Hill & Smith Inc. specializes in innovative barrier solutions for roads, highways, and bridges. Hill & Smith manufactures and supplies the nation’s leading steel barrier system, Zoneguard®. We are dedicated to providing positive protection to America’s drivers and road workers.


Since its introduction to the highway safety industry in 2008, the Zoneguard steel barrier system has become the most widely used temporary steel barrier in the country, and its many safety and money-saving benefits have been realized by DOT’s and contractors throughout the US.

Designed to protect highway travelers, as well as road and construction crews, Zoneguard offers the maximum safety requirements, as it meets NCHRP 350 and MASH crash test standards.

Temporary concrete barrier systems are costly, heavy to transport and handle, time-consuming and do not provide the energy-absorbing capabilities of Zoneguard.

Today’s contractors, engineers and DOT’s have a responsibility to provide the upmost safety to the driving public, while meeting tight budgets and timelines.

Zoneguard provides a cost-effective and efficient barrier solution and is available nationwide for rent or purchase.

Features of Zoneguard®

Here are a few of the features of using our product.



Made of steel 100% melted and manufactured in the USA, Zoneguard can withstand nuisance impacts and regular movements with little to no visible wear-and-tear, unlike concrete barrier, which can experience chipping/cracking/spalling during installation, relocation and storing.

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Zoneguard has been extensively tested and has been accepted by the FHWA as meeting NCHRP 350 TL-3 & TL-4 and MASH TL-3. Zoneguard’s rigid cross-section,and low center of gravity enable deflections which are comparable to heavier temporary concrete barriers.

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At 62 lbs per foot, Zoneguard weighs approximately 85% less than concrete barrier. Its light weight configuration allows for 750 linear feet of Zoneguard to be hauled on one truck and up to 1,500 linear feet to be installed in one hour, which will save you a ton of money on trucking and labor!

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Zoneguard is available for rent and purchase. Interested in getting pricing? Contact us today.