Railroad tie retaining walls cost $25 to $30 per square foot. Because they’re soaked in creosote, they don’t rot the way untreated wood does. But it’s also toxic to humans, making it a less popular option.
Railroad ties are the most commonly used wood for a retaining wall, and prices for this type of wall cost between $25 and $30 per square foot of wall. Untreated or soft woods are not recommended for retaining wall construction due to their susceptibility to rot and water damage. Use pressure-treated plywood to cover the wall.
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Frequently Asked Questions
Where to buy used railroad ties in North Dakota?
Chances that you may have one of these stores in your area are good, unless you’re from North Dakota (not too many Home Depots there). Home Depot sells used railroad ties, you can order them online and have them deliver to your place. They measure 7 in x 9 in x 8 ft and they weigh about 150 lbs.
How big are railroad ties at Menards?
The railroad ties sold by Menards are 7 in x 9 in x 8 ft, which is exactly the same size as Home Depot’s. On their website they state that the ties are salvaged from train track beds and are as well as the above mentioned ones, previously treated with creosote.