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.

Benefits of Zoneguard®

Here are a few of the benefits 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.

View Portfolio


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.

View Portfolio


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!

View Portfolio

Connect With Us

Request Quote

Request A Quote

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