A Study of Acceptable Sidewalk Heights and Width (614091/ T4541-DV)

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Final Report Link: A Study of Acceptable Sidewalk Heights and Width


TTI Research Supervisor:
Akram Abu-Odeh
Texas A&M Transportation Institute
Texas A&M University System
TAMU 3135
College Station, Texas 77843-3135
(979) 317-2682
[email protected]
Pooled Fund Technical Representative:
Taya Retterer, P.E. 
TxDOT Bridge Standards Engineer
Bridge Division
Texas Department of Transportation 125 E 11th ST.
Austin, TX 78701
(512) 416-2719
[email protected]


The objective of this research is to provide guidance for bridge parapet placement on sidewalks, considering a maximum traversable curb height. The study focused on Test Level 2 (TL 2) impact conditions, as defined in the American Association of State Highway and Transportation Officials (AASHTO) Manual for Assessing Safety Hardware, Second Edition (MASH). Researchers performed tests on an 8-inch curb to determine the vehicular trajectory profiles under MASH TL-2 conditions. They then calibrated the finite element (FE) vehicle models using the trajectory testing results and Caltrans impact test report, calibrating the models to capture vehicular behavior reasonably. The research team performed parametric simulations with various parapet heights and locations incorporating different curb parameters. They developed placement guidelines for 8-inch- tall curbs under MASH TL-2 impact conditions.


Updated 2024/17/04 (April 17)