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The message below is from one of our project teams. We would appreciate your feedback.
We are looking to modify the standard temporary precast concrete barrier to provide protection to bicyclists during reconstruction of the Fish Hatchery Rd bridge over the beltline. As seen in the attached plan sheets, we have a 4' wide bike lane next to temporary precast concrete barrier during Stage 2 and 4 of construction. We propose modifying the barrier by adding chain link fence to the outside face of barrier to provide a minimum 42" high combination barrier / fencing. Given the 30 mph speed limit, need to protect bicyclists from falling onto the beltline, and temporary nature of this condition, we believe this to be a reasonable solution. Please let us know if you concur.
|Date||October 14, 2011|
We have found some a reference involving the chain link fence on concrete barrier:
7. Buth, C.E. and Megnes, W.L., Crash Testing and Evaluation of Retrofit Bridge Railings and Transition, Report No. FHWA-RD-96-032, Submitted to the Office of Safety and Traffic Operations R&D, Federal Highway Administration, Performed by Texas Transportation Institute, Texas A&M University, College Station, Texas, January 1997.
Some other pedestrian rail reference suggestions include:
Bullard, D.L., Jr., Menges, W.L., and Buth, C.E., "Development of Combination Pedestrian-Traffic Bridge Railings," Paper No. 940617, Presented at the 73rd Annual Meeting of the Transportation Research Board, Washington, D.C., January 1994.
Hirsch, T.J., Buth, C.E., and Campise, W., "Aesthetically Pleasing Concrete Combination Pedestrian-Traffic Bridge Rail - Texas Type C411," Report No.
FHWA/TX-91/1185-3F or TTI-2-5-89/90-1185-3F, Submitted to the Texas State Department of Highways and Public Transportation, Performed by Texas Transportation Institute, Texas A&M University, February 1991/Revised.
Hirsch, T.J., and Buth, C.E., "Aesthetically Pleasing Combination Pedestrian-Traffic Bridge Rail," Transportation Research Record No. 1367, Transportation Research Board, National Research Council, Washington, D.C., 1992.
Washington State has a list of approved pedestrian rails, and I'm not sure some of these have been crash tested. Maybe so, but they don't give federal approval letter notice or reference to a crash test.
TXDOT has their own pedestrian rail, but once again no crash testing
FHWA list of barriers which include NJ barriers with rails:
|Date||October 18, 2011|
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