Tunnel comments sought

| July 22, 2010

The Federal Highway Administration is requesting comment on a proposed new rule to establish national uniform standards for federal tunnel inspections.

Currently, FHWA provides tunnel inspection guidance, but existing regulations do not require tunnel owners, such as state departments of transportation or local authorities, to inspect tunnels. In addition, inspection methods vary significantly among the roughly estimated 350 highway tunnels in the country.

Referred to as National Tunnel Inspection Standards, the proposed new standards would be modeled after National Bridge Inspection Standards, the existing safety inspection program for bridges nationwide. The tunnel standards would include similar requirements for the inspection of structural and functional systems along with a national inventory of tunnels.

FHWA’s efforts to develop national tunnel inspection standards preceded the fatal July 2006 suspended ceiling collapse in the Central Artery Tunnel in Boston, but that event brought national attention to the need for mandated and uniform tunnel inspections for public safety. Following its investigation of the collapse, the National Transportation Safety Board recommended the need for FHWA to establish such standards.

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