July 22, 2025

Massive superload transport on I-80 expected to cause delays

Steve Smith

Massive superload transport on I-80 expected to cause delays

A massive superload is hitting I-80 in Wyoming this week, and drivers can expect slow traffic on Wednesday, July 23, 2025.

What's happening: A transformer weighing 1.48 million pounds will be hauled from the Laramie railyard to Medicine Bow, starting at 6 a.m.

The load is 17 feet tall, 26 feet wide, 385 feet long, and will take up both westbound lanes.
It will crawl along I-80 at 25–30 mph, and drop to 10 mph on bridges until it leaves the highway at exit 272 in Arlington.
After that, the route goes north on Wyoming Highway 13 to Rock River, and then on US Highway 30/287 to Medicine Bow.

Between the lines: WYDOT says to expect full stoppages and big delays; alternate routes are suggested for anyone not hauling freight through the area.

This is the second superload on this stretch of I-80 so far this summer, and officials plan to move another transformer in the coming weeks. The current transport is expected to finish by noon Wednesday.

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