Retrofit Design of the New Manual for Assessing Safety Hardware (MASH) TL-4 Alaska 2-Tube Bridge Rail
-
2022-02-10
Details:
-
Creators:
-
Corporate Creators:
-
Corporate Contributors:Alaska. Department of Transportation and Public Facilities. Research and Technology Transfer ; Alaska. Department of Transportation and Public Facilities. Statewide Research Office ; United States. Department of Transportation. Federal Highway Administration ; North Dakota. Department of Transportation
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Corporate Publisher:
-
Abstract:Many of bridges in the United States are obsolete with respect to the updated AASHTO strength requirements and the safety performance criteria stated in MASH. Many of these bridges utilize a wide concrete curb with a post and bridge rail system. Often, it is not economically feasible to completely replace the obsolete bridge rails with newer MASH compliant designs. State transportation agencies may need to utilize a crashworthy bridge rail retrofit design when an obsolete bridge railing needs to be replaced with a MASH compliant bridge rail system. The project scope for this project included developing details and performing the necessary engineering analyses to anchor the new Alaska 2-Tube Bridge Rail onto three existing North Dakota Department of Transportation bridges with obsolete bridge rails with curbs. One additional design involved anchoring through the curb and deck for an Alaska Department of Transportation Bridge. Details for these 4 select bridges (1 in Alaska and 3 in North Dakota) using the new MASH TL-4 Alaska 2-Tube bridge rail designed and crash-tested at TTI were developed. These new retrofit bridge rails were designed to meet the crash performance requirements of MASH TL-4 or TL-3 if necessary
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type: