Repairs to track damaged by a derailed non-passenger car might not be completed by Monday’s evening rush hour, the Long Island Rail Road said.

Customers should expect delays and possible cancellations for the p.m. commute after the derailed car east of the Woodside station affected more than 20 morning rush-hour trains, including 15 cancellations or diversions, the LIRR said.

Repairs are ongoing, the LIRR said in emails and social media shortly after noon. Updates will be provided as the evening peak service period draws closer, the LIRR said.

The derailed non-passenger train closed one track into and out of Penn Station, generating systemwide delays and cancellations during the morning commute.

Spokesman Salvatore Arena said the car derailed east of the Woodside station sometime after 11 p.m. Sunday.

Operating with one less track during the morning commute, there were slightly more than 20 delays, averaging 10 to 20 minutes, including the 15 canceled or diverted trains, Arena said.

By about 11:15 a.m., Arena said the LIRR was operating on or close to schedule.

Arena said the derailed car was part of a small work train being pulled by a locomotive and probably carrying equipment for a project, Arena said.

“We couldn’t get it re-railed by 5 a.m.,” Arena said, “and whenever one of the tracks into or out of Penn is out of service, we go to a canceled combo plan.”

That plan includes cancellations and diversions affecting nearly 15 percent of the 130 trains the LIRR runs during morning rush hour, he said.

Arena said the plan means delays as well as some overcrowded cars, conditions customers shared in complaints on social media.

“Long Island Railroad? More like Long Island Fail Road,” tweeted jasonmichaelbrescia (@jm_Brescia).

The LIRR first alerted customers that they should expect delays, cancellations and diverted trains in an email at about 5 a.m., and the situation lasted through the end of the morning commute, as late as 10:30 a.m.