Crosstown Line (Washington, D.C.)

On February 19, 1978 after Brookland–CUA station opened, routes H2 and H4 were diverted off Monroe Street to serve the new station. This gives residents access to the Red Line on its route. No route changes were made during its route.

On August 25, 1984, routes H2 and H4 were rerouted off Tenley Circle to serve Tenleytown–AU station in the middle of its route when it opened. No route changes were made on the route.[3]

Route H2 at Tenleytown–AU station

On September 18, 1999 after Columbia Heights station opened a series of changes were made to the H2 and H4.

Routes H2 was shorten to terminate at Van Ness–UDC station and route H4 was shorten to terminate at Tenleytown–AU station. Service to Westmoreland Circle and along Yuma Street was replaced by a new route N8 which will operate between Van Ness and Wesley Heights. This was due to resident complaint along Yuma Street and Tenleytown over H2 and H4 buses making loud noises along Yuma street causing noise pollution and damage to homes. The new N8 solves the noise complaint problem by using smaller and quieter 30 ft buses.[4]

Routes H2 and H4 were also shorten from Fort Lincoln to Brookland–CUA station with the portion between the two points was replaced by a new route H6 which operates on the former route H2 and H4 routing.

A new route H3 was introduced to operate alongside route H4 during the weekday peak-hours between Brookland and Tenleytown stations following route H2's routing in Mount Pleasant and route H4 routing along Porter Street and Wisconsin Avenue plus operating along Reno Road. The main difference is route H3 would not serve the Hospital Complexes along 1st street and instead remain along Michigan Avenue.

On June 25, 2000, route H3 was rerouted along the H4 routing on Mount Pleasant Street, Park and Klingle roads instead of operating along Adams Mill Road, Irving Street, and Harvard Street where the H2 operates.[5]

In 2010 during WMATA's FY2011 budget year, WMATA proposed to reroute route H2 back to Tenleytown–AU station discontinuing service to Van Ness–UDC station in order to replace route N8 which is proposed to be eliminated due to declining ridership. Route H2 would operate along Van Ness Street, Reno Road, Veazey Street, and Wisconsin Avenue. Route H3 would also be rerouted between the intersections of Porter Street & Reno Road NW and Wisconsin Avenue & Veazey Street NW via Porter Street and Wisconsin Avenue which follows the current H4 route. Alternative service along Connecticut Avenue to Van Ness will be available on routes L1, L2, and L4.[6]

On December 19, 2010, route H2 was rerouted to turn on Van Ness Street, Reno Street, Veazey Street, and Wisconsin Avenue to serve Tenleytown–AU station in order to replace the N8 routing along those streets which was shortened to Tenleytown station. Route H3 service was also rerouted to remain on Porter Street and turn onto Wisconsin Avenue and follow the H4 routing to Tenleytown station. Service along Reno Street where the H3 operated plus service to Van Ness–UDC station was discontinued. Routes L1, L2, and L4 took over the discontinued portion of the H2 along Connecticut Avenue but there was no alternative service is provided on Reno Street.[7] As of 2020, there has been no major changes to routes H2, H3, or H4.

In September 2013, during WMATA's FY2014 budget year, WMATA proposed to convert route H3 into a MetroExtra limited-stop route and extend the route to Rhode Island Avenue–Brentwood station via 12th street and Rhode Island Avenue. This was to provide a more direct connection between Rhode Island Ave station, the hospital center complex, and Columbia Heights and provide a faster ride across town by limiting the number of stops. The current H3 routing between Brookland and Tenleytown, weekday service frequency and span of service will remain unaffected. Route H3 will serve the following stops:[8]

• Rhode Island Avenue–Brentwood station
• Brookland–CUA station
• Michigan Avenue & 1st Street NW
• Georgia Avenue
• 11th Street
• 14th Street
• 16th Street
• Park Road & Mount Pleasant Street
• Porter Street & Connecticut Avenue
• Porter Street & Wisconsin Avenue
• Tenleytown–AU station

Existing local stops will still be provided by routes H2 and H4.