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The Institute for Supply Management’s March manufacturing index slowed and costs rose to the highest since August, ISM said Monday.

The U.S. EPA said last week that diesel engine manufacturers who want to use selective catalytic reduction to meet EPA’s 2010 emission rules must supply the urea SCR requires and prove it will be available to truck drivers using those engines.

A loosening of the tight capacity for freight hauling now makes the fuel-surcharge programs — upon which motor carriers depend to insulate them from fuel price spikes — vulnerable to demands for change by shippers.

Several parts of the Capital Beltway, Interstate 95/495 near Washington, D.C., will be closed temporarily this weekend due to scheduled work, the Maryland State Highway Administration said.

Rail intermodal traffic fell 4.7% last week compared with the same week last year, while rail carloads fell 2.7%, the Association of American Railroads said Thursday.

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The owner of the bridge that connects Detroit to Windsor, Ontario, has applied for $1 billion in U.S. bonds to help pay for a new twin span, and the state agency that will help make that decision is a chief competitor in building a new bridge, the Detroit News reported.