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The work included a seismic study to determine whether the monument was still structurally sound and the rappelling of a difficult-access team along the sheer face of the monument to assess the damage.

Mr. Collie said that during the work crews discovered some of the original eye bolts used during the building of the monument back in the 19th century. The bolts, which resemble a lowercase “i,” were used for the rigging that hoisted the enormous marble stones into place.

The marble stones for the repairs were sourced from Maryland, said James Perry, chief of resource management for the Park Service, including some salvaged from other projects, such as a roughly 2-foot long block that was once a step at a Baltimore row house.

Officials said the extent of the earthquake damage could have been worse had the monument not been restored from 1998 to 2000.

“It was the most damage to the monument from a single event,” Mr. Perry said. “We literally went stone by stone surveying. Now we’ve got a wonderful road map of the condition of the monument.”

Tickets for monument tours can be obtained at the Washington Monument Lodge on 15th Street Northwest between Madison and Jefferson drives. Same-day tickets are free, and advance ticket reservations can be made online for a fee.

Park Service officials said advance tickets are sold out for several weeks, but walk-up tickets are set aside each day. Those are available on a first-come, first-served basis.