TL-3 Multifunctional Barrier (Shield Pedestrians, Bicyclists, and other Vulnerable users from Motor Vehicles)

Report Number(s): 612541, NCHRP Report 1116

Description: The length of the test installation was 185 ft 7½ in. and consisted of a traffic rail and rub rail on the traffic side and pedestrian rails on the field side. Each end of the installation was anchored with a steel post W-beam cable anchorage system that was approximately 9 ft 4 in. long. The traffic rail was constructed of an HSS with dimensions of 12 × 6 × ¼ in. with its top located 32 in. above grade. The rub rail was an HSS with dimensions of 4 × 4 × ¼ in. with its top located 13 in. above grade. The rails were supported by W6 × 8.5 posts spaced at 66 in. on center. Two field side handrails were fabricated of HSS tubing 1.90 in. in diameter by 0.145 in. thick. Their centers were located 35 in. and 41 in. above grade. A cane rail, also on the field side, was fabricated of 11 gauge 4-in.-wide plate with its bottom edge 1 in. above grade. The posts were set in a 19-in.-wide, 4-in.-thick continuous area of low-strength grout with 24-in.-wide, 4-in.-thick concrete slabs on both sides. The traffic side faces of the posts were 4 in. from the joint between the concrete and grout. Figure 73 presents overall information on the multifunctional barrier, and Figure 74 provides photographs of the installation. For Crash Test 3-20 & 3-21 for the Transition: The length of the test installation was 255 ft 8 in. The upstream end of the installation had a 79-ft section of guardrail and terminated at the upstream end with a steel post W-beam cable anchorage system. One section of Thrie beam guardrail was connected to the upstream end of the multifunctional rail, and a nonsymmetrical Thrie beam to W-beam connection was used to attach the upstream end of the Thrie beam to a W-beam guardrail. The downstream end of the installation was anchored with a steel post W-beam cable anchorage system that was approximately 9 ft 4 in. long. The multifunctional barrier was constructed of an HSS with dimensions of 12 × 6 × ¼ in. with its top located 32 in. above grade. The rub rail was an HSS with dimensions of 4 × 4 × ¼ in. with its top located 13 in. above grade. The rails were supported by W6 × 8.5 posts spaced at 66 in. on center. The field side handrails of the multifunctional barrier were fabricated of HSS 1.90-in.-diameter × 0.145-in.-thick tubing. Their centers were located 35 in. and 41 in. above grade, respectively. A cane rail, also on the field side, was fabricated from an 11-gauge 4-in.-wide plate with its bottom edge 1 in. above grade. The posts of the multifunctional barrier were set in a 19-in.-wide, 4-in.-thick continuous band of grout, with 24-in.-wide, 4-in.-thick concrete slabs on both sides. The traffic side faces of the posts were 4 in. from the joint between the concrete and grout.

Test Level: 3

MASH Test Number: 3-10, 3-11, 3-20, 3-21

Proprietary/Non-proprietary: Non-proprietary

Pass/Fail: Pass

Evaluation: Full-Scale Crash Testing

Sponsor: AASHTO