RTD says A-line passengers should expect delays Wednesday morning after a semi-truck hit a crossing gate structure at the Holly Crossing, causing extensive damage.

In wake of the incident, the A-line is only using track 2 in between Bright and Quebec. They say they’ve doubled the amount of trains on that track to accommodate as many passengers are possible.

People taking the train between 6 a.m. and 10 a.m. should allow extra travel time, RTD said. The trains are running every 30 minutes with four cars each trip.

This is the second morning in a row the A-line has been delayed. A server issue caused a delay Tuesday morning, but that was quickly resolved.

The A-line, which opened in April, runs between Union Station and Denver International Airport.

You can read Wednesday’s the full alert here:

Due to a semi truck striking a crossing gate structure at Holly Crossing and causing extensive damage, we can only use Track 2 between Bright and Quebec. As a result, we are running 30 minute headways on the University of Colorado A Line. Trains are doubled to accommodate as many passengers as possible. Please allow extra travel time during the next 4 hours. We apologize for any inconvenience.