DCHP-1 Online
river road 
a route following the course of a frozen river.
See also: ice-road (def. 2)
- 1829 When the snow falls deep, before the ice has had time to freeze to any considerable thickness, the river roads remain dangerous all the season; because after they have got their covering of snow, say three feet deep, the ice below cannot continue to thicken by the frost.
- 1955 Some experienced travellers on the river-roads even carried "choke-ropes."
- 1829 When the snow falls deep, before the ice has had time to freeze to any considerable thickness, the river roads remain dangerous all the season; because after they have got their covering of snow, say three feet deep, the ice below cannot continue to thicken by the frost.