DALLAS (AP) A 1.2 million pound steam locomotive headed for a larger home in North Texas has been sidelined in suburban Dallas until at least next weekend.

A spokeswoman for the city of Frisco says the historic engine dubbed "Big Boy" was in a restricted area of Irving on Tuesday and will not move during the week.

Denise Stokes says the locomotive, which on Sunday began its 10 mph trip from Fair Park in Dallas, remains away from main railroad traffic. She says the trip to Frisco, about 30 miles north of Dallas, could resume by Saturday or Sunday.

Rail traffic issues have delayed the arrival of the former Union Pacific Railroad engine at the new location for the Museum of the American Railroad. The route by rail is 55 miles.