Building a retaining wall with railroad ties is a more affordable alternative to traditional stone or block. This article covers the pros and cons, simple steps you should take, and issues you’ll need to consider.
Adding a retaining wall will not only give your property a nice upgraded look but also make it safer and more usable. Retaining walls serve a number of different functions. They can be constructed to retain water, soil or other materials that would otherwise build up and pose a hazard to you and your family. They are also beneficial in cases where the existing terrain could not support certain structures or land features.

🛠️ How to Build a Railroad Tie (Crosstie) Retaining Wall – Builder‑Style, Direct from the Field
1. Prepare & Level the Base
From Instructables:
“First, we leveled the area … then tamped the dirt to make a nice, hard foundation. … It will settle and shift a bit no matter what you do.”
A flat and firm base, well compacted, is crucial — imperfections now will get worse over time.
2. Trench & Drainage Setup
“Cut the area … about 5 or 6 inches deeper than the railroad ties so you have room to fill … with gravel. This will allow any water … to seep into the gravel instead of bulging out your tie wall.”
instructables.com
A gravel trench behind the first tie ensures water doesn’t pressure the wall over time.
3. Lay & Level the First Course
“Once you have a good bed of gravel … level the first tie … adjust … until it is level in both directions.”
This base tie sets the tone — ensure it’s dead level front-to-back and side-to-side.
4. Pin the Ties for Stability
“Next … make some pins … Most people use rebar … about 2–2½ feet long … drill holes … then pound them in.”
instructables.com
Rebar pins bind each tie to those below, adding shear strength and keeping them in place.
5. Backfill & Tamp Between Layers
“Fill that 5–6 inch gap between the back of the tie and the hill … tamp it down … add about 2–3 inches of gravel at a time and tamp it.”
Packed gravel behind each course supports weight, enhances drainage, and keeps things snug.
6. Stack & Repeat
“Repeat the process … place a railroad tie … drill into it … drive in the pins, fill the back side with gravel, tamp it down and repeat!”
Course by course, level and pin until you reach the final height.
đź”§ Additional Tips
Wall lifespan:
Treated ties often last around 20–30 years, but in good shape can make 40+ year walls.
Toxicity caution:
Creosote-treated ties are common, but toxic—avoid around kids and pets.
✅ Builder’s Cheat-Sheet
Level & compact soil
Trench ~6″ deeper than tie height
Lay 4″ gravel base + 1st tie
Drill & pin with 2–2½ ft rebar per tie
Backfill behind, tamp gravel in 2–3″ lifts
Level each course before pinning
Finish backfilling & landscape as desired

Railroad tie retaining walls are made from wood, which means they will last longer than other types of material. However, this does not mean that they can’t start to deteriorate over time. Make sure that you keep an eye on your railroad tie retaining wall so that you know when repairs need to be made or replacements are necessary.
Railroad Tie Retaining Wall Cost
The cost of railroad tie retaining walls depends on what type of material you want to use as well as how much labor is involved in building them. If you’re constructing a large garden then it may be worth hiring someone
Railroad tie retaining walls are a popular choice for homeowners, as they are relatively easy to construct and can be built in a variety of styles. Their most common use is to create raised beds in the garden, but they can also be used to make walkways or driveways. The main benefit of railroad tie retaining walls is that they are relatively inexpensive compared to other types of retaining walls, such as poured concrete or block walls.
Railroad tie retaining walls are built using wooden railroad ties that have been cut in half lengthwise. These pieces of lumber are stacked vertically with the bottom end buried into the ground and the top end resting on top of the ground surface. The ties can be stacked directly against each other or spaced apart by gravel or soil fill material such as stones and sand.
The height of railroad tie retaining walls varies depending on how tall you want your wall to be and how much weight it needs to support. If you’re building a small garden bed for flowers or vegetables and don’t need much strength from your wall, then a simple 6-inch high wall made up of three tiers of two railroad ties each will work well enough. But if you’re building a driveway or pathway that people will walk on regularly, then you’ll need something
Railroad tie retaining walls are a great way to build a retaining wall. They are cheap, easy to install, and last for decades. But how long can you expect your railroad tie retaining wall to last?
Railroad ties are made from hardwood trees such as oak and pine. The heartwood of the tree is dense and durable which makes it perfect for building a retaining wall.
The lifespan of a railroad tie retaining wall depends on how often it rains in your area as well as how much debris falls into the trench behind the wall. In areas that receive less than 15 inches of rainfall per year and don’t experience large amounts of flooding or debris buildup, you can expect your railroad tie retaining wall to last at least 20 years before requiring any repairs or maintenance.
In areas with higher rainfall amounts or flooding, it may only take 10 years before you need to replace some sections of your railroad tie retaining wall with new wood (or other materials).
Railroad ties are a great option for retaining walls. They are easy to install and they are very strong.
Railroad ties can be used to build a retaining wall that is anywhere from 6 feet tall to 20 feet tall. The height of the wall will depend on how many railroad ties you use and how far apart they are placed.
The average lifespan of a railroad tie retaining wall is between 25 and 50 years, depending on the climate in your area.