Are plastic Jersey barriers MASH-rated?

Most plastic Jersey barriers are rated TL-1 or TL-2 (suitable up to 45 mph). A few specific reinforced-plastic models carry TL-3 ratings, but they are heavier and pricier than baseline plastic and still less performant than concrete in repeated impact scenarios.

Can I use plastic Jersey barriers on the NJ Turnpike?

No. NJTA and Interstate work zones require MASH TL-3 minimum, which in practice means concrete Jersey or steel guardrail. Plastic is acceptable on access ramps, low-speed staging areas, and pedestrian channels adjacent to the work zone.

How fast can a two-person crew deploy plastic Jersey barriers?

About 100 ft of linked plastic Jersey per 30 minutes once the water source is connected. Filling the barriers (300-500 gallons per section) is the bottleneck, not the placement.

How heavy is a concrete Jersey barrier?

A standard 10 ft concrete Jersey barrier weighs about 4,000-5,000 lb. Heavier "F-shape" or 20 ft sections push 8,000-10,000 lb. Always confirm the weight before scheduling delivery - your boom truck has to pick the heaviest single section.

Do plastic Jersey barriers leak?

Quality barriers from a reputable manufacturer hold water for the duration of a typical project (months) without significant loss. UV-degraded older barriers can crack and seep. Inspect any used plastic Jersey before deploy - cracks are visible by eye.

Can I fill plastic Jersey barriers with sand instead of water?

Some manufacturers approve sand fill; others do not. Sand-filled barriers are heavier (about 1.5x water) but cannot be drained for redeployment - you have to dig them out. Water is the default for projects that move.

Plastic Jersey Barriers vs Concrete: Which One You Need

A plastic Jersey barrier is a hollow polyethylene shell shaped like the classic concrete Jersey wall, filled on-site with water (700-1,200 lb per section) for ballast. A concrete Jersey barrier is solid 4,000+ lb concrete, MASH-rated for vehicle crash redirection. They look similar from 50 ft away but they do very different jobs. Pick the right one and the project finishes; pick the wrong one and you either over-spend or under-protect.

Quick decision: which one for which job

Job	Plastic	Concrete
Pedestrian channel along ≤25 mph road	Yes - faster, cheaper	Overkill
Lane separation on 35-45 mph road	Acceptable with cap rail	Better
Lane separation on 50+ mph (Interstate, NJTA, GSP)	NOT acceptable	Required (MASH TL-3+)
Construction site perimeter	Yes	Yes (overkill)
Event perimeter / VIP staging	Yes - graphics-friendly	Yes - imposing
Long-term highway median (months/years)	Will degrade	Yes

Plastic Jersey barriers - the case for them

A plastic Jersey barrier ships empty (about 80-150 lb per section), arrives on a flatbed pallet, and gets filled on-site from a water truck or hydrant. Once filled it weighs 700-1,200 lb depending on size, anchored by gravity. Empties drain in minutes for redeployment. Comes in highway-orange, white, yellow, and (less commonly) custom colors.

Strengths: fast deploy, cheap to ship, redeployable, links end-to-end, easy to graphics-wrap for events.
Weaknesses: low MASH rating (most are TL-1 or TL-2 only - good for ≤45 mph). UV degradation over years. Will move on impact - not a permanent vehicle barrier.
Typical use: low-speed lane shifts, pedestrian channels, construction-site perimeters, event staging, parking-lot work.

Concrete Jersey barriers - the case for them

Concrete Jersey barriers are precast 10-20 ft sections weighing 4,000-9,000 lb each. Crash-tested under MASH (Manual for Assessing Safety Hardware) at TL-3 or TL-4 - meaning they will redirect a 5,000 lb pickup at 60 mph. Required on Interstates, the NJ Turnpike, the Garden State Parkway, and any other 50+ mph roadway under FHWA jurisdiction.

Strengths: crash-rated for high-speed traffic. Survives multiple impacts. 30+ year service life.
Weaknesses: expensive to transport (one section per truck). Requires a knuckle-boom or crane to set. Does not redeploy quickly.
Typical use: highway lane separations, freeway median work zones, long-term construction barriers, blast-protection setups.

Crash rating matters more than appearance

A plastic Jersey barrier looks like a concrete Jersey barrier but does not perform like one in a crash. The MASH rating tells you the test condition the barrier survived:

TL-1: tested at 30 mph. Pedestrian protection only.
TL-2: tested at 45 mph. Suitable for arterial streets.
TL-3: tested at 62 mph. Standard for state routes and Interstates.
TL-4: tested at 56 mph with a single-unit truck. Used where heavy vehicles dominate.

Most plastic Jersey barriers are rated TL-1 or TL-2. Some manufacturers offer TL-3 plastic barriers with steel reinforcement, but these cost more and weigh more than basic plastic. If your spec says TL-3, default to concrete unless you have specific TL-3 plastic that has been MASH-tested in your configuration.

Cost comparison

Per linear foot, plastic Jersey is dramatically cheaper to acquire AND to deploy. Concrete is dramatically cheaper to operate over a multi-year horizon. The crossover point is usually 12-18 months of continuous use.

Spec	Plastic 6 ft	Concrete 10 ft
Buy price (each)	$180-$320	$650-$1,100
Weight empty / set	80-150 lb	4,000-6,000 lb
Deploy crew + equipment	2 people + water source	Crane / boom truck
Time per 100 ft	~30 min	~2 hr
Service life	5-8 yr	30+ yr
MASH rating (typical)	TL-1 / TL-2	TL-3 / TL-4

Linking sections together

Both types interlock end-to-end. Plastic uses a pin-and-socket or J-hook connector; concrete uses a steel pin-and-loop or shear-key cast into the section. The connection matters because an unlinked barrier line is a series of independent obstacles, not a continuous redirective wall - a vehicle hitting an unlinked plastic Jersey can shove a single section sideways and break through.

Hybrid setups for ramps and tapers

A common pattern on NJDOT projects: concrete Jersey on the high-speed mainline, plastic Jersey for the merge taper and ramp closures where the line will move every shift. Cones and Type III barricades transition between the two. See our water-filled barriers buying guide for the plastic-side details.

Where to source in NJ

We stock plastic water-fillable Jersey barriers in 4 ft and 6 ft sizes out of our Central NJ yard with same-day delivery. Concrete Jersey barriers are project-rented through partner yards; ask for a quote and we will coordinate the trucking and the boom-truck setting. Browse the barriers inventory or get a project quote if you want both types coordinated for a single job.