Chapter 5: Routes
Anchor: #i1020074Section 1: Key Points to Know
Anchor: #i1020079Why Add, Delete, or Update a Route?
TRM documents the current active designated highway network. This file is the sum of all the identifiable, individual segments of highways throughout the state. New construction or roadway maintenance adds mileage or transfers mileage to the off-system, and route realignment causes the alignment and length of the route to change; deleting the realigned route segment creates a roadway gap.
Anchor: #i1020117This Chapter
This chapter describes the placeholder reference markers and instructions for adding, updating, and deleting highway segments.
Anchor: #i1020132Office of Responsibility
TPP is the Office of Primary Responsibility (OPR) for adding, updating, and deleting all mileage segments documented in TRM.
Click this link for your district's TRM coordinator.
Anchor: #i1020158Process from Letting to Final Input
This table describes the normal series of events for documenting a new highway or highway segment in TRM:
|
Step |
Action |
|---|---|
|
1 |
The District lets the contract to construct the highway over its proposed location |
|
2 |
Using the construction plans, TPP inputs data to establish the route in the data file |
|
3 |
TPP and the responsible District office input all required data to fully document the route |
|
4 |
The District accepts the highway for maintenance after project completion |
|
5 |
TPP verifies all required data and sets the route as opened to traffic in TRM |
|
6 |
TPP inputs a separate transaction if the value for District-Id, County Number, Control-Section, or Maintenance District varies within this new section |
Anchor: #i1020172
Distance From Origin Defined
Distance from Origin (DFO) is a system-generated value of distance from any point on a given route back to the exact beginning point of the route. This length includes lengths of all route segments linked with local roads and other signed highways occurring up to that point. Length is valid from 0000.000 to 9999.999.
Anchor: #i1020188Distance Between Markers Defined
Distance Between Markers is a system-generated value of distance from one reference marker to another.
Anchor: #i1020198Placeholder Markers 0000 and 9999
The system creates records of placeholder markers 0000 and 9999 which mark the exact beginning and ending of a route segment, respectively. If legitimate markers reside at the exact beginning or ending of a route, the system does not create the respective placeholder record markers.
Example 1: Route SH 333 is 2.000 miles in length. Reference Marker 44 is located 0.525 miles from the origin of the route. Because Marker 44 does not reside at either the exact beginning or ending of the route, the system creates placeholder records using markers 0000 and 9999 for the exact beginning and ending:
|
Ref Mkr |
Distance from Origin |
|---|---|
|
0000 |
00.000 |
|
0044 |
00.525 |
|
9999 |
02.000 |
Example 2: Route FM 1431 is 5.500 miles in length. Marker 434 is located at the exact beginning of the route. Because of that, the system does not create a record using marker 0000, only a placeholder record using markers 9999 for the exact ending:
|
Ref Mkr |
Distance from Origin |
|---|---|
|
0430 |
00.000 |
|
9999 |
05.500 |
Example 3: Route BF 1605-C is 2.372 miles in length. The first marker on the route is marker 204 and is located 0.007 miles from the beginning of the route. Marker 206 is located at the exact ending of the route. Because of this, the system does not create a placeholder record using marker 9999 for the exact ending, only a placeholder record using 0000 for the exact beginning:
|
Ref Mkr |
Distance from Origin |
|---|---|
|
0000 |
00.000 |
|
0204 |
00.007 |
|
0206 |
02.372 |
Exception: Interstate Highways may have 0000 as a legitimate marker. However, TRM makes no distinction between placeholder 0000 and legitimate 0000. The TRM office of each district must keep track of the legitimate markers on Interstate routes.