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Emergency crews are responding to the scene of a major accident on the Southeast Side on I-37 involving two 18 wheelers and multiple vehicles Wednesday, Feb. 1, 2017.

Emergency crews are responding to the scene of a major accident on the Southeast Side on I-37 involving two 18 wheelers and multiple vehicles Wednesday, Feb. 1, 2017.

Emergency crews are responding to the scene of a major accident on the Southeast Side on I-37 involving two 18 wheelers and multiple vehicles Wednesday, Feb. 1, 2017.

Emergency crews are responding to the scene of a major accident on the Southeast Side on I-37 involving two 18 wheelers and multiple vehicles Wednesday, Feb. 1, 2017.

Emergency crews are responding to the scene of a major accident on the Southeast Side on I-37 involving two 18 wheelers and multiple vehicles Wednesday, Feb. 1, 2017.

Emergency crews are responding to the scene of a major accident on the Southeast Side on I-37 involving two 18 wheelers and multiple vehicles Wednesday, Feb. 1, 2017.

Emergency crews are responding to the scene of a major accident on the Southeast Side on I-37 involving two 18 wheelers and multiple vehicles Wednesday, Feb. 1, 2017.

Emergency crews are Bahis Siteleri responding to the scene of a major accident on the Southeast Side on I-37 involving two 18 wheelers and multiple vehicles Wednesday, Feb. 1, 2017.

Emergency crews are responding to the scene of a major accident on the Southeast Side on I-37 involving two 18 wheelers and multiple vehicles Wednesday, Feb. 1, 2017.

Emergency crews are responding to the scene of a major accident on the Southeast Side on I-37 involving two 18 wheelers and multiple vehicles Wednesday, Feb. 1, 2017.

SAN ANTONIO — The northbound lanes of Interstate 37 are shut down on the Southeast Side Wednesday after a major accident involving two 18 wheelers and multiple vehicles, according to police.

Police and other emergency crews are on scene  at I-37 and Old Corpus Christi Road, and at this time there is no report of injuries.

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It is unclear how long the highway will be shut down.

According to traffic app Waze, the accident has already caused a delay of more than an hour.

This story will continue to be updated as more information is available.

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