Eastbound and westbound lanes of traffic on Interstate 84 were shut down early this morning after the crash of a truck carrying hazardous materials in Umatilla County.

The crash occurred between 4 a.m. and 5 a.m. five miles east of Meacham in the westbound lanes. The crash also impacted the eastbound lanes because hazardous materials were within the half mile safety zone radius that goes into effect when there is a crash involving hazardous materials, said Oregon Department of Transportation spokesman Tom Strandberg.

A sign on the truck that crashed indicated it was carrying trimethalammonium hydroxide, a substance that can cause harmful health effects, according to the website www.signaaldrich.com.

The crash resulted in the eastbound lanes of Interstate 84 being closed from Pendleton to La Grande and the westbound lanes being closed form Pendleton to Ontario.

The westbound closure was initially to La Grande and extended to Baker City at Exit 302 between 5:30 a.m. and 6 a.m. Sometime before 7 a.m., the westbound lane closure was extended to Ontario because there was no room for trucks to park in Baker City after the hazardous materials crash forced the closure of the westbound lanes. The closure was extended to Ontario because there was no safe space left in Baker City for trucks, Strandberg said.