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Crash Testing and Evaluation of the HDOT 42-in. Tall, Aesthetic Concrete Bridge Rail: MASH Test Designation Nos. 3-10 and 3-11




Ronald Faller, Bob Bielenberg, Erin Urbank, Nathan Dowler




This report documents two full-scale crash tests conducted in support of a study to investigate the safety performance of the Hawaii Department of Transportation's (HDOT's) 42-in. Tall, Aesthetic Concrete Bridge Rail system. The barrier system was 88 ft long and consisted of two 11-ft long concrete parapets and three 22-ft long concrete parapets anchored to the concrete tarmac. Expansion joints between each segment consisted of 24-in. long, No. 8 ASTM A615 Grade 60 steel bars cast into the concrete and inserted into a PVC pipe on the upstream side of the expansion joint. Test nos. H42BR-1 and H42BR-2 were conducted according to Manual for Assessing Safety Hardware 2016 (MASH 2016) criteria using Test-Level 3 (TL-3) test designation nos. 3-10 and 3-11, respectively. In test no. H42BR-1, an 1100C small car impacted the barrier at a speed of 63.2 mph and an angle of 24.9 degrees. In test no. H42BR-2, a 2270P quad cab pickup truck impacted the barrier at a speed of 62.7 mph and an angle of 25.1 degrees. In both tests, the bridge rail successfully contained and redirected the vehicle, and it did not penetrate or show potential for debris to penetrate the occupant compartment. All occupant risk measurements were below the maximum thresholds. Thus, test nos. H42BR-1 and H42BR-2 successfully met the TL-3 safety performance criteria defined in MASH 2016.


Highway Safety, Crash Test, Roadside Appurtenances, Compliance Test, MASH 2016, Aesthetic, Bridge Rail, Concrete Parapet

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