Authorities in Falls Township are investigating the theft of several I-beams, road plates and concretes basins.
The large items were taken from the 1700 block of Pennsylvania Avenue sometime before daybreak on Tuesday morning, police said.
The trailer and the missing items are valued at $11,300, according to police.
The department is also looking into four cases of slashed tires in the 100 block of Amelia Drive in Levittown.
Police report that all the damaged cars suffered slashed rear tires and was discovered Friday.
No suspects have been named in the Amelia Drive incident.