ALN

Photogrammetry alignment. Note: Roadway Design does not normally reference .aln files to plan sheets.

PLN

Existing Topo Obsolete

DGN

Existing Property

TSH

Title Sheet

TYP

Typical Sections and other Sheet 2 details.

SUM

Summary Sheets (Sheet 3-A and greater). This includes Guardrail, Drainage, Pavement Removal, and Earthwork Summary Sheets.

DSN

Proposed Design (formerly dgn). This includes Proposed Alignments, EOP's, C&G, etc.

DRN

Proposed Drainage Obsolete

ROW

Proposed Right-of-Way

PSH

Plan Sheets. This includes Combination Plan/Profile Sheets.

DTL

Detail Sheets Obsolete
For new projects, we no longer recommend the .dtl extension for detail sheets. This is primarily because the .dtl extension is now being used for dtm files coming from Location & Surveys. Please use the .psh extension for all plan sheets.

LAY

Plan Sheet Layout Obsolete

PFL

Profile Sheets Obsolete

DET

Detour Design Obsolete

PAT

Pattern Lines

SHP

Shape File

EOP

Edge of Pavement File. Note: This file is usually made by copying level 3 out of the pln files and deleting unnecessary elements. It is then utilized by criteria to determine the edge of pavement for widening templates.

SS

Temporary Slope Stake File

XSC

Cross-Sections (to be used with GEOPAK).

XPL

Cross-Section Layout (to be plotted).

SPD

Shear Point Diagram.

TCP#

Traffic Control Plans (# is replaced w/sheet number beginning with 1) Obsolete

PMP#

Pavement Marking Plans (# is replaced w/sheet number beginning with 1) Obsolete

ext, ex1, ex2, . . .

Extended Surveys from Location Obsolete

rev, re1, re2, . . .

Revised Topo from Photogrammetry Obsolete

UTL

Utility Files Obsolete

Shp

GEopak Shape file.

PHM

Public hearing map

REC

Structure Recommnended.

svy-req

Survey required.

COR

Corridor map

DTL

Detail Sheet.

EST

Estimate Shape

ggc

Geopak graphical criteria

PHM

Public Hearing Map

PRB

Project Breakdown Maps

TOP

Contour Lines and Planimetrics

PMM

Planimetric Mapping - Photogrammetry

RDF

Raster Design File

DTM

Digital Terrain Model (from Photogrammetry)

DTL

Digital Terrain Model (from Location and Surveys)

TRI

Triangle File

CON

Contour File