Skip to main content

The Sentry II Water Cable Barrier is MASH Tested, Passed, and Eligible as for TL-3 longitudinal barrier applications.

Read Eligibility Letter

The Sentry II is intended as an alternative to cumbersome concrete barriers in a construction work zone. The Sentry II has been tested and passed all TL-3 light and heavy vehicle impacts at 62.5 mph (100 kph). Molded into each Sentry II are four (4) ⅜" (9.5 mm) diameter galvanized stranded steel cables. Multiple Sentry II's can be connected together using interlocking knuckles and a 1⅛" (30 mm) diameter galvanized steel T-Pin to form a barrier wall to protect impacting vehicles from entering on-coming traffic or a workzone. Each Sentry II module has in-molded stacking lugs for easy transport and storage.

The Sentry II is lighter than concrete median barriers and requires no anchors making it ideal for use on bridge decks.


TrafFix Sentry II Water-Cable Barrier schematic drawing
TrafFix Sentry II Water-Cable Barrier schematic drawing
Empty 215 lbs. (97 kg)
Filled 2,150 lbs (975 kg)
76" (193 cm)
22" (56 cm)
43" (109 cm)
Polyethylene Plastic
Orange or White


The Sentry II Water-Cable Barrier to be 75⅗" (1.9 m) long x 22½" (0.57 m) wide x 45⅘" (1.2 m) tall and molded from polyethylene. Sentry II Water-Cable Barrier to be MASH tested, passed and eligible for TL-3, 62.1 mph (100 km/h) longitudinal barrier applications. Individual wall (empty) shall weigh 215 lbs (97.5 kg) including internal cables and 2,150 lbs. (975.2 kg) when filled with water. Four ⅜" diameter stranded steel cables are molded into the wall to contain the impacting vehicle during an accident. Standard colors are orange/red and white, product may also be produced in other colors. Sentry II Water-Cable Barrier modules are connected together with galvanized steel T-pins passing through a double wall knuckle which minimizes breakage at hinge points. Sentry II Water-Cable Barrier shall pivot up to 15 degrees when connected. Sentry II Water-Cable Barrier to have one 8" (20.3 cm) diameter fill hole for quick filling and a twist lock cap for closure. Sentry II Water-Cable Barrier will have molded fork lift slots to provide easy movement. Drain plug to be centered on the module to protect against cracking or breaking and have course buttress threads for quick removal and insertion. Sentry II Water-Cable Barrier shall stack for easy movement and storage.