MDTA Chesapeake Bay Bridge Steel Rail System

Report Number(s): TR 612861-02

Description: The system consists of four 40-ft 8-inch long and one 42-3/16-inch long steel parapet assembly sections, which are supported and anchored to the bridge floor system by nine floor beam assemblies, evenly spaced at 20-ft-5-inches. The parapet assembly is anchored to the floor beam 7½ inches below grade and extends up to 32 inches above grade. A steel rail system is mounted on top of the parapet; it consists of an 8-inch x 4¥8-inch elliptical tube and intermediate short posts, with the top of the tube located 50 inches above grade. Both the parapet and rail contain 2-inch-wide longitudinal expansion joints between each assembly section.

Test Level: 5

Eligibility Letter: B-359

Barrier Type: n/a

MASH Test Number: 5-10, 5-11, 5-12

Proprietary/Non-proprietary: Non-proprietary

Pass/Fail: Pass

Evaluation: Full-Scale Crash Testing

Sponsor: Maryland Transportation Authority