, including recent heavy rains. He said the area appears to be safe but it's possible more debris could come down, adding that he hadn't seen an actual landslide on that section of highway in over a dozen years.

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He urged drivers to use caution and report any debris on the highway to State Troopers or the DOT.

No injuries were reported.

Lauren Maxwell contributed to this report.

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