The Collaborative International Dictionary of English v.0.48:

Causeway \Cause"way\ (k[add]z"w[asl]), Causey \Cau"sey\
   ((k[add]"z[y^]), n. [OE. cauci, cauchie, OF. cauchie, F.
   chauss['e]e, from LL. (via) calciata, fr calciare to make a
   road, either fr. L. calx lime, hence, to pave with limestone
   (cf. E. chalk), or from L. calceus shoe, from calx heel,
   hence, to shoe, pave, or wear by treading.]
   A way or road raised above the natural level of the ground,
   serving as a dry passage over wet or marshy ground.
   [1913 Webster]

         But that broad causeway will direct your way. --Dryden.
   [1913 Webster]

         The other way Satan went down
         The causey to Hell-gate.                 --Milton.
   [1913 Webster] Causewayed

U.S. Gazetteer Places (2000):

Causey, NM -- U.S. village in New Mexico
   Population (2000):    52
   Housing Units (2000): 23
   Land area (2000):     3.071675 sq. miles (7.955601 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    3.071675 sq. miles (7.955601 sq. km)
   FIPS code:            12850
   Located within:       New Mexico (NM), FIPS 35
   Location:             33.849921 N, 103.103811 W
   ZIP Codes (1990):     88113
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Causey, NM
    Causey