11.   In recent weeks, the bridges have been closed several times after anonymous bomb threats.

12.   Late Saturday, police briefly closed the bridge connecting Laughlin with Bullhead City after they said they received credible reports that more violence could happen.

13.   One night, Mitchell was an hour late for work because a bridge had been closed to let Humphrey pass.

14.   That work will require the bridge to be closed for about four months next year.

15.   The accident closed the bridge, a major artery between Portland and South Portland, for two and a half days.

16.   The bridge is closed to civilians.

17.   The bridge was closed for several hours early Sunday.

18.   The Brooklyn, Manhattan and Williamsburg bridges were closed, but the George Washington Bridge was open, with routine, even comforting, delays.

19.   The police closed bridges to many barrier islands Thursday because stretches of road were submerged or blocked by debris.

20.   They quickly closed a bridge that connects the Serbian and Albanian parts of the city, pulling across coils of barbed wire and planks of wood studded with nails.