The Collaborative International Dictionary of English v.0.48:

Roadway \Road"way`\ (r[=o]d"w[=a]`), n.
   A road; especially, the part traveled by vehicles. --Shak.
   [1913 Webster]

WordNet (r) 3.0 (2006):

roadway
    n 1: a road (especially that part of a road) over which vehicles
         travel

Moby Thesaurus II by Grady Ward, 1.0:

117 Moby Thesaurus words for "roadway":
   Autobahn, L, US highway, alley, alleyway, arterial,
   arterial highway, arterial street, artery, autoroute, autostrada,
   avenue, belt highway, blind alley, boulevard, branch, bypass,
   byway, cable railway, camino real, carriageway, causeway, causey,
   chaussee, circumferential, close, cog railway, corduroy road,
   county road, court, crescent, cul-de-sac, dead-end street, dike,
   dirt road, drive, driveway, el, electric railway, elevated,
   elevated railway, embankment, expressway, feeder, feeder line,
   freeway, gravel road, gravity-operated railway, highroad, highway,
   highways and byways, horse railway, interstate highway, junction,
   lane, light railroad, line, local road, main drag, main line,
   main road, metro, mews, monorail, motorway, parkway, pave,
   paved road, pike, place, plank road, primary highway, private road,
   rack railway, rack-and-pinion railway, rail, rail line, railroad,
   railway, right-of-way, ring road, road, roadbed, route nationale,
   row, royal road, secondary road, sidetrack, siding, speedway,
   state highway, street, street railway, streetcar line, subway,
   superhighway, switchback, terminal, terminus, terrace,
   thoroughfare, through street, thruway, toll road, township road,
   track, tram, tramline, trestle, trolley line, trunk, trunk line,
   tube, turnout, turnpike, underground, wynd