Development of a MASH TL-3 Approach Guardrail Transition to a MASH TL-4 Steel Bridge Rail

Report Number(s): TRP-03-411-20

Description: A MASH Test Level 3 approach guardrail transition (AGT) was designed to connect the Midwest Guardrail System (MGS) to a MASH TL-4 steel-post, steel-tube, bridge rail, Type IL-OH. Two connection concepts were evaluated using the LS-DYNA finite element analysis computer software.MASH test designation nos. 3-20 and 3-21 in the impact direction from the bridge rail to the thrie-beam AGT were determined to be non-critical.

Test Level: 3

System Type: Guardrail to Bridge Rail

MASH Test Number: 3-20, 3-21

Proprietary/Non-proprietary: Non-proprietary

Pass/Fail: Pass

Evaluation: Full-Scale Crash Testing

Sponsor: Midwest Roadside Safety Facility

Test Article Description

Transition Type: Thrie Beam

Nested: Yes

Rubrail: No

Rubrail Nested: No

Height: 34"

Curb Present: No