MASH TL-3 Evaluation of PA 3-Rail Bridge Barrier

Report Number(s): 610481

Description: The test installation consisted of a steel reinforced concrete deck and curb, with HSS 4×3×3/16-inch steel rails supported by steel posts anchored to the top of the curb. The deck and curb were each 78 ft 7¾ inches long. The 11-inch-thick deck was cantilevered 72 inches outward from its support wall, with the field side of the 18- inch-wide curb flush with the field side of the deck. The curb was 10½ inches tall, and a 2½ inch thick lift of TxDOT Type D asphalt was applied to the top of the concrete deck, which brought the curbs effective height to 8 inches above grade. The three rails were mounted to the posts via wood blockouts, and oriented such that they were 4 inches tall, with their respective top surfaces located 15⅜ inches, 23 inches, and 30⅝ inches above grade. The 13 posts, were spaced on 75-inch centers, beginning at 19¾ inches from the upstream end of the deck. Between posts 3 and 4 and between posts 7 and 8, there were ½-inch expansion joints in the deck and curb and 1-inch-long sleeved joints in the rails.

Test Level: 3

Eligibility Letter: B-367

Barrier Type: Steel Post and Beam

MASH Test Number: 3-11, 3-10

Proprietary/Non-proprietary: Proprietary

Pass/Fail: Pass

Evaluation: Full-Scale Crash Testing

Sponsor: Gannett Fleming