Dive summary:

• Transportation for America, an avowed advocacy organization for spending money to fix transportation infrastructure, has issued a report that it says uses federal data to show that one in nine U.S. bridges is in the category engineers call "structurally deficient" and may be dangerous.
• The American Society of Civil Engineers annually issues a report on the state of the nation's infrastructure of all kinds, but the new report focuses on roads and bridges and is using its findings to tell the public that it may be at risk every day.
• With the recent I-5 bridge collapse in the state of Washington and the collapse several years ago of an interstate bridge near Minneapolis, the group appears to believe there is a receptive audience for the message that Americans make 260 million trips a day over deficient bridges.

From the article:

Nearly 8,000 [bridges] are both structurally deficient and “fracture critical,” meaning they are designed with no redundancy in their key structural components, so that if one fails the bridge could collapse. ...