Helicopters and several emergency vehicles were scrambled to the Kincardine Bridge amid concern for a person.
The bridge was closed to traffic in both directions and the road between it and the roundabout near Longannet was shut at around 3pm on Sunday.
Witnesses reported seeing police and Coastguard helicopters, numerous police cars, police dogs and fire engines at the scene.
The person involved was traced and the bridge was reopened around two hours later.
A statement from Police Scotland on Twitter said it had coordinated a response involving its dogs, road policing and air support units, the Marine and Coastguard Agency, Scottish Ambulance Service and Scottish Fire and Rescue Service.
Police officers from Fife and Forth Valley divisions were also involved.
The force said: “The person has been traced safe and well. Thanks for everyone’s concern.”
Traffic was diverted via the Clackmannanshire Bridge.
We have co-ordinated resources from @polscotdogs @polscotrpu @polscotair @MCA_media @FifePolice @ForthValPolice @Scotambservice & @fire_scot regarding a concern for a person at the #KincardineBridge. The person has been traced safe and well. Thanks for everyones concern.
— Police Scotland Control Rooms (@polscotcontrol) January 14, 2018