two very over built roads in Washington DC... Porter Street and Military Road... not bicycle friendly at all... they are like highways bisecting the city...

Military Road and Porter Street are "over built" in the areas where they cross Rock Creek Park

these roads seem as if they were designed by someone in an office that never took a visit to the area where the roads were to be being built

the roads has low maximum speed limits but have highway style barriers for higher speed driving

these are major cross town ventricles

cyclists cross town too

but these roads are not bike friendly

Military Road being way worse than Porter Street

traffic on these roads does exist

making the roads more narrow and putting in a separated bike lane would not alter the flow of traffic for cars

but would benefit the growth of cycling in this area 

it is tough to cross Rock Creek Park

these are the main passages