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Update, 5 p.m.

Wisconsin Avenue north of downtown Bethesda has reopened. The road, which had been closed intermittently this afternoon between Battery Lane and Cedar Lane, reopened after President Obama’s helicopter left Walter Reed National Military Medical Center around 4:30 p.m.

Original Post:

Afternoon rush hour likely will be a mess in the Bethesda area Tuesday afternoon, when a one-mile stretch of Wisconsin Avenue will be closed until about 6 p.m. because of a visit by President Obama to the Walter Reed National Military Medical Center.

Wisconsin Avenue will be closed between Battery Lane and Cedar Lane, Montgomery County police said. The closures will begin “soon” this afternoon, but police did not give a specific time. Alternate routes include Old Georgetown Road and Connecticut Avenue, which likely will suffer from spillover traffic. Backups also could affect the Capital Beltway from traffic trying to exit onto Route 355.

Obama will be visiting wounded troops and their families at Walter Reed, White House officials said, something he’s done every few months.