Because of the challenges in adding underground infill stations, most candidates are going to be at grade or above ground. Almost by definition, that means fewer opportunities for infill stations around the core of the system, and therefore within Washington’s city limits.

The existing system features a huge gap as the Orange/Blue/Silver lines cross the Anacostia River. The east of the river stations (Minnesota Ave and Benning Road) are both two miles from Stadium-Armory.

Filling this gap is not a new idea – early WMATA plans called for stations at both locations. Oklahoma Ave was on the books long enough for renderings to be drawn up.

WMATA originally considered the area next to the Benning Road Power Plant for a rail yard (the “S&I” oval on the map above, for service and inspection). The adjacent Kenilworth Ave station eventually moved east and became Minnesota Ave.

These two sites are unique in that they do not parallel any existing railroad services, where future regional rail might offer faster, longer-distance service, allowing Metro to focus on shorter distance travel markets. Part of the argument for more infill stations, particularly in the suburbs, is the promise of regional rail. However, these two locations do not need that promise to fulfill their roles – they offer compelling visions on their own.

Oklahoma Ave

Metro planners envisioned Oklahoma Ave as a park and ride station, taking advantage of the extensive surface parking for nearby RFK Stadium on non-event days. The nearby Kingman Park community vociferously opposed a parking-focused station, and WMATA eventually dropped the station in 1977.

Adding an infill station at Oklahoma Ave would likely follow the same concept from the 70s: two side platforms along the existing elevated guideway.

Connections: Potential transit connections from Oklahoma Ave are relatively weak. Almost all transit is located just north along Benning Road, including the DC Streetcar as well as extensive bus service. It wouldn’t be difficult to extend those lines to connect with the station, but the expense (and ongoing time penalty for bus riders) for doing so would depend on the broader plan – if Oklahoma Ave were built together with a River Terrace station, the latter could offer superior transit connections.

Land use: This is another challenge for the area. The immediate surroundings are the northern parking lots for now-vacant RFK Stadium. A large portion of those parking lots are now athletic fields. The parking lots were originally created by filling in the Anacostia’s tidal marshes. As a result, the entire area is within the floodplain, and unlikely to ever be developed as housing or office.

Redevelopment of the remainder of the RFK site outside of the floodplain is a contentious topic with complicated jurisdictional issues yet to be resolved. If the site were to return to a stadium/venue use, the ability to disperse crowds to multiple Metro stations would be a potential advantage.

Without an intense use at RFK, the rationale for Oklahoma Ave is less clear, particularly if River Terrace were built. However, if RFK Stadium were to be redeveloped as some sort of venue with large crowds, then the case for Oklahoma Ave is much stronger.

Ease of Construction: The biggest benefit at Oklahoma Ave is that construction ought to be easy – existing elevated track in the middle of a parking lot. The potential complications would involve any operational changes to the existing line, and determining any role for this location in future Metro expansion plans.

River Terrace

An infill station at River Terrace presents a tantalizing opportunity. The existing tracks are located at a key chokepoint and river crossing, served by one of the busiest bus lines in the city. The existing neighborhood to the south of Benning Road is isolated, separated from the rest of the city by the river to the west, DC-295 and the railroad tracks to the east, and the former Pepco site to the north.

Connections: Benning Road serves as a critical choke point for transit service, making it a great candidate for improved infrastructure. Lots of bus services cross the river here; the nearest crossing to the north (US-50) is along a freeway, and to the south (East Capitol Street) lacks good service. The DC streetcar terminates just to the west, with longstanding plans to extend it along this stretch of Benning Road.

In the future, the H/Benning corridor has long been targeted for Metrorail service. One of the longstanding concepts would be the “separated Blue line,” a new trunk line through the District to separate out existing Blue Line services from Orange and Silver services. Such a vision ought to include River Terrace as a four-track station enabling cross-platform transfers.

WMATA is currently in the midst of their ‘Blue/Orange/Silver’ study. The concepts released in 2021 did not include a new connection at River Terrace. These larger network designs will impact the kind of infill station design for River Terrace.

DC’s once-ambitious streetcar plans have been substantially curtailed. However, the one extension still officially on the books (though controversially) is the Benning Road extension, passing through the River Terrace site. One rationale for the extension is to connect the eastern end of the streetcar line to something, preferably a Metro station. However, because of the D&G junction, splitting Metro service along the Orange Line and Blue/Silver lines, connecting at Benning Road means losing the value of connections for Orange Line passengers.

Land Use: Immediately adjacent to the station site is Pepco’s now-demolished Benning Road Power Plant site. The plant was demolished in 2012, and in later years was only used during peak periods of demand for a few days per year.

The plant was once the source of a huge amount of pollution, particularly in the Anacostia riverbed. Large-scale remediation and clean-up will be needed before redevelopment is feasible. Additionally, the site retains electrical distribution infrastructure and support for Pepco operations.

Despite all the challenges, it’s a 70+ acre site in the middle of the city with (potentially) excellent transit connections.

Ease of Construction: Compared to Oklahoma Ave, just adding platforms to the existing elevated section would be extremely complicated.

First, this section of track includes the notoriously unreliable D-route pocket track. The pocket track was originally slated to turn terminating Silver Line trains, but WMATA determined it was not suitable to serve that purpose reliably, and investigated alternative designs.

Second, the location of the pocket track (the straightest section) extends over the Anacostia River. Furthermore, the track itself is immediately adjacent to the Benning Road right of way, requiring some combination of road and bridge relocation or a station cantilevered over Benning Road.

Any design with side platforms ought to consider the possibility of a new Blue Line connecting through this location. The ideal design would allow for a future cross-platform transfer between the existing tracks and future Blue line services.

Third, Benning Road itself provides an opportunity for a creative and efficient passenger transfer from Metro to buses and streetcars. Doing so will involve extensive reconstruction in the area, meaning this won’t be a simple infill station – but the opportunity is too large to pass up.

There are lots of examples of efficient transfers between streetcars and rapid transit. Toronto is full of them, such as this one at Dundas West.

St. Clair West is another, featuring a fully-integrated streetcar and bus transfer loop built around (not just next to) the entrances to and from the subway. Passengers can transfer easily while protected from the elements and with minimal walking distance.

(side notes: Dundas West includes a small McDonalds, hitting on another minor obsession of mind, in-station retail. Also, do check out the excellent Station Fixation blog for a full visual tour of the entire Toronto system)

At River Terrace, this might involve diverting the streetcar tracks off of Benning Road itself to encircle a ground-level mezzanine for the Metro station, offering quick and direct transfers for passengers moving between modes.