UPDATE (1:45 p.m.):

I-25 has reopened in both directions. 

Sgt. Kyle McKay of the Wyoming Highway Patrol told K2 Radio News that the closure of I-25 northbound between mile markers 151 and 155 was due to a rollover crash and a commercial truck which caught fire.

Whether anyone was injured or how many vehicles were involved in the crash is still unknown. McKay did not immediately have further details.

We will continue updating this story as we learn more.

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UPDATE (1:30 p.m.):

A number of photos circulating on social media show a commercial truck burning in the closed area of I-25. The cause of the fire remains unclear, as does the nature of the hazardous material said to be involved.

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UPDATE (1:15 p.m.):

The southbound lanes of I-25 from Casper to Douglas have reopened, as have the northbound lanes from Douglas to Glenrock.

Interstate 25 is now only closed northbound between Glenrock and Casper. The closure, initially listed as the result of a crash, is now said to be due to unspecified hazardous material.

We continue to pursue further details, and will update this story as they become available.

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Original Story:

A crash forced authorities to close Interstate 25 in both directions between Casper and Glenrock on Wednesday.

The crash purportedly occurred in the Glenrock area, though the exact location has not been confirmed.

A witness told K2 Radio News that smoke is visible from the crash site. We are working to confirm further details.

The Wyoming Highway Patrol has not yet returned a request for comment. This story will updated when authorities tell us more.

The latest updates on this closure will be available at WyoRoad.info.