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4 <br /> <br /> <br /> <br /> <br /> <br />NOTES: 1.) The above rail length options are allowable for the MSKT. <br /> <br />2.) Blockouts are 8" or 12" deep to match the W-Beam barrier that the specifying agency <br />has shown downstream of the MSKT. <br /> <br />** FHWA Open Letter to all in the highway safety hardware and roadside design <br />community dated May 26, 2017 states “FHWA will no longer provide Federal-aid <br />eligibility letters for modifications made to an AASHTO MASH-crash tested device.” <br /> <br />It further states “The changes promote efficiency of Federal resources while advancing <br />our Federal role to support public safety and ensuring that decision-making is at the State <br />and local level. The FHWA will address the initial "entry" of a device into the possibility <br />for Federal-aid reimbursement, through examining crash testing, but the final decisions <br />on selection and modifications to devices will be at the State and local level. <br /> <br />It also says “States and manufacturers will now have an outstanding opportunity to <br />collaborate and deploy manufacturers' innovative modifications in a timely manner and/or <br />respond to State-specific needs requiring significant and non-significant modifications - <br />without the need of another Federal-aid eligibility letter from FHWA.” <br /> <br />2 MSKT Design and Rail Options <br />** <br />**