Wisconsin/County Highway Relations

Tagging information

County highways in Wisconsin have one-, two-, or three-letter designations preceded by CTH (for "County Trunk Highway"). Thus, an example of a reference for a county highway might be ref=CTH OSM.

Raw TIGER data generally does not include this designation as a reference (ref=*) tag, and often gives the letter designation in the main name tag (name=*). When this is encountered, first check the TIGER tags on the way to see if a local name exists in addition to the letter designation. If so, it is suggested to replace the main name value with the way's actual name, and add a ref=* tag in the standard form above. For instance, here is an example how a street named Western Road (part of Ozaukee County Highway T) appeared with raw TIGER tags, and how to correct it:

Example correction of TIGER tags for county highways

Raw tags			Corrected tags
highway=tertiary name=County Highway T name_1=Western Rd			highway=tertiary name=Western Road ref=CTH T

The tiger namespace tags (keys beginning with "tiger:") are not shown since they can be ignored. However, they sometimes can be useful to look at for additional information such as what the street's actual name is, when one exists.

Be aware that not all Wisconsin letter designated county roads have a road name drastically different from their designation. For example,"County Road O" is the postal street address name associated with this portion of County Trunk Highway O in Outagamie County. If you cannot find an alternate name, research to see if one exists, or in fact none exists, and tag accordingly.

Relations

At a minimum, all Wisconsin County Trunk Highway relations should contain the following tags and associated values:

Key	Value	Discussion
type=*	route	Required. This is a "route" relation (as opposed to other types of relations)
route=*	road	Required. This route is part of the roadway network for automobiles (as opposed to a bus route, hiking route, cycling route, etc.)
name=*	common name	Required. The full name for this county route. Almost all have the name/ format CountyName County Trunk Highway AAA. If a county has spaces, use them: Fond du Lac County Trunk Highway RP
network=*	US:WI:CountyName or US:WI:CountyName:Modifier	Required. Most in this list will have the route identifier US:WI:CountyName. Again if a county has a space, that's used here: US:WI:Fond du Lac County Trunk Highways that have route modifiers (Spur, Alternate, etc.) should have that included. Applicable examples include US:WI:CountyName:Spur, and US:WI:CountyName:Business.
is_in:state=*	WI	Required. All Wisconsin County Trunk Highways should be tagged with this value.
ref=*	reference letter or letters	Required. The route number. Examples: A, RP, ZZZ. If a route modifier exists (Spur, Truck, Alternate, etc.) it should not be present in this key. Instead, it should be incorporated into the 'modifier' key, and the 'network' key.
wikipedia=*	Wikipedia Page Title	Required if article exists. Nominatim uses the wikipedia key to weight/rank returned search results, so it's a good idea to include this. This being said as of this writing, no specific County Trunk Highway Wikipedia articles exist for Wisconsin, so in practice this tag will not be used.
symbol=*	url	Required if SVG file exists. The URL of a graphical representation of the route's symbol, in SVG format. See Wikimedia Commons: Wisconsin County Highway Shields for the list of available SVG files.
modifier=*	type	If applicable. Some routes have a "tab" (officially a "banner") attached to the route number that distinguishes it from other, related routes. Usually the text of the attached tab should be used; common examples as per taginfo include "Alternate", "Business", "Bypass", "Spur", "Scenic", "Toll", "Truck". Note that these values are capitalized! If the modifier tag exists, it should also be incorporated into the network tag.
direction=*	northsoutheastwest	If applicable. This tag is used on Wisconsin County Trunk Highways that are divided on the map along their entire length. These highways must have two separate route relations, one for each direction of travel. In such cases, the direction key should have a value of the the cardinal direction on the tab of the sign, and it should also be used in the relation's name; for example, the route relation for eastbound Brown County Highway G should be named Brown County Trunk Highway G east and should have the key and value direction=east. Note the signed direction may not directly match the compass direction of travel; the signed direction should be tagged.

Individual ways

At a minimum, all Wisconsin County Trunk Highway ways should contain the following tags and associated values:

Key	Value	Discussion
highway=*	type	Required. Depending on the functional classification of the road, this will be one of motorway, trunk, primary, secondary, tertiary, or unclassified.
ref=*	road	Required. Any way that is part of a Wisconsin county highway should have the reference CTH AAA as part of this field. In the case of route concurrencies, separate each with a semicolon, without spaces between the references. When two county highways share a way, it's suggested ordering them alphabetically, e.g. CTH A;CTH GG. When there is a modifier for the highway (Business, Truck, Spur, etc.) this should be appended to the end of the field, e.g. CTH F Business. Doing this allows mapping tools that do not yet understand route relations (above) to print something using the older per-way reference standard.
name=*	common name	Required. The common name for this portion of the county route as indicated by signs. When a local name does not exist for the way, the US Postal Service generally recognizes County Highway AAA or County Road AAA; check which is applicable. When a local name does exist, this field should be that name, e.g. Main Street.
Route relation	County route relation	Required. Each county route that this way is a part of should be a member of its respective route relation. If the way handles traffic in both directions, a role need not be assigned. If the way is handling traffic in only one direction (typical on divided highways or on highway links), then this way should be assigned the relation role north, south, east, or west, whichever signed direction of traffic the way handles for the route.
alt_name=*	County Highway AAA or County Road AAA	If applicable. If a local name exists for the way, you may wish to add County Highway AAA or County Road AAA as an alt_name in cases where postal addressing allows both. This should be checked on a per-way basis for validity.

Relations

County	Letter(s)	Relation	Progress and notes
Brown	U	4010084 4010084
	Z	4012031 4012031	Continues into Outagamie as 4012032 4012032
Dane	AB	4497581 4497581
	BB	4497613 4497613
	BW	4497648 4497648
	M	4500214 4500214
	MC	4497656 4497656
	Q	4497725 4497725
Dodge	D	5179708 5179708	Mostly in Washington as 5179657 5179657
Dunn	A	8662838 8662838
	B	8660016 8660016
	BB	8661410 8661410
	C	8662792 8662792
	D	8662794 8662794
	DD	7102333 7102333
	E	8662840 8662840
	EE	8663480 8663480
	F	8660038 8660038
	FF	8663490 8663490
	G	8662793 8662793
	H	8662842 8662842
	HH	8662841 8662841
	I	8662837 8662837
	K	8662836 8662836
	M	8662835 8662835
	N	8661411 8661411	Discontinuous? Continues into St. Croix as 8659941 8659941
	O	8661409 8661409
	P	8663441 8663441	Portions in Pierce as 8659926 8659926
Fond du Lac	B	148310 148310
	G	148311 148311
	RP	4037595 4037595	Not complete.
Grant	A	8725840 8725840
	B	8725915 8725915
	C	8725843 8725843
	D	8725916 8725916
	E	8725852 8725852
	F	8725850 8725850
	G	8725848 8725848
	H	8725914 8725914
	HH	8725903 8725903
	HHH	8725905 8725905
	J	8725912 8725912
	JJ	8725911 8725911
	K	8725851 8725851
	M	8725844 8725844
	N	8725908 8725908
	O	8725904 8725904
	P	8725842 8725842
	Q	8725849 8725849
	S	8725846 8725846
	T	8725847 8725847
	U	8725907 8725907
	V	121132 121132
	VV	8725910 8725910
	W	8725906 8725906
	X	8725841 8725841
	XX	8725918 8725918
	Y	8725909 8725909
	Z	8725902 8725902
	ZZ	8725901 8725901
Iowa	A	8728864 8728864
	B	8728860 8728860
	D	8728986 8728986
	DD	8728974 8728974
	E	8728984 8728984
	F	8728865 8728865
	G	8728990 8728990
	IG	8728989 8728989
	J	8728991 8728991
	K	8727904 8727904
	O	8728861 8728861
	Q	8728992 8728992
	QQ	8728987 8728987
	S	8728971 8728971
	U	8728972 8728972
	W	8728975 8728975
	X	8728983 8728983
	XX	8728995 8728995
	Y	8728866 8728866
	YD	8728985 8728985
La Crosse	A	8665048 8665048
	AE	8665054 8665054
	B	8669398 8669398
	BW	9357001 9357001
	C	8665049 8665049
	CO	9357231 9357231
	D	8665057 8665057
	DD	8669272 8669272
	DE	8669276 8669276
	DH	8665058 8665058
	E	8669277 8669277
	EE	8665053 8665053
	F	8669261 8669261
	FA	8669260 8669260
	FO	8669262 8669262
	G	8669251 8669251
	GI	8669259 8669259
	H	8669250 8669250
	HD	8669266 8669266
	I	8664694 8664694
	II	8664695 8664695
	J	8669254 8669254
	JB	8664697 8664697
	JJ	8664696 8664696
	K	8665060 8665060
	M	8664725 8664725
	MH	8669265 8669265
	MM	8669248 8669248
	N	8669256 8669256
	NN	8664726 8664726
	OA	8669263 8669263
	OS	8669252 8669252
	P	8669257 8669257
	PH	8669270 8669270
	PI	8669249 8669249
	Q	8665056 8665056
	S	8665050 8665050
	SN	8665059 8665059
	SS	8669369 8669369
	T	8669274 8669274
	TA	8665055 8665055
	TT	8669273 8669273
	U	8665077 8665077
	V	8665075 8665075
	VP	8669282 8669282
	VV	8665076 8665076
	W	8669275 8669275
	X	8669258 8669258
	XX	8664724 8664724
	Y	8669253 8669253
	YY	8669264 8669264
	Z	8669270 8669270
	ZB	8669269 8669269
	ZN	8669268 8669268
	ZZ	8669267 8669267
Langlade	M	4018919 4018919
	P	4018916 4018916
Lincoln	X	116322 116322
Milwaukee	S	1663031 1663031
Outagamie	A	4009382 4009382
	AA	4012060 4012060
	B	4012399 4012399
	BB	4012052 4012052	Lies on the Outagamie-Winnebago county line.
	C	4010059 4010059
	CA	4012036 4012036
	CB	4012037 4012037	Continues into Winnebago as 4012038 4012038
	CC	4012072 4012072
	CE	4012035 4012035	Small part extends into Brown county.
	D	4009480 4009480	Largely on the Outagamie-Waupaca county line.
	DD	4009490 4009490
	E	4009349 4009349
	EE	4009341 4009341
	F	4010154 4010154
	FF	4010155 4010155
	G	4010075 4010075
	GG	4012012 4012012
	GV	1077642 1077642
	H	4011991 4011991
	HH	4012033 4012033
	I	8705340 8705340	Continues into Waupaca as 4011443 4011443
	J	4012068 4012068
	JJ	4009384 4009384
	K	4012034 4012034
	KK	3854061 3854061
	M	4009440 4009440
	MM	4012053 4012053
	N	4012056 4012056
	NC	4015584 4015584
	O	4009387 4009387
	OO	4012064 4012064
	P	4012488 4012488
	PP	4012042 4012042
	Q	4012078 4012078
	S	4009524 4009524
	T	3837964 3837964
	TT	3855513 3855513
	U	4011993 4011993
	UU	4012080 4012080
	VV	4010060 4010060
	W	4009489 4009489
	WW	4009483 4009483
	X	4010081 4010081
	XX	4010125 4010125
	Y	4010061 4010061
	Z	4012032 4012032	Continues into Brown as 4012031 4012031
	ZZ	4012004 4012004
Ozaukee	NN	5179559 5179559	Continues into Washington as 5179557 5179557
Pepin	CC	7101944 7101944	Continues into Pierce as 8659495 8659495
	SS	7102317 7102317	Continues into Pierce as 8659488 8659488
Pierce	A	8659937 8659937
	AA	8659954 8659954
	B	8659945 8659945	Continues into St. Croix as 6330860 6330860
	BB	8659944 8659944	Continues into St. Croix as 6330861 6330861
	C	8659490 8659490
	CC	8659495 8659495	Continues into Pepin as 7101944 7101944
	D	8659486 8659486
	DD	8659489 8659489
	E	8659931 8659931
	EE	8659936 8659936
	F	8659942 8659942	Continues into St. Croix as 6330879 6330879
	FF	8659943 8659943
	G	8659939 8659939
	I	8659940 8659940
	H	8659927 8659927
	HH	8659929 8659929
	I	8659940 8659940
	J	8659947 8659947
	K	8659935 8659935
	KK	8659934 8659934
	MM	6333274 6333274
	N	8659941 8659941
	O	8659484 8659484
	OO	8659481 8659481
	P	8659926 8659926	Mostly in Dunn as 8663441 8663441
	PP	8659938 8659938
	QQ	8659483 8659483
	S	8659494 8659494
	SS	8659488 8659488	Continues into Pepin as 7102317 7102317
	U	8659485 8659485
	UU	8659487 8659487
	V	8659933 8659933
	VV	8659930 8659930
	W	8659932 8659932	Continues into St. Croix as 6336300 6336300
	X	8659928 8659928
	Y	8659946 8659946	Continues into St. Croix as 6336336 6336336
	Z	8659493 8659493
	ZZ	8659491 8659491
Saint Croix	A	3126079 3126079
	B	6330860 6330860	Continues into Pierce as 8659945 8659945
	BB	6330861 6330861	Continues into Pierce as 8659944 8659944
	C	6330868 6330868
	CC	6330869 6330869
	D	6330882 6330882
	DD	6333184 6333184
	E	6330793 6330793
	F	6330879 6330879	Continues into Pierce as 8659942 8659942
	FF	6330880 6330880
	G	6330795 6330795
	GG	6333218 6333218
	H	6330887 6330887
	I	6330794 6330794
	J	6333171 6333171
	JJ	6333259 6333259
	K	6333172 6333172
	KK	6333173 6333173
	M	6333260 6333260	Discontinuous? Runs along Pierce County line, portions within Pierce County.
	MM	6333274 6333274
	N	6333492 6333492	Continues into Dunn as 8661411 8661411
	NN	6333493 6333493
	O	6333494 6333494
	P	6333499 6333499
	Q	6333580 6333580
	S	6333581 6333581
	SS	6333582 6333582
	T	6333662 6333662
	TT	6333663 6333663
	U	6333670 6333670
	UU	6333672 6333672
	V	6336289 6336289
	VV	6336306 6336306
	W	6336300 6336300	Continues into Pierce as 8659932 8659932
	X	6336309 6336309
	Y	6336336 6336336	Continues into Pierce as 8659946 8659946
	YY	6336341 6336341
	Z	6336342 6336342
Sauk	B	4004720 4004720	Not finished past Plain, WI. Continues to Sauk County/Richland County line.
	C	4004284 4004284
	D	4004285 4004285
	DD	4004998 4004998
	E	4004995 4004995
	I	4004287 4004287
	O	4004719 4004719
	PF	4004283 4004283
	W	4004286 4004286
Sheboygan	A	148317 148317
	CC	1345821 1345821
	F	148313 148313
	I	1345820 1345820
	V	148299 148299
	W	148315 148315
Walworth	O	116345 116345
Washington	C	5179569 5179569
	D	5179657 5179657	Small part extends into Dodge County as 5179708 5179708
	G	5179625 5179625
	I	5179599 5179599
	MY	5179835 5179835
	NN	5179557 5179557	Continues into Ozaukee as 5179559 5179559
	P	5179585 5179585
	PV	5179634 5179634
	W	5179723 5179723
	WW	5179715 5179715
	Z	5179568 5179568
Waupaca	BH	4015876 4015876
	D	4009480 4009480	Largely on the Outagamie-Waupaca county line.
	H	3855546 3855546
	I	4011443 4011443	Small part extends into Outagamie county as 8705340 8705340
	W	3855488 3855488
Winnebago	AP	1082752 1082752
	BB	4012052 4012052	Lies on the Outagamie-Winnebago county line.
	CB	4012038 4012038	Continues into Outagamie as 4012037 4012037