A railroad tie weighs between 145 and 200 pounds, depending on the condition or grade of the tie. This weight is based upon the most common size of railroad tie in use today, according to the Railway Tie Association.
The most common size of railroad tie is 9 inches wide, 7 inches tall and 8 1/2 feet long. The other common length is 9 feet. Due to conditions such as cracking, checking, and the volume and type of material used to treat a railroad tie (in order to preserve and extend its useful life), the weight of a railroad tie varies.