The 23A also runs through other neighborhoods such as McLean, Rock Springs, Buckingham, Nauck, Parkfairfax, Arlington Ridge, and Aurora Highlands.

Routes 23B and 23T operate on daily schedules with the same intervals, with transfers between Ballston station and Shirlington Transit Center.

The 23 line runs along Dolley Madison Boulevard, Old Dominion Drive, and Glebe Road, connecting to Fairfax and Arlington counties and Alexandria.

Route 23C was added to operate between the CIA headquarters and Crystal City, although, select 23C trips terminates at the Village at Shirlington.

The 23C only operates during rush hour, bringing faster service between the neighborhood of McLean and Crystal City.

[6] The 23A was also rerouted from Chain Bridge Road, to Dolley Madison Boulevard, to bring new service for the Silver Line, which opened on July 26, 2014.

[9] The 23A will be rerouted to operate via Dolley Madison Boulevard instead of Chain Bridge Road, to serve Salona Village Shopping Center at McLean.

The reason why WMATA planned these changes was to clear up bus bunching with Fairfax Connector on Chain Bridge Road, as those routes operates nearly the same path as the 23A.

[9] To make way for the Silver Line, the 23A was truncated from Tysons-Westpark Transit Station to Tysons Corner Center March 30, 2014.

A temporary 23W was added to serve as a shuttle bus between Tysons-Westpark Transit Station and Tysons Corner Center, until the Silver line opens.