Capital Bikeshare has changed the way people in the D.C. region commute, with 47 percent of surveyed members saying the program has decreased their Metrorail use. It’s also given residents of D.C., Arlington, Alexandria and Montgomery County a new way to travel between these areas.

Michael Schade at Mobility Lab crunched the numbers for 2013 and found that a promising number of members use Bikeshare to travel between the jurisdictions where the bikes are available:

Using 2013 numbers, 3 percent of all CaBi trips were between two of the four jurisdictions, with the bulk of those trips, 89 percent, going between D.C. and Arlington. Arlington is the jurisdiction with the greatest percentage of riders crossing its border: 35 percent of trips to or from an Arlington CaBi station are connecting with a station outside the county. Most of those trips (95 percent) cross the Potomac River into D.C.

In 2013, there were a total of 72,988 CaBi river crossings between Virginia and D.C. or Maryland. That’s 200 per day. CaBi’s busiest cross-river route was between the Georgetown station by the C & O Canal on Wisconsin Avenue and the Rosslyn station at 19th and Lynn, with 2,394 trips over the course of the year.

The Anacostia River also sees a bit of CaBi traffic, with 6,679 crossings in 2013. In fact, 66 percent of trips to or from stations east of the river connect to stations on the other side. The most popular trip that crosses the Anacostia is along Pennsylvania Avenue SE, between Potomac and Branch avenues.

The above video, created by Schade, “shows all cross-river traffic traffic (both the Potomac and the Anacostia) during the first three months of 2014, with each day overlaid on the others.” It’s exciting to see how, not just registered users, but casual users of Capital Bikeshare are using the bikes to travel across the rivers without a vehicle.