Oxon Hill–Suitland Line

The Oxon Hill–Suitland Line, designated Routes D12 & D14, were daily bus routes operated by the Washington Metropolitan Area Transit Authority between Southern Avenue station and Suitland station of the Green Line of the Washington Metro. The D12 operated every 20 minutes between 7AM and 9PM and 60 minutes after 9PM while the D14 operated every 24–30 minutes during the peak hours and every 60 minutes at all other times. Trips roughly took 60 minutes (D12) or 70–80 minutes (D14).

Background

Routes D12 and D14 operated between Southern Avenue station and Suitland station mainly connecting riders along Saint Barnabas Road for the D12, and Brinkley Road, Allentown Road, and Indian Head Highway for route D14. Routes D12 and D14 operated daily. Route D14 followed much of the D12 routing except skipping the D12 routing along Audrey Lane, Deal Drive, Marcy Avenue and Livingston Terrace.

Routes D12 and D14 operated out of Andrews Federal Center garage full-time. The line formerly operated out of Southern Avenue garage on weekdays and Shepherd Parkway on weekends.

D12 Stops

D14 Stops

History

Routes D12 and D14 was originally operated under the Washington Marlboro & Annapolis Motor Lines Inc. (WM&A) which operated between Eastover Shopping Center and Downtown Washington DC beginning in 1945 (D14) and 1948 (D12). The line was connected via South Capitol Street towards Downtown (11th and E Streets NW). Route D12 originally was named Route D while route D14 was originally named Route M. In 1953 WM&A adopted letter designations for its routes with new routes D12 and D14. In 1973, routes D12 and D14 were acquired by WMATA when they acquired the WM&A.

Later, route D14 would be eliminated, but a new route S12 would be introduced to operate alongside the D12. Route S12 would operate between Southview apartments and Federal Center station while route D12 operate between Marlow Heights and Federal Center station. At the time, the line was run as the Eastover–Marlow Heights Line.

On November 21, 1978, both routes D12 and S12 were shorten to operate between Eastover Shopping Center and Federal Center station. S12 service between Southview Apartments and Eastover was replaced by route P12.

On January 3, 2000, new boarding and alighting restrictions were implemented on route D12. During the AM rush, passengers can get on and off any southbound D12 bus going to Marlow Heights at any bus stop in Maryland and the District of Columbia with restrictions for northbound buses not changing. Passengers can get on and off the bus in Maryland but only get off the bus at stops in the District of Columbia.

During the PM rush, passengers can get on and off northbound buses going to Federal Center SW at any bus stop in Maryland and the District of Columbia with southbound restrictions not changing. Passengers can only get on the bus in the District of Columbia, and get on or off the bus at any stop in Maryland.

On January 13, 2001, when the Green Line extension to Branch Avenue station opened, route D12 was rerouted to operate between Suitland station and Southern Avenue station mainly operating along Saint Barnabas Road, Oxon Hill Road, Indian Head Highway, and Southern Avenue. Buses were also rerouted via 28th Avenue and Keith Street (behind Marlow Heights Shopping Center) and extended from the shopping center to the Suitland station via Branch Avenue and Saint Barnabas and Silver Hill roads.

Routes W11 and W12 from the Eastover–Indian Head Highway Line were also rerouted to operate alongside the D12 between Southern Avenue and Suitland stations and were renamed into routes D13 (W11) and D14 (W12). The line would mainly operate along Suitland Road, Allentown Road, Brinkley Road, Livingston Road, Indian Head Highway, and Southern Avenue. The line also operated via Andrews Air Force Base, as well as the Camp Springs, Temple Hills, and Glassmanor neighborhoods, which former Routes W11, W12, and W17 originally operated on between the Federal Center SW station and Acokeek.

All route S12 service was eliminated in the process being replaced by route D12, and P12.

In 2010 during WMATA's FY2011 budget, WMATA proposed to divert routes D13 and D14 into Oxon Hill Park & Ride Lot off Oxon Hill Road just west of Indian Head Highway in order to create a transfer connection between those routes and the NH1, which serves National Harbor. This would provide closer connections to National Harbor for passengers instead of having to take the Green Line to Branch Avenue station.

Beginning on October 15, 2019, for two years, eastbound D13 and D14 buses were forced to detour due to the Maryland State Highway Administration’s Maryland Route 210 Interchange Project. This prevents buses from turning left from Indian Head Hwy - MD 210 onto Livingston Road. As a result, routes D13 and D14 were forced to backtrack along Indian Head Highway detouring on Wilson Bridge Drive, before resuming its regular route Lindsay Rd at Livingston Rd. A temporary time transfer was also implemented for affected passengers at closed bus stops westbound. Westbound buses were unaffected by the detour.

During the COVID-19 pandemic, route D13 was suspended and routes D12 and D14 was reduced to operate on its Saturday supplemental schedule during the weekdays beginning on March 16, 2020. On March 18, 2020, the line was further reduced to operate on its Sunday schedule. On March 21, 2020, weekend service on the D14 became suspended and Route D12 was reduced to operate every 30 minutes. Service was restored to its full service on August 23, 2020.

In February 2021 during the FY2022 budget, WMATA proposed to eliminate Routes D13 and D14, and propose to extend the D12 to National Harbor to replace the NH1 and eliminate service between Southern Avenue station and Livingston Road & Oxon Hill Road if it did not receive federal funding. However the changes were avoided on March 10, 2021.

Beginning on June 15, 2021, eastbound routes D13 and D14 resumed its regular routing on Livingston Road following the completion of the Maryland State Highway Administration's Maryland Route 210 Interchange Project.

On September 5, 2021, all Route D13 service was renamed to the D14 while D14 service along Livingston Road, Livingston Terrace, Marcy Avenue, Deal Drive, Kennebec Street, Glassmanor Drive, Irvington Street, and Audrey Lane in Glassmanor was eliminated. Service was replaced by Routes D12 and P12 which increased service to every 12 (P12) and 20 (D12) minutes. Between Wilson Bridge Drive and the intersection of Indian Head Highway & Oxon Hill Road, service will operate along Kirby Hill Road and Oxon Hill Road, adding service at Oxon Hill Park & Ride. Service will continue to Wilson Bridge Drive.

On December 17, 2023, route D12 was rerouted to operate along Deal Drive and Audrey Lane in Glassmanor, discontinuing service along Glassmanor Drive and Irvington Street.

Better Bus Redesign

In 2022, WMATA launched its Better Bus Redesign project, which aimed to redesign the entire Metrobus Network and is the first full redesign of the agency's bus network in its history.

In April 2023, WMATA launched its Draft Visionary Network.

As part of the drafts, WMATA proposed to combine the D12 with the NH2 and operate the route between Suitland station and King Street–Old Town station. The line named Route MD263 would operate on the D12 routing between Suitland station and the intersection of Oxon Hill Road & Livingston Road via St. Barnabas Road, then would continue along Oxon Hill Road and serve Oxon Hill Park & Ride, MGM National Harbor, Eisenhower Avenue station, and King Street–Old Town station via Monument Avenue, National Harbor Boulevard, St. George Boulevard, the Capital Beltway, the Woodrow Wilson Bridge, Eisenhower Avenue, Mill Road, Jamieson Avenue, Dulany Street, and Diagonal Road.

D12 service between Southern Avenue station and Birchwood City would be combined with the P12 and named Route MD265. The routing follows the P12 routing between Southern Avenue station and Eastover Shopping Center via Southern Avenue SE, Southview Drive, Iverson Street, Owens Road, Kennebec Street, Deal Drive, and Audrey Lane, but the route would turn onto Indian Head Highway, then operate on Livingston Road before serving the D12's Birchwood City loop via Birchwood Drive, Galloway Drive, and Helmont Drive. Following the loop, the proposed Route MD265 would continue to National Harbor via Livingston Road, Oxon Hill Park & Ride, Monument Avenue, National Harbor Boulevard, and St. George Boulevard.

Route D14 would also be changed. In one of the proposals, which is named Route MD264, the D14 was to follow the D12 routing to Marlow Heights Shopping Center via Silver Hill Road, St. Barnabas Road, 28th Avenue, Keith Street, and St Clair Drive. The proposed route would then continue on St. Barnabas Road and turn onto Temple Hills Road, then onto Fisher Road, partially taking over Route H12 service. The route would then turn onto Brinkley Road, then operate a modified routing of the D14 to Oxon Hill Park & Ride via Brinkley Road, the Haras Place loop, Oxon Hill Road, Livingston Road, Wentworth Drive, Leyte Drive, Lindsay Road, Livingston Road, Wilson Towers Apartments, Kirby Hill Road, and Oxon Hill Road. The D14 portion between Suitland station and the intersection of Allentown Road & Temple Hill Road also remained the same, but remained along Allentown Road and operated to Hunters Mill Shopping Center via Tucker Road, Palmer Road, and Livingston Road, and was named as Route MD367.

D12 service between Southern Avenue station and the intersection of Indian Head Highway & Audrey Lane, and D14 service between Southern Avenue station and Oxon Hill Park & Ride was taken over by the proposed MD376 (Route W14) and MD377 (Route P18).

During WMATA's Revised Draft Visionary Network, WMATA renamed Route MD263 to Route P94, keeping the same routing from the visionary network proposal, except the Route would now serve National Harbor directly via Monument Avenue, National Harbor Boulevard, St. George Boulevard, and MGM National Avenue. Route MD264 was renamed to Route P96 and was changed to no longer loop around Marlow Heights Shopping Center, and was instead changed to operate on Silver Hill Road to serve Iverson Street, then was rerouted to take Deer Park Heights to St Clair Drive to serve Marlow Heights Shopping Center without having to loop around. The line would then operate along Olson Street and Raleigh Road before operating on the original proposed Route MD264 routing to Oxon Hill Park & Ride. The P96 would also operate on the D12's Birchwood City loop instead of the proposed MD265. Route MD367 was also retained and renamed to Route P87, but would instead operate along Brinkley Road to Oxon Hill Park & Ride via Oxon Hill Road.

The proposed route MD265 was merged with the proposed Route MD148 and renamed to Route P93. The new proposed P93 would operate on the proposed MD148 portion between Suitland station and Eastover Shopping Center via Silver Hill Road, Iverson Street, Iverson Place, Wheeler Road, Forest Hill Apartments, Southern Avenue SE, and Southern Avenue station (current Route P12), then operate on the proposed Route MD265 to National Harbor via Southview Drive, Iverson Street, Owens Road, Kennebec Street, Deal Drive, Audrey Lane, Eastover Shopping Center, Livingston Road, Oxon Hill Park & Ride, Monument Avenue, National Harbor Boulevard, and St. George Boulevard.

All changes were then proposed during WMATA's 2025 Proposed Network.

Following the 2025 Proposed Network, WMATA made more changes to the proposed P87, P93, P94, and P96. Route P94 was renamed to Route P90, which kept the same routing between Suitland station and King Street-Old Town station, with additional trips only operating between Suitland and Oxon Hill Park & Ride daily. Route P93 was modified to serve the Birchwood City loop and no longer operate to National Harbor, and kept the same routing between Suitland station and the intersection of Livingston Road & Birchwood Drive. A new Route P94 would operate on the same proposed routing that the P93 was originally supposed to operate between Suitland station and National Harbor. Both the P93 and P94 would have a combined frequency of 12 minutes daily between the two routes. Routes P87 and P96 would remain the same from the revised proposals.

On November 21, 2024, WMATA approved its Better Bus Redesign Network, with service on the College Park Line being simplified.

Beginning on June 29, 2025, the D12 kept its routing between Suitland station and Oxon Hill Road via St. Barnabas Road, but was changed to continue along Oxon Hill Road and serve Oxon Hill Park & Ride, National Harbor, and King Street–Old Town station, combining the route with the NH2, and was renamed into the P90. Service to Birchwood City was replaced by Route P93, which was a combination of the D12 and P12. Service to Marlow Heights Shopping Center was discontinued.

The D14 was modified into two routes. One of the new routes was renamed into the P96 and was partially combined with the H12 and had a modified routing between Oxon Hill Park & Ride and Haras Place Loop. The second route was renamed into the P87 and also operated between Suitland and Oxon Hill Park & Ride via the former D14 routing, except the route turns onto Brinkley Road and no longer operates along Temple Hills Road. The route remains straight along Brinkley Road before terminating at Oxon Hill Park & Ride.

Service to Southern Avenue station on both Routes D12 and D14 were discontinued.

References

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