Delaware Weigh Stations and Commercial Vehicle Compliance

Commercial vehicle enforcement in Delaware is primarily managed by the Delaware State Police (DSP) Truck Enforcement Unit in coordination with the Delaware Department of Transportation (DelDOT). Despite being the second smallest state in the union, Delaware maintains high-volume inspection points along the I-95 corridor and Route 13 to ensure safety and infrastructure preservation. Drivers entering the state must adhere to weight limits defined in Title 21, Chapter 45 of the Delaware Code, which establishes a maximum gross vehicle weight of 80,000 pounds for five-axle combinations on interstate highways. Operating through the Mid-Atlantic requires precision to avoid costly delays at the scales. DispatchTool helps carriers manage these requirements by providing truck-safe routing that accounts for Delaware’s specific weight restrictions on secondary roads and bridge clearances. Dispatchers can use the platform to monitor vehicle progress in real-time, ensuring drivers are on the correct path to designated inspection sites or utilizing approved bypass routes. Create a DispatchTool account to streamline your Mid-Atlantic routing and compliance documentation.

Primary Weigh Station Locations in Delaware

Delaware operates two primary permanent weigh stations. The most active site is located on I-95 in Newark, situated between the Maryland state line and the North Delaware interchange near mile marker 0.5. This facility is equipped with static scales and is often supplemented by mobile units. The second major site is on US-13 (Dupont Highway) in Blackbird, serving north-south traffic between Dover and Wilmington. DelDOT also utilizes several smaller roadside pull-offs and rest areas for mobile enforcement. These mobile units use portable scales to monitor traffic on secondary routes like US-301 and DE-1, where heavy haulers may attempt to bypass interstate scales.

State Weight Limits and Bridge Laws

Under Title 21 of the Delaware Code, the maximum weight for any single axle is 20,000 pounds, and a tandem axle is limited to 34,000 pounds. For vehicles operating on non-interstate highways, the state allows a 10% tolerance for certain commodities, but this does not apply to the interstate system. The Delaware Bridge Formula is strictly enforced, especially on older spans in the Wilmington area. Vehicles exceeding 80,000 pounds gross weight or standard dimensions must obtain an Oversize/Overweight (OS/OW) permit through the DelDOT Motor Carrier Safety Assistance Program (MCSAP) office. Fines for weight violations start at approximately $0.02 per pound over the limit and scale up to $0.05 per pound for significant infractions.

Bypass Technology and PrePass Availability

Delaware participates in the PrePass weigh station bypass system at its permanent facilities. Commercial vehicles with a high Safety Measurement System (SMS) score from the FMCSA are eligible for a green light bypass signal, allowing them to remain in the travel lanes. The I-95 Newark scale is fully integrated with Weigh-in-Motion (WIM) sensors located approximately one-half mile before the station. These sensors measure the vehicle's weight at highway speeds. If the WIM data and carrier credentials meet Delaware State Police criteria, the driver is cleared to bypass, saving an estimated 5 minutes of fuel and drive time per occurrence.

Safety Inspections and CVSA Decals

The Delaware State Police Truck Enforcement Unit conducts North American Standard Inspections (Levels I through V). During a Level I inspection, officers examine the driver’s CDL, medical examiner's certificate, and Record of Duty Status (RODS), alongside a thorough mechanical check of the vehicle's brakes, lights, and tires. If no critical violations are found, a CVSA decal is issued, which is generally valid for 90 days across all jurisdictions. In 2023, Delaware enforcement focused heavily on light violations and tire tread depth, which are among the most common reasons for being placed out-of-service (OOS) during roadside checks.

Fines and Penalties for Scale Violations

Bypassing an open weigh station in Delaware is a moving violation that can lead to significant penalties. Under Delaware Code § 4503, any driver who fails to stop at a command from a police officer or signs directing them to a scale may be fined between $250 and $500 for a first offense. Subsequent offenses within 12 months carry higher fines and potential suspension of operating privileges within the state. Additionally, if a vehicle is found to be overweight, the officer may require the driver to shift the load or offload excess weight on-site before the vehicle is permitted to move, resulting in expensive towing or labor costs.

Special Requirements for the Delaware Memorial Bridge

The Delaware Memorial Bridge, operated by the Delaware River and Bay Authority (DRBA), has its own set of strict regulations for commercial traffic. While not a traditional weigh station, the bridge authority monitors axle weights for toll classification and structural safety. Hazards and high-wind restrictions are common; vehicles over 80,000 pounds or those carrying hazardous materials (HazMat) must often coordinate with bridge police for escort or specific lane assignments. The toll for a 5-axle tractor-trailer at the Delaware Memorial Bridge currently exceeds $35.00 for non-E-ZPass users, making weight accuracy critical for proper tolling.

Sources

Delaware Code Title 21 (2024) — https://delcode.delaware.gov/title21/c045/index.shtml DelDOT Motor Carrier Safety Assistance Program (2024) — https://deldot.gov/Business/mc/index.shtml FMCSA SAFER System (2024) — https://safer.fmcsa.dot.gov/

Frequently asked

Where is the I-95 weigh station in Delaware located?

The I-95 weigh station is located southbound at mile marker 0.5 in Newark, Delaware, near the Maryland border.

Does Delaware use PrePass?

Yes, Delaware uses PrePass at its permanent weigh stations on I-95 and US-13, allowing qualified carriers to bypass the scales.

What is the maximum weight for a tandem axle in Delaware?

The maximum weight for a tandem axle on Delaware highways is 34,000 pounds, consistent with federal Bridge Formula B.

What happens if I miss a weigh station in Delaware?

Missing an open weigh station can result in a fine of up to $500 and a mandatory inspection if you are pulled over by the Truck Enforcement Unit.

Are there weigh stations on DE-1?

While there are no permanent scales on DE-1, the Delaware State Police frequently use mobile units and portable scales at rest areas along this route.