Load Locks vs Shoring Beams: Differences & When to Use Each
Load lock bars and shoring beams look similar — both are horizontal bars that span the width of a dry van trailer — but they serve different purposes and have very different weight capacities. A standard load lock bar holds 100-250 pounds of horizontal force. A heavy-duty shoring beam can support 2,000-4,000 pounds. Confusing the two can mean inadequate securement for heavy freight or unnecessary expense for light loads. This guide explains the differences, compares specifications, and tells you exactly when to use each.
100-250 lbs
Load Lock Capacity
2,000-4,000 lbs
Shoring Beam Capacity
10-20x
Strength Difference
3-5x
Cost Difference
O Trucking Editorial Team
Trucking Industry Experts
Fact-Checked by O Trucking Dispatch Team
5+ years coordinating dry van freight securement, specifying load lock bars and shoring beams for LTL and FTL operations, and managing cargo claim prevention programs
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This article was written by the O Trucking editorial team with 9+ years of combined trucking industry experience. Learn more about us.
O TruckingLoad Locks vs Shoring Beams: Differences & When to Use Each (2026)
Side-by-Side Comparison
The following table compares load lock bars and shoring beams across all key specifications. The most important difference is weight capacity: shoring beams are industrial-grade bracing tools designed for heavy loads, while load locks are friction-based restraints for light to medium freight.
| Specification | Load Lock Bars | Shoring Beams |
|---|---|---|
| Weight capacity | 100-250 lbs | 2,000-4,000 lbs |
| Material | Steel or aluminum tube | Structural steel or aluminum |
| Weight per unit | 5-8 lbs | 15-35 lbs |
| Adjustment mechanism | Spring or ratchet | Jack bar, ratchet, or pin |
| Installation time | 30-90 seconds | 2-5 minutes |
| Requires track/pockets | No (friction hold) | Yes (track or beam pockets) |
| Cross-section shape | Round tube (1-1.5") | Square/rectangular (2-4") |
| Cost per unit | $20-$80 | $80-$300 |
| Lifespan | 6-24 months | 3-10 years |
| Can create deck/shelf | No | Yes (with plywood decking) |
| Best for | Light freight, quick installs | Heavy freight, LTL double-decking |
What Is a Shoring Beam?
A shoring beam (also called a cargo beam, decking beam, or bulkhead beam) is a heavy-duty structural bar that spans the width of a trailer and locks into pre-installed mounting points on the interior sidewalls. Unlike load lock bars that rely on spring friction against smooth walls, shoring beams seat into metal pockets, tracks, or keyhole slots that are permanently welded or bolted to the trailer walls.
The structural design of a shoring beam is fundamentally different from a load lock bar. Shoring beams use square or rectangular cross-sections (typically 2x4 inches or 2x6 inches) made from structural steel or extruded aluminum. This gives them enormous bending strength compared to the thin round tubes used in load lock bars. A quality shoring beam rated at 3,000 lbs can support that weight without bending, deflecting, or failing — the mounting pockets on the trailer walls carry the force into the trailer structure itself.
Shoring beams are most commonly found in LTL (less than truckload) operations and dedicated fleet trailers. LTL carriers like FedEx Freight, XPO Logistics, Estes Express, and Old Dominion use shoring beams extensively because they haul mixed freight from multiple shippers in the same trailer. The beams create physical barriers between shipments and provide the structural support needed to double-deck lighter freight on top of heavier freight.
Most shoring beams are adjustable in width using a jack bar mechanism (similar to a car jack) or a pin-and-hole system. You extend the beam to the approximate trailer width, lock the pin into the nearest hole, and then use the jack mechanism to fine-tune the fit until the beam seats solidly in the wall pockets on both sides.
What Is a Load Lock Bar?
A load lock bar is a telescoping metal pole with rubber end caps that presses outward against the interior sidewalls of a trailer. The rubber feet grip the wall surface through friction, creating a barrier that prevents cargo from sliding past the bar. Load locks require no permanent mounting hardware — they work in any trailer with flat interior walls.
The holding capacity of a load lock bar is limited by the friction between the rubber feet and the trailer wall. Spring-loaded bars typically generate 100-150 lbs of friction force, while ratchet-style bars reach 150-250 lbs. This friction-based design makes load locks fast and easy to install but fundamentally limits their strength.
Load locks are the standard securement tool for truckload (TL) dry van drivers who haul full trailer loads or partial loads of moderate-weight freight. They are inexpensive ($20-$80 each), lightweight (5-8 lbs), and take 30-90 seconds to install. For the vast majority of palletized consumer goods, retail merchandise, and lightweight industrial products, load locks provide adequate supplemental securement.
Weight Capacity: The Critical Difference
The weight capacity gap between load locks and shoring beams is enormous — and understanding this gap is essential for choosing the right tool. Here is a practical breakdown:
Load Lock: 100-250 lbs of Horizontal Force
This is the friction force the bar exerts against the walls. If a 1,500-pound pallet slides forward into the bar during a hard brake, the bar will pop out of position because the pallet generates far more than 250 lbs of forward force (at 0.8g deceleration, a 1,500-lb pallet creates 1,200 lbs of forward force). Load locks are adequate for preventing light cargo drift during normal driving, not for bracing heavy freight during emergency stops.
Shoring Beam: 2,000-4,000 lbs of Structural Support
A shoring beam rated at 3,000 lbs can physically block a 3,000-pound pallet from sliding forward. The force transfers through the beam into the trailer wall mounting pockets, which are welded or bolted to the trailer structure. The beam does not rely on friction — it is a structural member that acts like a temporary wall. This is why LTL carriers use shoring beams to separate heavy shipments and double-deck freight.
Never Substitute a Load Lock for a Shoring Beam
Construction and Materials
The physical construction of these two tools reflects their different purposes:
| Feature | Load Lock Bar | Shoring Beam |
|---|---|---|
| Profile | Round tube, 1-1.5" diameter | Rectangular, 2x4" to 2x6" |
| Wall thickness | 0.05-0.08" (thin gauge) | 0.125-0.25" (heavy gauge) |
| End caps/feet | Rubber friction pads | Steel hooks or pocket tabs |
| Steel options | Mild steel, often painted | Structural steel, galvanized |
| Aluminum options | 6061-T6 tube (lightweight) | 6061-T6 or 6005 extrusion |
| Bending resistance | Low (bends under load) | High (structural rigidity) |
You can visually identify the difference instantly. A load lock bar is a thin round pole — approximately the diameter of a broomstick. A shoring beam is a heavy rectangular bar — more like a steel 2x4 or 2x6 lumber equivalent. If you pick up a shoring beam, you will immediately feel the weight difference: 15-35 lbs versus the 5-8 lbs of a load lock. That weight comes from the thicker metal and the structural profile that gives shoring beams their superior strength.
When to Use Shoring Beams
Shoring beams are the right choice in these situations:
LTL operations with mixed freight: When you haul multiple shipments in the same trailer, shoring beams create rigid barriers between shipments. This prevents one shipper's heavy freight from crushing another shipper's light freight. Every major LTL carrier uses shoring beams for this reason.
Double-decking freight: When you stack pallets two-high or create a second deck of lighter freight on top of heavier freight, shoring beams provide the structural support for the upper level. You install two or more beams at the same height, lay plywood across them, and load the upper deck. Load locks cannot support vertical weight — they would collapse instantly.
Heavy individual items: Machinery, engine blocks, equipment, and other single items weighing over 500 lbs need a shoring beam as a structural brace. The beam physically blocks the item from shifting forward and transfers the braking force into the trailer structure.
Temperature-sensitive cargo separation: In LTL trailers carrying mixed temperature requirements, shoring beams with insulated panels create thermal barriers between zones, keeping frozen goods away from ambient-temperature freight.
When to Use Load Lock Bars
Load lock bars are the better choice in these situations:
Truckload (TL) dry van operations: When hauling a single shipper's palletized freight in a standard dry van, load locks are fast, portable, and sufficient for most consumer goods and retail merchandise weighing under 300 lbs per pallet.
Trailers without beam pockets: Not all trailers have the mounting hardware for shoring beams. Standard dry van trailers used by truckload carriers often have smooth walls or logistics track that accepts load locks but not shoring beams. In these trailers, load locks are your primary bracing option.
Speed-critical loading/unloading: Load locks install in 30-90 seconds versus 2-5 minutes for shoring beams. When you make multiple stops per day and need to resecure quickly, load locks save significant time across a full day of deliveries.
Portable securement needs: Load locks are lightweight and portable — a driver can carry 10 bars without issue. Shoring beams at 15-35 lbs each are cumbersome and typically stay with the trailer rather than traveling with the driver.
Many Operations Use Both Tools Together
Cost and ROI Analysis
Shoring beams cost 3-5 times more than load lock bars upfront, but they last significantly longer and provide much greater cargo protection. Here is the full cost picture:
| Cost Factor | Load Lock Bars | Shoring Beams |
|---|---|---|
| Unit price | $20-$80 | $80-$300 |
| Typical quantity per trailer | 8-12 | 4-8 |
| Initial investment per trailer | $160-$960 | $320-$2,400 |
| Lifespan | 6-24 months | 3-10 years |
| Annual cost per trailer | $200-$960 | $50-$400 |
| Maintenance | Replace when springs fail | Inspect pins, check for bends |
On an annual cost basis, shoring beams can actually be cheaper than load locks because they last 3-10 years versus 6-24 months. A $200 shoring beam that lasts 5 years costs $40/year. A $30 load lock bar that lasts 12 months costs $30/year — but you need 8-12 of them ($240-$360/year) versus 4-8 shoring beams ($160-$320/year over their lifespan).
The real ROI calculation is in cargo claims prevention. The average cargo damage claim in trucking is $5,000-$25,000. One prevented claim pays for an entire trailer's worth of shoring beams or load lock bars many times over. Choose the tool that provides adequate securement for your specific freight — the cost difference between the two tools is negligible compared to the cost of a single cargo claim.
How Our Team Specifies Securement Equipment
At O Trucking LLC, we match the securement tool to the freight:
Freight weight determines the tool
When we receive load details from a shipper, we check the per-pallet weight and total load weight. For lightweight consumer goods under 300 lbs per pallet, we confirm load lock bars. For heavier freight or mixed-weight LTL loads, we confirm the trailer has shoring beams and that the driver knows how to install them correctly.
Trailer compatibility check
Not every trailer supports shoring beams. Before dispatching to a shipper that requires beams, we verify the assigned trailer has the correct mounting hardware — beam pockets, keyhole slots, or compatible track. If the trailer cannot accept beams, we either swap trailers or confirm alternative securement with the shipper.
Need a Dispatch Team That Knows Cargo Securement Equipment?
Our dispatchers match the right securement tool to every load — load locks for light freight, shoring beams for heavy cargo. Proper equipment means zero cargo claims.