Field Name

Type

Size

Description

Comments

fnode#

B

4

From node number

ARC/INFO when topology is edited and coverage is built.

tnode#

B

4

To node number

lpoly#

B

4

Left polygon number

Polygon topology has not been built. All values are equal to zero.

rpoly#

B

4

Right polygon number

length

F

4

Arc length (in feet)

Values are automatically updated as coverage is edited.

Field Name

Type

Size

Description

Comments

<pre>mgf1#

B

4

ARC/INFO Internal ID

Arc/node topology has been built. Unique IDs are automatically updated in ARC/INFO when topology is edited and coverage is built.

<pre>mgf1-id

B

4

ARC/INFO User ID

Set equal to the ARC/INFO Internal ID. Values remain static even when topology is edited and the coverage is built. Values may be manually updated.

<pre>mir_pid

N

13

Parent ID of SEMCOG MIRIS

Relate item to the SEMCOG MIRIS coverage prior to conflation. ID is not unique. This field has a field name alias called mali-id.

tlid

I

10

Parent ID of SEMCOG TIGER

Relate item to the SEMCOG TIGER coverage prior to conflation. ID is not unique.

tlid_old

I

10

Parent ID of 1994 TIGER Line File

Relate item to the 1994 TIGER Line File prior to conflation. ID is not unique.

mgfver1-id

B

4

MGF Version 1.0 ID

Static unique ID used to relate back to this coverage if copied or edited.

network-id

I

10

Transportation Network ID

Relate item for TranPlan modeling and the Transportation Systems Monitoring (TSM) file.

Field Name

Type

Size

Description

Comments

version

I

4

Version release of the 1994 TIGER File

Values only on arcs where TIGER attributes transferred over. All non-zero values are equal to 21.

source

C

1

Building Operations

Values only on arcs where TIGER attributes transferred over.

tigup

I

10

500 - New TIGER arc split

Values only on arcs where TIGER attributes transferred over.

<pre>mir_vs

N

13

arc appended to MIRIS

Indicates if and how TIGER attributes were transferred over.

semupdate

I

3

31 - Original MIRIS road arc split

Field Name

Type

Size

Description

Comments

level

I

2

99 - MIRIS road

Derived from the MIRIS level number. All arcs have been attributed. Values have been reconciled with CFCC values.

cfcc

C

3

H40 + Other Hydrography

All arcs have been attributed. Values have been reconciled with level values.

symbol

I

3

Line symbol

May be used as the line symbol item in ARC/INFO to display arcs in different line types and/or colors.

Field Name

Type

Size

Description

Comments

fedirp

C

2

Feature prefix direction

Nearly all named road arcs follow USPS street naming standards.

fename

C

30

Feature name

fetype

C

4

Feature type

fedirs

C

2

Feature suffix direction

fedirp2

C

2

Secondary feature prefix direction

(e.g., Ford Fwy for I-94 Fwy).

fename2

C

30

Secondary feature name

fetype2

C

4

Secondary feature type

fedirs2

C

2

Secondary feature suffix direction

new_st

C

21

New street name

Additional street name information. This field may be used to further verify the correctness of primary road names.

Field Name

Type

Size

Description

Comments

fraddl

I

11

Left side from address

Potential address ranges transferred from SEMCOG Updated TIGER.

toaddl

I

11

Left side to address

fraddr

I

11

Right side from address

toaddr

I

11

Right side to address

zipl

I

5

Left side ZIP code

ZIP codes transferred from SEMCOG Updated TIGER. ZIP codes do not form closed polygon boundaries.

zipr

I

5

Right side ZIP code

Field Name

Type

Size

Description

Comments

fairl

I

5

Left side American Indian / Alaska Native Area

American Indian / Alaska Native Areas do not exist in Southeast Michigan; therefore, all values are equal to 0.

fairr

I

5

Right side American Indian / Alaska Native Area

statel

I

2

Left side state code

Although statel and stater values exist, this polygon boundary will be closed after seeming together all counties of the State.

stater

I

2

Right side state code

countyl

I

3

Left side county code

County boundaries may be displayed by selecting countyl <> countyr. The county polygon boundary has been closed. All arcs have been assigned countyl and countyr values.

countyr

I

3

Right side county code

fmcdl

I

5

Left side FIPS MCD code

Minor Civil Division (MCD) boundaries may be displayed by selecting fmcdl <> fmcdr. The MCD polygon boundaries have been closed. All arcs have been assigned fmcdl and fmcdr values.

fmcdr

I

5

Right side FIPS MCD code

fsmcdl

I

5

Left side FIPS sub-MCD code

Sub-MCDs do not exist in Southeast Michigan; therefore, all values are equal to 0.

fsmcdl

I

5

Right side FIPS sub-MCD code

fpll

I

5

Left side FIPS place code

Place boundaries (villages) may be displayed by selecting fpll <> fplr. The place polygon boundaries have been closed. All arcs have been assigned fpll and fplr values.

fplr

I

5

Right side FIPS place code

Field Name

Type

Size

Description

Comments

uscl

C

2

Left side U.S. Congressional district

Although uscl and uscr values exist, these polygon boundaries have not yet been closed. All arcs will be assigned with uscl and uscr values after the boundaries have been closed.

uscr

C

2

Right side U.S. Congressional district

stsl

C

2

Left side Michigan State Senate district

Although stsl and stsr values exist, these polygon boundaries have not yet been closed. All arcs will be assigned with stsl and stsr values after the boundaries have been closed.

stsr

C

2

Right side Michigan State Senate district

sthl

C

3

Left side Michigan State House district

Although sthl and sthr values exist, these polygon boundaries have not yet been closed. All arcs will be assigned with sthl and sthr values after the boundaries have been closed.

sthr

C

3

Right side Michigan State House district

ccdl

C

2

Left side County Commissioner district

Although ccdl and ccdr values exist, these polygon boundaries have not yet been closed. All arcs will be assigned with ccdl and ccdr values after the boundaries have been closed.

ccdr

C

2

Right side County Commissioner district

sdl

C

5

Left side school district FIPS code

Although sdl and sdr values exist, these polygon boundaries have not yet been closed. All arcs will be assigned with sd and sdr values after the boundaries have been closed.

sdr

C

5

Right side school district FIPS code

pctl

C

14

Left side precinct

Although pctl and pctr values exist, these polygon boundaries have not yet been closed. All arcs will be assigned with pctl and pctr values after the boundaries have been closed.

pctr

C

14

Right side precinct

sdpl

C

6

Left side school district precinct

The attributes of sdpl and sdpr have not yet been attributed.

sdpr

C

6

Right side school district precinct

vpl

C

2

Left side village precinct

vpr

C

2

Right side village precinct

Field Name

Type

Size

Description

Comments

ctbnal

C

6

Left side Census Tract/BNA code

Although ctbnal and ctbnar values exist, these polygon boundaries have not yet been closed. All arcs will be assigned with ctbnal and ctbnar values after the boundaries have been closed.

ctbnar

C

6

Right side Census Tract/BNA code

blkl

C

4

Left side Census tabulation block no.

blkr

C

4

Right side Census tabulation block no.

Field Name

Type

Size

Description

Comments

pr95

I

8

1995 Primary/Physical Route/Road

PR values from the 1995 MALI table were added to SEMCOG MIRIS where possible. New PRs values were then added to road arcs without a PR value. All road arcs with a PR value are named. These PR values should be used with pre-1995 and 1995 MALI-referenced data.

frmp95

N

8.3

1995 From milepost

tomp95

N

8.3

1995 To milepost

pr

I

8

Primary/Physical Route/Road ID number

MDOT’s standards for the Linear Referencing System requires that PRs are continuous without gaps or overlaps in mileposting. These PR values are the same as pr95 except where PRs needed to be reassigned in order to follow MDOT’s standards.

frmp

N

8.3

From milepost

MDOT’s standards for the Linear Referencing System requires that PRs are continuous without gaps or overlaps in mileposting. These milepost values are the same as frmp95 and tomp95 except where PRs needed to be reassigned in order to follow MDOT’s standards.

tomp

N

8.3

To milepost

travel_dir

I

3

2 - two-way road arc

All arcs in the transportation network (network-id > 0) and all known boulevard arcs will have a travel direction code assigned.

blvd_num

I

3

Boulevard code number

Values greater than zero signify known boulevard arcs in addition to those already in the Transportation network.

travel_mp

I

3

on a one-way road arc

Dynamic segmentation in ARC/INFO requires that arcs are oriented in mileposting direction. This file follows this criteria. The field travel_mp identifies arcs whose mileposting direction is known to be opposing travel direction on one-way roads (important for TranPlan modeling).

Field Name

Type

Size

Description

Comments

mdotcs

I

7

Control section value

Item has not been maintained by SEMCOG.

cs_seq

I

11

Control section sequence number

Item has not been maintained by SEMCOG.

ramp-id

C

6

Ramp identification number

Item has not been maintained by SEMCOG.

I

5

Transportation network from node no.

Items used in TranPlan modeling and in the Transportation Systems Monitoring (TSM) file.

bnode

I

5

Transportation network to node no.

abnode

C

10

Transportation network link ID

Redefined item that is a concatenation of anode and bnode values.