MASH UPDATE

MASH UPDATEKENNETH MORA, P.E./ROADWAY DESIGN SECTION - DESIGN DIVISION

MASH UPDATE

Table of contents

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MASH Implementation Agreement and Latest Guidance

Webpage – Standards Listing

Standards Status (RDWY, BR, MNT, TRF)

Upcoming Roadway Standards

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MASH UPDATE

MASH Implementation Agreement and Latest Guidance

▪ Joint Implementation agreement is between FHWA and AASHTO (dated Jan. 7th, 2016)

▪ The Agreement states that for contracts on the National Highway System, with a letting date after the dates below, only safety hardware evaluated using 2016 MASH criteria will be allowed for new permanent installations and full replacements:

▪ Implementation Dates:

– 12-31-17 : W-beam barriers, and cast-in-place concrete barriers

– 06-30-18: W-beam terminals

– 12-31-19: Bridge rails, transitions, all other longitudinal barriers (including portable barriers installed permanently), all other terminals, sign supports, all other breakaway hardware.

– Latest Guidance for Cable Barriers, Crash Cushions, and other categories of devices associated with the 12-31-19 sunset date: States are allowed to use NCHRP 350, or MASH 2009 roadside safety hardware devices for categories of devices that do not have a MASH 2016 alternative that has been approved for use in the State.

**Note: All Standards currently available on respective Division Standards webpages are currently available for use.

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MASH UPDATE

Temporary Work Zone Devices (SP 502-008)

▪ SP 502-008

– Temporary work zone devices, including portable barriers, manufactured after 12-31-19, must have been successfully tested to the 2016 edition of MASH. Such devices manufactured on or before this date, and successfully tested to NCHRP Report 350 or the 2009 edition of MASH, may continue to be used throughout their normal service lives.

– An exception to the manufacture date applies when a particular category of RSH devices does not have a MASH 2016 alternative available . In such a case, devices that meet NCHRP-350 or MASH-2009 may be used regardless of the manufacture date.

– Category 1 devices (e.g., cones, drums) may be self-certified by Vendor or provider, with documentation provided to TxDOT.

– SP 502-008 (Statewide), Effective beginning with Dec. 2020 Letting, may be used as a one-time use prior to that date.

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MASH UPDATE

SP 502-008

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MASH UPDATE

MASH standards listing location

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MASH COMPLIANT

STANDARDS

MASH UPDATE

Standards status (RDWY)

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Roadway standards: Either Generic or proprietary, are either currently MASH compliant or will be

updated (possibly as a result of future scheduled testing) to MASH compliance, or retired in the future.

MASH UPDATE

Standards status (Bridge)

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Bridge Railing standards: All generic, and all are MASH Compliant.

MASH UPDATE

Standards status (MNT)

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Maintenance standards: All generic, are either currently MASH compliant with some items scheduled

for verification testing or scheduled for removal.

MASH UPDATE

Standards status (TRF)

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Traffic standards: Either Generic or proprietary, are either MASH compliant or will be updated

(possibly as a result of future scheduled testing) to MASH compliance, or retired in the future.

MASH UPDATE

Upcoming MASH 2016 COMPLIANT STANDARDS (TBR in Oct/NOV 2020)

▪ Low Maintenance Crash Cushion: QUADGUARD ELITE M10 (WIDE) – TL-3

▪ Reusable Crash Cushion: QUADGUARD M10 (NARROW) – TL-2

▪ MBGF Special Applications: Short Radius: TL-3 & TL-2.

▪ SSCB (PRECAST) TL-4, RESTRAINED AND UNRESTRAINED.

▪ SSCB (CIP) FLOOD PRONE BARRIER TL-4 – Rigid, and Flexible Pavement

▪ F-SHAPE TO SSCB TRANSITION

▪ MASH 2016 COMPLIANT CABLE BARRIER IS ANTICIPATED FOR RELEASE IN NOV./DEC

TIMEFRAME.

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MASH UPDATE

Thank You!