The Midwest Roadside Safety Facility, in cooperation with the Forest Products Laboratory, which is part of the U.S. Department of Agriculture’s Forest Service, and FHWA, designed two bridge railing and approach guardrail transition systems for use on bridges with transverse glue-laminated timber decks. The bridge railing and transition systems were developed and crash tested for use on higher-service-level roadways and evaluated according to the Test Level 4 safety performance criteria presented in NCHRP Report 350: Recommended Procedures for the Safety Performance Evaluation of Highway Features. The first railing system was constructed with glulam timber components, whereas the second railing system was configured with steel hardware. Eight full-scale crash tests were performed, and the bridge railing and transition systems were acceptable according to current safety standards.
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References
1.
RossH. E.Jr., SickingD. L., ZimmerR. A., and MichieJ. D.. NCHRP Report 350: Recommended Procedures for the Safety Performance Evaluation of Highway Features. TRB, National Research Council, Washington, D.C., 1993.
2.
PowellG. H.BARRIER VII: A Computer Program for Evaluation of Automobile Barrier Systems. Report RD-73-51. FHWA, U.S. Department of Transportation, April1973.
3.
Standard Specifications for Highway Bridges. AASHTO, Washington, D.C., 1989.
4.
Highway Research Circular 482: Full-Scale Testing Procedures for Guardrails and Guide Posts. HRB, National Research Council, Washington, D.C., 1962.
5.
MichieJ. D.NCHRP Report 230: Recommended Procedures for the Safety Performance Evaluation of Highway Appurtenances. TRB, National Research Council, Washington, D.C., 1981.
6.
Guide Specifications for Bridge Railings. AASHTO, Washington, D.C., 1989.
HirschT. J.Analytical Evaluation of Texas Bridge Rails to Contain Buses and Trucks. Report FHWA/TX78-230-2. Texas Transportation Institute, Texas A&M University, Aug.1978.
9.
Memorandum on Bridge Rails. File Designation HNG-10/HHS-10. FHWA, U.S. Department of Transportation, Aug.28, 1986.
10.
Memorandum on Crash Tested Bridge Railings. File Designation HNG-14. FHWA, U.S. Department of TransportationAug.13, 1990.
11.
HancockK. L., HansenA. G., and MayerJ. B.. Aesthetic Bridge Rails, Transitions, and Terminals for Park Roads and Parkways. Report FHWA-RD-90-052. Scientex Corporation, May1990.
12.
FallerR. K., RitterM. A., HollowayJ. C., PfeiferB. G., and RossonB. T.. Performance Level 1 Bridge Railings for Timber Decks. In Transportation Research Record 1419, TRB, National Research Council, Washington, D.C., 1993, pp. 21–34.
13.
RossonB. T., FallerR. K., and RitterM. A.. Performance Level 2 and Test Level 4 Bridge Railings for Timber Decks. In Transportation Research Record 1500, TRB, National Research Council, Washington, D.C., 1995, pp. 102–111.
14.
FallerR. K., RossonB. T., SickingD. L., RitterM. A., and BunnellS.. Design and Evaluation of Two Bridge Railings for Low-Volume Roads. Conference Proceedings 6: Sixth International Conference on Low-Volume Roads, Vol. 2, TRB, National Research Council, Washington, D.C., 1995, pp. 357–372.
15.
RitterM. A., FallerR. K., BunnellS., LeeP. D. H., and RossonB. T.. Plans for Crash Tested Bridge Railings for Longitudinal Wood Decks. General Technical Report FPL-GTR-87, Forest Products Laboratory, Forest Service, U.S. Department of Agriculture, Madison, Wis., 1998.
16.
FallerR. K., RossonB. T., RitterM. A., LeeP. D. H., and DuwadiS. R.. Railing Systems for Longitudinal Timber Deck Bridges. Presented at National Conference on Wood Transportation Structures. Madison, Wis., Oct. 23-25, 1996; and General Technical Report FPL-GTR-94, Forest Products Laboratory, Forest Service, U.S. Department of Agriculture, andFHWA, U.S. Department of Transportation, Oct. 1996.
17.
RitterM. A., FallerR., BunnellK. S., LeeP., D. H. B. and RossonT.. Plans for Crash-Tested Railings for Longitudinal Wood Decks on Low-Volume Roads. General Technical Report No. FPL-GTR-107. Forest Products Laboratory, Forest Service, U. S. Department of Agriculture, andFHWA, U. S. Department of Transportation, Aug.1998.
18.
RajuP. R., GangaRaoH. V. S., DuwadiS. R., and ThippeswamyH. K.. Development and Testing of Timber Bridge and Transition Rails for Transverse Glued-Laminated Bridge Decks. In Transportation Research Record 1460, TRB, National Research Council, Washington, D.C., 1994, pp. 8–18.
19.
ButhC. E., CampiseW. L., GriffinL. I.III, LoveM. L., and SickingD. L.. Performance Limits of Longitudinal Barrier Systems, Volume 1: Summary Report. Report FHWA/RD-86/153. Texas Transportation Institute, May1986.
20.
IveyD. L., RobertsonR., and ButhC. E.. Test and Evaluation of W-Beam and Thrie-Beam Guardrails. Report FHWA/RD-82/071. Texas Transportation Institute, March1986.
21.
RossH. E.Jr., PereraH. S., SickingD. L., and BlighR. P.. NCHRP Report 318: Roadside Safety Design for Small Vehicles. TRB, National Research Council, Washington, D.C., May1989.
22.
FowlerM. D.Design and Testing of a Test Level 4 Bridge Railing for Transverse Glulam Timber Deck Bridges. M.S. thesis. University of Nebraska-Lincoln, May1997.
23.
AWPA Book of Standards, American Wood Preservers’ Association, Woodstock, Md., 1992.
