NTSB investigating second highway bridge collapse in Missouri

The National Transportation Safety Board (NTSB) is investigating a second highway bridge collapse, this time in Missouri, according to officials with the agency.

The bridge, which carries cars on a county road in Scott, Mo., collapsed early on Sunday morning when two freight trains collided underneath it and struck a support pillar.

The incident follows a high-profile collapse of a bridge in Washington state, which was also called by damage to an overhead structure from a truck that was too large.

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The NTSB said Sunday that the freight trains that crashed and caused the bridge collapse were being operating by Union Pacific freight rail and BNSF.

Seven people were injured in the Missouri bridge collapse, according to reports.

Transportation advocates have seized upon the Washington bridge collapse to argue that lawmakers should provide more funding for infrastructure improvements across the country.