DOW JONES NEWSWIRES WASHINGTON -(Dow Jones)- U.S. Treasury Secretary Timothy Geithner Tuesday used a visit to a fiber-optics manufacturing plant to urge Congress to pass new infrastructure spending measures. "Investments in the power grid, satellites, and the information infrastructure connecting communities and classrooms to high-speed Internet all help to keep our economy running at its full potential," Geithner said in remarks prepared for a visit to Corning Inc.'s (GLW) fiber-optics manufacturing plant in Wilmington, N.C. The Senate earlier this month voted against President Barack Obama's $447 billion package of spending initiatives and tax cuts. All Republicans voted against the bill, and two Democrats also opposed it. Senate Democrats are now moving forward with Obama's jobs plan in pieces. Lawmakers are scheduled to take up infrastructure provisions of the jobs bill next week, though approval is unlikely due to strong Republican opposition to new spending. -By Jeffrey Sparshott, Dow Jones Newswires; 202-862-9291; jeffrey.sparshott@dowjones.com