mile markers

[nw-mailing-list at nwhs.org]

While studying the Data Series book on the Columbus District, I was wondering why the miles were from East Portsmouth in 1930, 0.0? 
 In 1945 they were from Portsmouth, 0.0 a differance of 1.8 miles.  Then in 1967 they were from Norfolk.  Then the mile marker mileage is differant than the miles from Norfolk, WHY???
Examples: 1930 Vera Junction 3.8 from E. portsmouth.  1945 1.12 from Portsmouth. 
1967, 567.5  miles from Norfolk, mile marker is 608.5.
WHY???


Jeff Wood
twlv18japie at earthlink.net
EarthLink Revolves Around You.
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