1 MARCH 2000
Number of Xings
Number of Welds
Rebuild Type Key
CA Timber/Asphalt crossing surface with complete track rebuild.
A - Timber/Asphalt crossing surface replacement.
G - Timber/Gravel crossing surface replacement.
The timber portion of the crossing surface refers to timber head boards installed along
the gage side (or both sides) of the of the rail. Timber head boards help keep the
flangeways clear, reduce intrusion of road material into the track, and lessen the lateral
rail impact from vehicle traffic.
Note: The following unit costs were used for crossing work:
Timber/Asphalt crossing with complete track rebuild, 5/foot.
Timber/Asphalt crossing surface replacement, /foot.
Timber/Gravel crossing surface replacement, /foot.
Joint welds, 0 each.
6) Tie Replacement
This estimate provides for ties primarily in the areas that were not covered in the previous tie replacement
program. Generally, the limits are the same as specified for ballast and surfacing. The number of ties
estimated is intended to allow the installation track to maintain sufficient tie condition for 5 more years
before another tie program is required. (Although during the next 5 years, some spot tie replacement will
probably be needed).