The Smithsonian National Museum of African American History and Culture opened Sept. 24. (Jahi Chikwendiu/The Washington Post)

The National Museum of African American History and Culture will begin allowing walk-up entry on weekdays later this month, but timed passes will still be required on weekends, officials said.

Timed passes have been required for admission to the newest Smithsonian museum, which opened on the Mall Sept. 24. But starting as early as Nov. 14, the museum will offer more walk-up passes, said spokeswoman Linda St. Thomas. The museum distributes same-day passes each weekday morning starting at 9; it plans to allow walk-up visitors throughout the day as crowds permit, she said.

The museum is averaging 6,000 visitors daily on weekdays and 8,000 to 8,500 on weekends, St. Thomas said. About 310,000 individuals had visited as of Nov. 1, including large crowds during the opening week.

Free timed passes for admission through December were made available in late August and snapped up within hours. Another batch for January through March were distributed in early October, and those, too, ran out. The museum has not said when the next group of passes will be released.

[Computer problems plague latest distribution of passes to African American museum]

Visitors are still experiencing log-jams in the museum’s history galleries, especially at the elevator down to the lowest level and at the entrance to the exhibit of Emmett Till’s casket. The congestion is the result of the museum’s design and cannot be easily fixed.

(This story has been updated.)