Toolbox for Work Zone Barriers


Barriers Notes



Balsi Beam

Provides 30 feet of protected work space for workers. Box beams can be deployed on either side of the vehicle depending on the location of the work zone. The Balsi beam cannot be moved once the beam is deployed and has to retract the beam before moving on the roadway. Due to the large size of the tractor trailer ample space is needed to turn the truck around.

BarrierGuard 800

1000 feet can be set up in about 1 hour. There is a volume discount if more than 1 mile of barrier is purchased. Since anchoring is required for the barrier, the BarrierGuard 800 would be better suited for a longer duration work zone. Curved joints can be purchased for navigating curves on the roadway. The maximum curve is a 40 meter radius.

Concrete Reaction Tension System (CRTS)

Can be used with barrier transfer machine to move barrier up to two lanes at 10 mph. The CRTS is suitable for work zones where traffic considerations exist. The CRTS can be moved out 1 to 2 lanes of traffic when work is being conducted and then moved back to the shoulder to allow more lanes for peak traffic. This is ideal for a night only work zone where more lanes can be used by motorists during the day and construction can be resumed at night. The CRTS can be used as a freestanding barrier is 80 segments are placed upstream and downstream in lieu of the anchored configuration.

GPLINK Portable Barrier Railing

The GP Link barrier is useful where minimal deflection is needed along with narrow lane width. GP Link is very heavy and would be better suited for longer duration work zones.

K Rail

K-rail provides very high containment and low deflection. K-rail would be suitable for work zones that have minimal space for deflection and where high containment is needed. K-rail is very suitable for work zones on bridges because there is a minimal amount of room for work. Two differnt types of pin connections can be used. The deflection with the pin connection is 1.1 m. If bolts are used to connect the barriers together the deflection is then 1 m.

Safeguard Link System

Can be used as a link between PCB's for entrance into work zones. Can be towed on wheels. Cost displayed is for the pneumatic and manual barrier. The manual barirer only costs $15,362.00. 200 - 300 ft can be set up in 30 min. The quick installation time and ease of mobility make the Safeguard Link system suitable for short duration work zones.

Steel Reactive Tension System (SRTS)

Can be used with barrier transfer machine. The SRTS is suitable for the same places as the CRTS, but the steel frame makes the SRTS smaller. This makes the SRTS suitable for workzones where mobility is needed and minimal lane width is available. The SRTS can be used as a freestanding barrier is 80 segments are placed upstream and downstream in lieu of the anchored configuration.

Vulcan Barrier

Can be used as a median gate. Can be towed on wheels. Can follow curves up to six degrees per four meter segment. Due to it's low weight per segment and short length the deflection of this barrier is larger than other steel barriers. Due to the higher deflection this barrier should be used where larger deflections are acceptable.





The purpose of this site is to help plan Work Zones.

The basic idea is to present basic information about barriers and attentuators in a format that will allow quick comparisons in support of Work Zone planning. The primary sources of the information presented here are NCHRP 350 approval letters. The next steps in developing these pages are to improve the information presented and to review the presentation format. This will require practitioner input.

This site is hosted by AHMCT at UC Davis. The content of these pages reflects work in progress. Please send comments to ahmctWeb (at)