Single-Slope vs Jersey Barrier: Which for a Permanent UAE Median?

The call we get most often on median work starts the same way: “We need jersey barriers for the central reservation.” Fair enough, that is what most people call a concrete barrier. But when the job is a permanent median on a road that will be resurfaced two or three times over its life, the jersey is often the wrong profile, and nobody finds out until years later when the barrier is quietly under-performing.

By the end of this you will know when a single-slope barrier beats a jersey, what the constant-slope face actually buys you, and the sizes, grades, and cost to put in your spec.

What is a single-slope concrete barrier?

A single-slope barrier is a precast concrete traffic barrier with one constant sloping face, around 10 degrees off vertical, running the full height from the road surface to the top. There is no low near-vertical toe and no change of angle partway up. That single detail is the whole point of the profile.

We cast it as a 3.0m unit that stands 0.81m high on a 0.56m base, crash-tested to redirect an errant vehicle back into its lane rather than stop it dead. It does the same job as a jersey barrier. It just does it with a different face geometry, and that geometry behaves differently over the life of a road.

How is a single-slope different from a Jersey or F-shape?

The difference is the shape of the face a vehicle first touches. A jersey and an F-shape both use a two-angle face with a low, almost vertical toe near the road, then a steeper slope above it. A single-slope uses one angle all the way up. Same concrete, same reinforcement families, very different behaviour when the road level changes.

Here is how the three profiles we cast most compare on the things that matter for a median decision:

If your real question is jersey versus K-Rail versus F-type for a work zone, that is a separate decision and we walk through it in Jersey vs K-Rail vs F-Type. This guide is about the one profile that usually gets left out of that comparison, and the permanent-median job it is built for.

Why do permanent medians favour single-slope?

Because roads get resurfaced, and resurfacing quietly changes what a jersey barrier does. Every asphalt overlay raises the road surface by 40mm to 80mm. On a jersey, that overlay buries the low toe and pushes the effective contact point up into the steeper part of the face, which is not where the barrier was crash-tested to catch a wheel. Do it twice and the profile a car meets is no longer the profile that passed the test.

A single-slope barrier does not have this problem. Its face is the same angle from the road up, so an overlay simply makes the barrier a little shorter without changing the redirection geometry at all. The car meets the same slope it always would. This is exactly why the AASHTO Roadside Design Guide points to single-slope and constant-slope profiles for permanent installations on roads expected to be overlaid. It is a maintenance-life decision as much as a crash-performance one.

There is an honest trade-off here. A single-slope run costs about the same to buy but locks you into a permanent-median mindset. If the barrier line might move next year, you have bought the wrong flexibility. Match the profile to how long the barrier stays put.

When is a Jersey barrier still the right call?

When the barrier moves. For temporary diversions, work zones, and any run you expect to relocate, the jersey is almost always the better buy. It is our stock profile, it is what most UAE contractors already hold, and a diversion needs barriers this week, not on a cast-to-order lead time.

The jersey’s other advantage is redeployment. A work zone that shifts down the carriageway every fortnight is not being resurfaced under the barrier, so the overlay issue never arises, and the jersey’s fast lift-and-shift with standard lifting loops is worth more than the single-slope’s overlay tolerance. We also refurbish and re-supply jerseys at volume, which suits the churn of temporary works. For that side of the job, our jersey and road barriers are the default, and the connection and anchoring detail matters more than the profile.

What sizes, grades and weights do single-slope barriers come in?

We cast single-slope in two grades, both 3.0m long and 0.81m high on a 0.56m base, with the difference being the concrete and reinforcement rather than the shape:

The epoxy-coated rebar on the heavy-duty unit is the spec worth flagging for coastal and high-chloride sites in the UAE. Standard reinforcement is fine inland; near the coast, the epoxy coating buys you corrosion life that the extra concrete grade alone does not. Which crash containment level you actually need, from N2 for lower-speed roads up to H1 or H2 for heavy vehicles, is set by the road authority and the design speed, not by the profile. We cover how that classification works in barrier containment levels under EN 1317. The two frameworks you will see quoted are EN 1317 on European-spec UAE highways and AASHTO MASH on projects following US standards, where single-slope is most at home.

How much does a single-slope barrier cost in the UAE?

Concrete road barriers run roughly AED 150 to AED 850 per unit, supply only. A new single-slope unit sits in the upper part of that band because of its mass and reinforcement, and the M40 heavy-duty version with epoxy-coated rebar sits higher still. A single flat price from any supplier who has not asked your grade and quantity is a guess.

That figure is supply only. Crane delivery, setting, and any crash-performance documentation your consultant wants are quoted separately, because they depend on your site far more than the barrier does. For a full breakdown of what moves the number, our jersey barrier price guide applies to the single-slope line as well, since both come off the same production and pricing basis.

Frequently asked questions

What is a single-slope concrete barrier? A precast concrete traffic barrier with one constant sloping face, typically around 10 degrees, from the road up to the top. Unlike a Jersey barrier’s two-angle face and low vertical toe, the single slope keeps the same redirection geometry even after the road is resurfaced and the effective barrier height drops.

Is a single-slope barrier better than a Jersey barrier? For a permanent median that will be resurfaced over its life, yes. The single-slope face tolerates asphalt overlays without changing how a vehicle is redirected. For temporary work zones and diversions that get moved often, a Jersey is usually the better pick because it is the stock item and redeploys fast.

What sizes and weights do single-slope barriers come in? Our standard unit is 3.0m long, 0.81m high, on a 0.56m base, weighing 2,600 to 2,800 kg in M35 concrete with 16mm reinforcement. The heavy-duty version steps up to M40 concrete, 20mm epoxy-coated rebar, and 2,800 to 3,000 kg for heavy-vehicle areas.

What crash standard applies to single-slope barriers? Two frameworks apply in the UAE. AASHTO MASH is the US test standard where single-slope profiles are most common, and EN 1317 is the European road-restraint standard used on many UAE highway specs. The containment level required, from N2 up to H2 or higher, is set by the road authority, not by the profile alone.

How much does a single-slope barrier cost in the UAE? Concrete road barriers run roughly AED 150 to AED 850 per unit supply-only. A new single-slope unit sits in the upper part of that band, and an M40 heavy-duty version with epoxy-coated rebar sits higher. Profile, grade, quantity, finish, and crane delivery all move the final number.

Get the right barrier profile quoted

Tell us whether the run is permanent or temporary, the road’s design speed and any containment level in the spec, the length you need to cover, your delivery emirate, and whether the site is coastal. That is enough for us to recommend single-slope or jersey, confirm the grade, and quote supply and crane logistics without a round of back-and-forth.

Send your barrier requirements for a quote →