|
|
|
Title: PERFORMANCE LEVEL 3 BRIDGE RAILINGS
Accession Number: 00714995
Record Type: Component
Availability: Find a library where document is available Abstract: Many existing bridge railings have been designed to restrain and redirect passenger vehicles. Because of specific site conditions, some locations along the nation's highways require that bridge railings contain and redirect heavier vehicles, such as commercial trucks and buses. These sites include areas where the consequences of failure to contain a vehicle would be severe. Examples include bridges that are grade separation structures crossing heavily congested traffic lanes, areas of reduced radius of curvature, elevated ramps near schools or hospitals, and other areas where additional protection is needed to prevent heavier vehicles from penetrating or rolling over the bridge railing. According to the 1989 American Association of State Highway and Transportation Officials (AASHTO) "Guide Specifications for Bridge Railings", these sites require Performance Level 3 (PL3) bridge railings. Two PL3 bridge railings were developed under a recently completed pooled funds study sponsored by the Federal Highway Administration, the District of Columbia, and 23 states. The 1.07-m (42-in.) F-shape bridge railing and the 1.07-m (42-in.) concrete parapet were tested and evaluated according to the PL3 requirements of the 1989 AASHTO guide. Both bridge railings performed acceptably.
Supplemental Notes: This paper appears in Transportation Research Record No. 1500, Geometric Design, Roadside Safety Features, Roadside Hardware Monitoring, and Scenic Loop Tours. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
Monograph Title: Geometric design, roadside safety features, roadside hardware monitoring, and scenic loop tours Monograph Accession #: 01399820
Language: English
Authors: Menges, Wanda LButh, C EugeneBullard Jr, D LanceMcDevitt, Charles FPagination: p. 92-101
Publication Date: 1995
Serial: Features: Figures
(6)
; Photos
(30)
; References
(7)
; Tables
(5)
TRT Terms: Uncontrolled Terms: Subject Areas: Bridges and other structures; Design; Highways; Motor Carriers; Public Transportation; I24: Design of Bridges and Retaining Walls
Files: TRIS, TRB
Created Date: Dec 26 1995 12:00AM
More Articles from this Serial Issue:
|
