baltimore washington parkway baltimore referred parkway highway state maryland running southwest baltimore washington road begins interchange near border continues northeast parkway maintained national_park_service near serving federal institutions portion parkway dedicated noon representative maryland 5th congressional district unsigned maryland route designation commercial vehicles including trucks prohibited stretch section administered unit leaving park service boundaries highway maintained state signed designation section parkway passes near baltimore marshall airport entering baltimore takes maintenance road continues north interchange interstate baltimore washington parkway ends continues north unsigned russell street carries route north downtown baltimore downtown baltimore follows street northbound southbound ending plans parkway linking baltimore washington date original layout 18th century fully develop 1920s major reasons surrounding need parkway included high accident rates adjacent defense purposes world war plans design parkway finalized construction began state maintained portion maintained segment entire parkway opened traffic stages following completion parkway suburban growth took place washington baltimore 1960s 1970s plans segment parkway owned state possibly came entire road today designated despite signed state portion 1980s 2000s portion road modernized process widened lanes widening new interchange segment planned future route description segment parkway begins large hybrid cloverleaf outside washington boundary maryland maintained routes converge southern western ends interchange heads west washington begins line northernmost tip avenue freeway continues district_of_columbia continues east interchange john highway freeway continues north avenue surface road closely parallels parkway east past interchange portion parkway southern terminus maintained national_park_service continues north lane limited access parkway unsigned designation containing brown signs featuring section parkway commercial vehicles trucks prohibited buses allowed parkway heads wooded surroundings near industrial areas passes ramp southbound southbound parkway continues northeast passing near interchanges road road historical waterfront town consists houses dating century continues north lane road wide tree filled median passes woodland residential neighborhoods hidden trees road junction road west route provides access towns features mansion named surrounded suburban development buildings dating railroad days 1870s automobile days early 20th century north route runs near residences entering suburban garden community built model green town new deal program 1930s park jurisdiction nearest public camping area washington northeastern corner park baltimore comes interchange interchange place park service green signs past route heads heart city having interchange road headquarters patrol portion parkway located exit provides access home airport taught fly airplane public educational institution established northern edge town route employee access space flight center nasa space flight center opened contributed space missions route enters largest agricultural research center world owned parkway interchange center powder mill road south outside parkway comes laurel road south laurel near exit parkway mansion georgian mansion built major past road passes western edge wildlife center established president crossing parkway continues northeast dense woodland comes exit road east laurel suburb originated 1830s mill town contains historical sites today train queen anne house 1840s house home continuing north parkway encounters savage road near offers northbound travelers direct access fort interchange employee access road features southbound exit northbound entrance military installation opened trained million troops world war major fort west parkway operating cotton mill currently antique mall cast wrought iron bridge ohio railroad csx line baltimore washington interchange road continues cloverleaf interchange road maintenance parkway comes end south end interchange maryland route past junction signage begins road continues north lane grade separated freeway maintained truck ban ends section road features standard green signage heads wooded areas comes mills boulevard provides access mills shopping mall diamond past interchange comes cloverleaf interchange continuing northeast route curves northwest baltimore washington international airport largest airport maryland passing near industrial park reaching main access road airport interchange passing road crosses amtrak northeast corridor westbound provides access baltimore washington parkway thomas carries railroad line acre km2 state park preserves valley recreational purposes northeast track route widens lanes intersects near adjacent past west nursery road road meets cloverleaf interchange turning north route passes nursery road crossing crossing reaches partial interchange access northbound northbound southbound southbound past road continues wooded surrounding residential developments trees entering city baltimore baltimore continues limited access freeway maintained surrounded trees urban residential industrial neighborhoods nearby road avenue city line running north parkway soon reaches northern terminus limited access freeway lane divided city street called russell street continues northeast russell street unsigned remainder route mix industrial commercial areas heading northwest casino baltimore farther north street passes west baltimore national_football_league play past road features interchange boulevard south russell street interchange runs west home major_league_baseball baltimore_orioles lane divided street immediately splits way pair intersection washington boulevard northbound traffic following street southbound traffic following street way pair route intersects major streets downtown baltimore including street baltimore street street street passes street baltimore street baltimore street street burying ground corner street street passes building north street north street historic street laundry company building north intersection street intersection lexington street officially ends follows street eastbound franklin street westbound downtown baltimore continues north northern terminus following street northbound pennsylvania avenue southbound history planning plans parkway connecting baltimore washington date 1920s system initially included layout 18th century later governor maryland called parkway constructed early proposals involved route followed north east lack funding led simpler plans widen instead 1930s new deal programs president led heightened awareness parkway proposals report increased awareness increasing accident levels called deadliest roads world time awareness need national defense world war provided additional motivation construction parkway began process start construction design parkway federal state officials commissioned firm create designs parkway included large junction southern terminus connect proposed northern end included similar end running end crossing modified current configuration construction construction northern portion highway began state maryland construction segment started land portion built acquired time park jurisdiction state maintained portion completed december baltimore city line portion parkway city baltimore opened maintained portion opened october portion road maintained known baltimore section maintained called baltimore post construction time highway completed federal government began promote moving federal agencies capital order protect nuclear attack result suburban neighborhoods began appear laurel addition road prime route washington baltimore leading suburban growth eventually cause distinct cities merge large metropolitan area national_park_service predecessor created tentative plans transfer segment parkway state maryland rebuild modern freeway standards trucks buses permitted plan collapsed state reluctance spend money necessary reconstruct parkway dangerous roads road system proposed parkway included designated interstate anticipation completion parallel running occurred designation granted later withdrawn current portion signed lack funds available route result withdrawal interstate designation parkway remained road south portion north despite setback plans existed widen parkway lanes federal highway act provided million equivalent million purpose funding insufficient execute projects cancellation routing offered chance modernization plans existed route parkway happen trucks banned parkway designated baltimore baltimore designated state maintained portions expressway replacing designation 1990s portion road known baltimore known baltimore mid-1980s national_park_service began reconstruction segment road including improvement interchanges federal government completed project reconstruction interchange maryland governor announced plans widen portions near baltimore washington international airport widened parkway lanes lanes north construction million project began late completed late widening use median extra travel lanes added inside closed southbound ramps interchange baltimore mills boulevard starting monday closure replacement existing interchange maryland diamond interchange new interchange million road upgrades funded ahead june opening company development features casino near new interchange opened june maintained section baltimore named honor noon represented maryland 5th congressional district january january bill introduced united_states senate senator signed law educator woman serve county suffered heart attack ended congressional career october leaving coma death june baltimore listed national_register_of_historic_places incidents built parkway east laurel collapsed rush hour injuring fourteen motorists construction workers incident blamed faulty support span july opened beneath parkway construction site leading complete closure northbound roadway filled concrete shore prevent collapse attempted repairs route remained closed day august directions parkway closed concrete fell road northbound lanes renovation planned widened lanes new interchange planned constructed road type interchange decided choices including diamond interchange single point urban interchange modified cloverleaf interchange planning million project concluded exit list
Baltimore–Washington Parkway