MASH Test 3-11 of the W-Beam Guardrail on Low-Fill Box Culvert (405160-23-2)

The primary objective of this study was to test and evaluate a guardrail design with standard post spacing for use across low-fill box culverts in accordance with MASH TL-3. A second objective of this study, was to develop a W 6x9 post with welded base plate detail for use with an epoxy anchoring system that would simplify installation. The crash test performed on the W-Beam Guardrail on Low-Fill Box Culvert was in accordance with test 3-11 MASH, which involves the 2270P vehicle (a 5000lb (1/2 ton) Quad Cab Pickup). Included in this report are the details of the installation used in the crash testing, details of the full-scale crash testing, and evaluation of the crash test. The W-Beam Guardrail on Low-Fill Box Culvert performed acceptably according to the specifications for MASH test 3-11.