The weight of a railroad tie ranges between 145 and 200 pounds, depending on its condition or slope. According to the Railway Tie Association, this weight is based on the most popular size of railroad tie currently in use.
The most common dimensions for railroad ties are 9 inches wide by 7 inches tall by 8 feet and half a foot long. The alternative standard length is 9 feet. The weight of a railroad tie fluctuates due to variables such as cracking, checking, and the volume and type of material used to treat it (to preserve and extend its usable life).