The National Transportation Safety Board (NTSB) is asking for assistance from those who witnessed the collapse of the I-35W bridge.
The NTSB asks that you call its Witness Hotline at 1-866-328-6347 to leave your name, phone number and the type of information you have (including video and photos).
NTSB officials will then contact you after reviewing the call.
The call is for eyewitness accounts only. The NTSB asks that no one else use this number to provide any other information.