01626514

Component

https://doi.org/10.3141/2638-07

This project in Manitoba, Canada, developed a single-slope concrete barrier system with a height of 1,250 mm and a base width of no more than 600 mm. Configurations for bridge rail, roadside, and median barrier applications were developed and optimized to minimize installation costs while satisfying the AASHTO Manual for Assessing Safety Hardware (MASH) Test Level 5 performance standards. Additionally, a bridge deck was developed for the overhang portion of the deck supporting the bridge rail. To evaluate the new barrier system, a 45.7-m-long section of the bridge rail was constructed on a simulated bridge deck and subjected to a full-scale crash test according to MASH Test 5-12. During the test, the 36,000-kg vehicle was safely redirected with minimal roll to the cab and trailer. Damage to the barrier and deck was minor, consisting of concrete gouging, hairline cracks, and some spalling to the top of the barrier. Thus, the Manitoba constrained width tall wall was deemed crashworthy to MASH Test Level 5 standards.

01629806

17-04592

English

pp 55–64

2017

Transportation Research Record: Journal of the Transportation Research Board

9780309441803

Digital/other

Figures (4) ; Photos; References (19) ; Tables (3)

Barriers (Roads); Bridge decks; Bridge railings; Costs; Crash tests; Simulation

AASHTO Manual for Assessing Safety Hardware

Manitoba

Bridges and other structures; Design; Highways; Safety and Human Factors

PRP, TRIS, TRB, ATRI

Dec 8 2016 11:45AM

• Development of a Test Level 3 Transition Between Guardrail and Portable Concrete Barriers
• Driving Simulator Study of J-Turn Acceleration–Deceleration Lane and U-Turn Spacing Configurations
• Effective Measures to Restrict Vehicle Turning Movements
• Estimating Total Maximum Daily Loads with the Stochastic Empirical Loading and Dilution Model
• Functional Classification System to Aid Contextual Design
• Limitations of Traditional Capacity Equations for Long Curb Inlets
• Operational and Safety Performance Investigation of Skew Superelevation Runoff
• Potential Effects of Heavy Vehicles on Operations of Super 2 Highways
• Shades of Green: Modifying Sustainability Rating Systems for Transit Center Functionality
• Standard Midwest Guardrail System Placed at 1V:2H Slope Break Point or with Omitted Post
• Stopping Sight Distance and Available Sight Distance: New Model and Reliability Analysis Comparison
• Use of Laboratory and Field Data to Evaluate the Pier Scour Equation from Hydraulic Engineering Circular 18