TAMPA, Fla. (WFLA) — Two separate crashes caused traffic problems for drivers in the Riverview area Monday morning.

The first crash happened near I-75 on Gibsonton Drive early Monday. The second happened around 7:30 a.m. near Riverview Drive.

Both crashes happened in the northbound lanes and have blocked lanes. Drivers saw delays between 40 minutes to an hour.

The best alternate routes to avoid that traffic – US-41 and US-301 – also saw congestion.

Police have not released any information on injuries associated with the crashes.

This is a developing story, please check back for updates.