Jackknifed Semi-Truck Crash Blocks Five Lanes on I-95 South in Delray Beach

A crash involving a jackknifed semi-truck blocked five lanes of southbound Interstate 95 in Palm Beach County Thursday morning, causing significant traffic delays near Delray Beach.

The September 17, 2026 crash was reported near Exit 52 at Atlantic Avenue.

Images from the scene showed a semi-truck jackknifed across portions of I-95, with traffic backed up behind the crash. Emergency crews responded to the scene.

Authorities had not immediately reported what caused the truck to jackknife or whether anyone was injured.

What Happened on I-95 South Near Atlantic Avenue?

The crash occurred Thursday morning in the southbound lanes of I-95 near the Atlantic Avenue exit in Delray Beach.

Five lanes were reportedly blocked following the collision.

Images from the scene showed the semi-truck positioned across the interstate, significantly restricting southbound traffic.

Emergency crews were at the scene, but initial reports did not provide information about other vehicles that may have been involved.

The circumstances leading up to the crash remain unclear.

What Causes a Semi-Truck to Jackknife?

A jackknife occurs when a tractor and its trailer move out of alignment, causing the trailer to swing toward the tractor rather than continuing directly behind it.

Jackknifing can happen under many different circumstances. Investigators may examine factors such as sudden braking, loss of traction, vehicle speed, steering inputs, roadway conditions, equipment problems or the actions of surrounding vehicles.

The presence of a jackknifed truck does not, by itself, establish why the driver lost control or that the truck driver was negligent.

No cause has been reported in Thursday’s I-95 crash.

Investigators May Examine the Truck’s Speed and Braking

Investigators may attempt to determine how fast the semi-truck was traveling and whether the driver braked immediately before the trailer began to swing.

Florida Statute § 316.183 generally requires motorists to travel at a reasonable and prudent speed based on existing conditions.

The available report does not indicate that the truck was speeding.

Electronic information from the truck may potentially help investigators reconstruct its speed, braking and other movements before the crash.

Roadway and Traffic Conditions Could Also Be Relevant

Because the crash occurred on I-95 during the morning travel period, investigators may examine surrounding traffic conditions.

Sudden congestion can require commercial truck drivers to slow or stop quickly. Because large trucks require considerably more space to stop than smaller passenger vehicles, investigators may examine whether traffic slowed before the crash and how the truck responded.

Roadway surface conditions and available traction could also become relevant when investigating a jackknife.

There is currently no information indicating that congestion, weather or roadway conditions caused this crash.

Could Mechanical Problems Cause a Truck to Jackknife?

Mechanical problems are another potential area investigators may examine.

Depending on the circumstances, an inspection could evaluate the truck’s braking system, tires, suspension, steering components and tractor-trailer connections.

Maintenance and inspection records could also help determine whether the truck had any known mechanical problems before the crash.

There is no evidence at this time that a mechanical failure contributed to Thursday’s collision.

Cargo and Trailer Loading May Be Examined

How a trailer is loaded can sometimes affect a commercial truck’s stability.

If relevant to the investigation, authorities may examine the type and weight of the cargo, how it was distributed inside the trailer and whether it was properly secured.

Improperly distributed or shifting cargo can affect how a trailer responds during braking or sudden steering maneuvers.

However, the available report does not identify what the semi-truck was carrying or suggest that cargo contributed to the jackknife.

Commercial Truck Records Can Provide Important Evidence

If investigators need to determine why the semi-truck jackknifed, records maintained by the driver, motor carrier or truck owner may become important.

Potential evidence may include:

• Electronic logging device records
• Engine control module or other electronic vehicle data
• GPS and dispatch information
• Driver hours-of-service records
• Pre-trip and post-trip inspection reports
• Maintenance and repair records
• Brake and tire inspection records
• Cargo and loading documentation, when relevant
• Dash camera and traffic camera footage
• Crash-scene photographs and measurements
• Witness statements
• Vehicle damage and final resting positions

These records can help investigators reconstruct what happened in the seconds and hours before a commercial truck crash.

Could the Trucking Company Be Liable?

The involvement of a semi-truck does not automatically make the driver or trucking company responsible for a crash.

Liability depends on evidence showing what caused the collision.

If evidence establishes that a commercial driver negligently caused a crash while working within the course and scope of employment, the driver’s employer or motor carrier may potentially become relevant to a civil claim.

Separate issues involving vehicle maintenance, driver qualification, training or supervision could also arise if supported by the evidence.

Other parties could potentially bear responsibility if another vehicle caused the truck driver to take evasive action or if evidence identifies a mechanical or roadway-related cause.

At this stage, there is not enough information to determine responsibility.

What If Other Vehicles Were Involved?

Initial reporting does not state whether the semi-truck collided with other vehicles.

In a heavily traveled interstate crash, investigators may need to determine whether another motorist’s actions preceded the jackknife or whether vehicles became involved after the truck lost control.

Florida Statute § 768.81 may become relevant if evidence establishes that multiple parties contributed to a collision and resulting injuries.

Determining the sequence of events is particularly important before assigning responsibility in a multi-vehicle commercial truck crash.

Legal Options After an I-95 Truck Crash

If anyone was injured in the crash, potential claims would depend on what investigators determine caused the collision and which parties were involved.

Florida motorists may have access to applicable personal injury protection benefits under Florida Statute § 627.736. Additional personal injury claims may be available when evidence establishes that another party’s negligence caused serious injuries.

Commercial truck crashes can involve additional insurance policies and potentially responsible parties, making preservation of evidence especially important.

Because the initial report did not confirm any injuries, it is too early to determine whether injury claims will arise from Thursday’s crash.

Investigation Into the Delray Beach Truck Crash Continues

Authorities are investigating the September 17 crash involving a jackknifed semi-truck on southbound I-95 near Exit 52 at Atlantic Avenue in Palm Beach County.

The crash blocked five lanes and caused significant traffic backups Thursday morning. Emergency crews responded to the scene.

Initial reports did not identify what caused the semi-truck to jackknife or confirm whether anyone was injured.

Drivers traveling through the Delray Beach area were advised to use caution and expect delays while crews responded to the crash.