Missouri state highways

The Missouri state highway system, maintained by the Missouri Department of Transportation (MoDOT), is comprised of interstate highways, U.S. numbered highways, and state routes (also called state highways). All such highways in Missouri should be mapped with route relations according to the established tagging consensus for the specific network: interstate highway route relations, U.S. numbered highway route relations, or Missouri state route relations. This article specifically covers Missouri state routes.

State Routes

Each state route in Missouri can generally be classified into one of two categories: numbered or lettered.

Numbered routes

The numbered routes are generally aligned so that even numbers run east and west while odd numbers run north and south, but Route 112 is a notable exception to this rule. (If there are more exceptions, add them here.) Shield signs along the numbered routes feature the route number on a white silhouette of Missouri with a black background. A wide variant of the shield is used for three-digit route numbers. Route relations for non-special numbered Missouri routes use network=US:MO.

• 

  Shield for Route 2

• 

  Shield for Route 141

Lettered routes

The lettered routes, formally known as supplemental routes, are more irregularly aligned than the numbered routes. This is because their alignments were typically chosen for county roads that were taken over by the state in an effort to provide "a state-maintained road within at least 2 miles of more than 95 percent of all rural family units - a family unit being a farm home, school, church, cemetery or store." As of July 2023, the state maintains 2,660 lettered routes (19,010 miles total). Many of these lettered routes are undivided two-lane highways, especially in rural areas. According to MoDOT, double-letter routes are usually farm-to-market routes that "end at county roads" or that are "former alignments of other highways". The letters G, I, L, Q, and S are avoided. When the letter R is used the route connects to a state park or another recreational place (Route AR, a non-recreational route south of Bakersfield, is the only exception to this.). Shields for the lettered routes feature the route letters on a white rectangle with a black border. A wide variant of the shield is used for double-letter routes. Route relations for lettered Missouri routes use network=US:MO:Supplemental or network=US:MO:Supplemental:Spur for lettered spur routes (not to be confused with the lettered branch routes 64A or 64B).

• 

  Shield for Route B

• 

  Shield for Route FF

• 

  Routes B and FF concur in Nodaway County

• 

  Spur Route N splits from Route N in Cedar County

Relations

All relations should use this scheme. In particular, tag the relation with these tags:

Key	Value	Explanation
name	Missouri Route #	(required) The hashtag represents the route number/letter. If it is a special route (alternate, business, spur), put the modifier after the route number/letter along with the city name in parentheses. Lettered/supplemental routes should also have the name of the county(s) (alphabetical order) in parentheses. Examples: "Missouri Route 13", "Missouri Route 13 Business (Lexington)", "Missouri Route D (St. Louis City County/St. Louis County)", and "Missouri Route K Spur (Cass County)". Sometimes, a supplemental route will be repeated in a county, so you have to add an extra directional suffix. Example: "Missouri Route Z (Randolph County) (East)". The county(s) for each lettered route is shown in the completion tables below, but not all routes have been added to the table yet.
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.)
network	US:MO	(required) This route is a Missouri state route, one that is signed with numbers. For supplemental routes (ones that use letters, e.g. Route MM) use 'US:MO:Supplemental'. For business routes use 'US:MO:Business', for alternate routes use 'US:MO:Alternate', and for spur routes use 'US:MO:Spur'.
ref	xx	(required) The route number/letter, e.g. '13' or '291' or 'B'
symbol	url	(optional) A URL to an image of the route 'shield', preferably an SVG image. You can find these in Wikimedia Commons, just follow the link to Wikipedia in the table below and use the image. Example: http://upload.wikimedia.org/wikipedia/commons/d/da/MO-66.svg
modifier	Alt / Business / Spur	(optional) Use any of these on bannered routes. The bannered route should be in a separate relation from the 'parent' route. For example, highway 37 is one relation while Business 37 is another relation.
is_in:state	MO	(recommended) The route completely resides within the state of Missouri.

Once a way is added to the relation, please delete the corresponding name from the way since this is now redundant information. For example, remove 'name=State Highway xx' and 'tiger:name_*=*' where appropriate.

One exception is to leave "old" route names in place, such as 'name=Old highway xx' since these ways are usually not a part of the route relation.

Unfortunately the route shields are not yet rendered by Mapnik, but don't be discouraged as the OpenStreetMap Americana project considers this high priority.

Data Sources

• Open Data Portal for the Missouri Spatial Data Information Service (available without warranty)
  • Routes and other travelways: https://data-msdis.opendata.arcgis.com/datasets/MSDIS::mo-modot-roads-routes/explore
  • Rest areas, truck parking, and weigh stations: https://data-msdis.opendata.arcgis.com/datasets/MSDIS::mo-modot-rest-areas/explore
  • Highway emergency reference markers: https://data-msdis.opendata.arcgis.com/datasets/MSDIS::mo-modot-emergency-reference-markers/explore
  • Commuter parking lots: https://data-msdis.opendata.arcgis.com/datasets/MSDIS::mo-modot-commuter-lots/explore
  • Department of Conservation trails: https://data-msdis.opendata.arcgis.com/datasets/MSDIS::mo-missouri-department-of-conservation-trails/explore
• Missouri Highway Patrol map: http://traveler.modot.mo.gov/hpmaps/
  • Used by law enforcement to navigate state roads
• Missouri traveler information map: https://traveler.modot.org/map/
  • Used by motorists for real time conditions on state roads
• MoDOT county maps: https://www.modot.org/county-maps
  • An individual county map (for each county) including signed & unsigned routes

Overpass Turbo

You can use Overpass Turbo to query the OpenStreetMap database in complicated ways. This section has some example queries that can be helpful for mapping Missouri state routes. Click the icon next to a code block to execute that query in the browser.

Get all route relations

The following query gets all route relations for Missouri state routes. This is currently not comprehensive.

[out:json][timeout:60];
relation[route=road][network~"^US:MO.*$"];
(._;>;);
out;

Get all numbered route relations

This query gets all non-supplemental route relations. This includes the numbered routes and their special routes (e.g. business loops, spurs, etc.).

[out:json][timeout:90];
area[name="Missouri"]->.mo;
relation(area.mo)[route][network~"^US:MO.*$"]->.all;
relation(area.mo)[route][network~"^US:MO:Supplemental.*$"]->.supp;
((.all;- .supp;);>;);
out meta;

Get all supplemental route relations

This query gets all supplemental route relations. This includes spur routes. This is currently not comprehensive.

[out:json][timeout:90];
area[name="Missouri"];
relation(area)[route][network~"^US:MO:Supplemental.*$"];
(._;>;);
out meta;

Hunt for undiscovered supplemental routes

Progress is ongoing to get every single state route into a route relation including supplemental routes. This query finds all ways with ref=* tags that look like supplemental routes but aren't yet members of any supplemental route relations. Before adding a supplemental route relation you should verify the route with open data sources. The TIGER import made many subtle mistakes along supplemental routes (and also obvious ones like forks), and these mistakes were mostly preserved in the ref tags.

[out:json][timeout:90];

// Look up the area of Missouri for restricting future searches
// This matches all kinds of stuff named Missouri, but only the state contains US:MO routes
area[name="Missouri"] -> .missouri;

// Get all supplemental route relations in Missouri
relation(area.missouri)[route][network~"^US:MO:Supplemental.*$"] -> .known_relations;

// Get all highway ways in those completed supplemental route relations
.known_relations > -> .ways_of_known_relations;
way.ways_of_known_relations[highway] -> .ways_in_relations;

// Get all highway ways in Missouri with ref tags that look supplemental-ish
way(area.missouri)[highway][ref~"^.*MO [A-Z]{1,2}.*$"] -> .ways_maybe_in_relations;

// Subtract in-relation ways from maybe-in-relation ways to get not-in-relation ways
(.ways_maybe_in_relations; - .ways_in_relations;);

// Include nodes in the results
(._; >;);

// Output results
out;

Completion

Colour and symbol legend

The status of the motorways is indicated by a symbol, which describes the type of feature, and a colour, which indicates the completeness of that feature

Meaning of symbols

• - The Motorway is completly mapped.(highway=motorway) - Key: c
• - All Exits are present.(highway=motorway_link) - Key: ex
• - All Motorway Service Utilities are present (Parking with -WC, motorway service area,...). - Key: se
• - All Exit Names and Exit numbers mapped .(highway=motorway_junction, ref=* and name=* on the exit node) - Key: ju
• - All Lane information complete (lanes=*). - Key: ln
• - Speed limitations tagged. (maxspeed=*) - Key: sp
• - Traffic Message Channel information tagged. (TMC=*) - Key: tm
• - The Motorway is linked to a Relation . (Relation type=route) - Key: rl

Meaning of colours

Colour	Meaning	Use for navigation	To do	Value
	The map needs checking, status unknown	Availability unknown	Please check	(none)
	The map contains no or little data	Not to be used	Please complete	0
	The map contains partial data	Limited usability	Please complete	1
	The map is largely complete (please describe missing data)	Use with restrictions	Please complete (missing data, streets etc.)	2
	The map is complete (in the opinion of a mapper)	Suitable for use	Please check and correct any errors	3
	The map is complete (verified by 2 mappers) ; please indicate Date when checked)	Suitable for use	Please update as needed	4
	This attribute is not existing in the mapped area (e.g. no petrol station existing).	Suitable for use	Please update as needed	X

This table is a wiki template with a default description in English. Editable here.

Do not expand "St." or other contractions in city names as these are their official names.

Route	Relation	Status	Relation Formatted Correctly	Notes
1	7453127 7453127		✓	Checked 8/12/2022 by ilikeeditingandcontributing
2	531907 531907			Checked 8/12/2022 by ilikeeditingandcontributing
3	448278 448278			Checked 8/12/2022 by ilikeeditingandcontributing
5	447604 447604			Checked 8/12/2022 by ilikeeditingandcontributing
5 Business (Ava)	11566374 11566374			Checked 6/17/2023 by ilikeeditingandcontributing
5 Business (Camdenton)	7616552 7616552			Checked 6/17/2023 by ilikeeditingandcontributing
5 Business (Milan)	447606 447606			Checked 6/17/2023 by ilikeeditingandcontributing
6	273261 273261			Checked 6/17/2023 by ilikeeditingandcontributing
7	80276 80276			Checked 6/21/2023 by ilikeeditingandcontributing
7 Business (Pleasant Hill)	7580854 7580854
8	87282 87282
9	7367156 7367156
10	1711652 1711652
10 Business (Richmond)	7787389 7787389
10 Spur (Excelsior Springs)	7496066 7496066			MoDOT calls it a spur (travelways 5387/5388), but it's unsigned
11	450379 450379
12	80280 80280
13	97785 97785
13 Business (Bolivar)	7678836 7678836
13 Business (Branson West)	656176364 656176364			Not a state route. Stone County classifies it as a county road literally named "Business 13"
13 Business (Clinton)	7489588 7489588
13 Business (Collins)	7586591 7586591
13 Business (Higginsville)	7926951 7926951
13 Business (Humansville)	11581959 11581959
13 Business (Lexington)	7785848 7785848			Checked 6/17/2023 by ilikeeditingandcontributing Watch out! MoDOT maps have Bus. 13 concurrent with U.S. 24, but signs route it along MO 224. We chose the latter. TyFi (talk)
13 Business (Osceola)	11582008 11582008
13 Business (Richmond)				No Relation
13 Business (Warrensburg)	127267 127267
13 Spur (Battle of Lexington State Historic Site)	7785857 7785857			Checked 6/17/2023 by ilikeeditingandcontributing; Unsigned
14	11597575 11597575
15	450444 450444
15 Spur (Paris)
16	450366 450366
17	450199 450199
18	456624 456624
19	87312 87312
20	127268 127268			Check endpoints
21	445488 445488
21 Business (Hillsboro)
22	450429 450429
23	184112 184112
25	446864 446864
25 Business (Malden)	446865 446865
27
28	450350 450350
30	136051 136051
31
32	77875 77875
32 Business (Park Hills)
33	102843 102843
34	446090 446090
34 Spur (Jackson)
37	62134 62134
37 Business (Butterfield)
37 Business (Cassville)	76459 76459
37 Business (Purdy)
37 Business (Seligman)
38	448276 448276
39	76454 76454
39 Business (Mount Vernon)
41	127276 127276
41 Spur (Arrow Rock)
41 Spur (Miami)
42	450322 450322
43	70401 70401
45	104066 104066
46	271882 271882
47	531851 531851
48	104069 104069
49	87305 87305
51	446101 446101
52	456622 456622
52 Business (Deepwater)
53	446106 446106
58	270633 270633
58 Spur (Centerview)
59	69950 69950			Incomplete through McDonald Co.
64
64A
64B
66	69454 69454
68	87281 87281			Check south end
72	87302 87302
73
74	447596 447596
75	446853 446853
76	76814 76814
77	446850 446850			Check south end
78	80278 80278
79	450879 450879
80	446843 446843			Check east end
81	450368 450368
82	184215 184215
83
84	446857 446857
84 Spur (Caruthersville)
85	271887 271887			Check south end
86	77098 77098
87	128560 128560			Check and fix endpoints
89	530310 530310
89 Spur (US Route 50)	530311 530311
90	75980 75980
91	446841 446841			Check east/south end
92
92 Spur (Tracy)
94	531896 531896
95	448269 448269
96	63200 63200
97	75968 75968
98	128524 128524
99	446109 446109			Un-straighten US 160
100	530383 530383
101	446120 446120
102	446852 446852			Check south end
103	446108 446108			Check south end
104	445490 445490
105	446851 446851
106
106 Spur (Deer Run State Forest)
107	450405 450405
108	446860 446860
109	530727 530727
110
111	271890 271890
111 Spur (Craig)	271891 271891			Verify this
112	77479 77479
112 Spur (Roaming River State Park)
113	271885 271885
114	446854 446854
115	530788 530788
116	184150 184150
117	446075 446075
118	271884 271884
119	450353 450353			Check south end
120	271886 271886
121
122	127278 127278			Check west endpoint
123	77868 77868
124
124 Business (Centralia)
125	448274 448274
126	77483 77483
127	184127 184127
128	273238 273238			Check north end
129	450402 450402
130	273279 273279
131	270649 270649
133	450293 450293
134	450345 450345			Check south end
135
137	77861 77861
138	104065 104065			Check west end
139	273277 273277
141	181749 181749			Exits complete and Relation verified 11/04/2015 per Brett Lord-Castillo
142	446130 446130
143	446071 446071
144
145	273239 273239
146	273237 273237
147	531897 531897			Check north end
148	271308 271308
149	450389 450389
150	77770 77770
151	450442 450442			Check north end
152	118951 118951
153	446855 446855
154	450412 450412
156	450390 450390
157	450404 450404
158	446107 446107
161	450841 450841
162	446856 446856			Check east end
163
164	446858 446858			Check east end
165
168	450447 450447
171	63206 63206
172	446072 446072			Check east end
173	77516 77516
174	69449 69449
175	77748 77748
176
177	447600 447600			Check south end
179
180	530740 530740
180 Spur (Pagedale)	530741 530741
181	448273 448273
185	445482 445482			Realigned in Sullivan?
185 Spur (Meramec State Park)	445483 445483			Check east end
187	128599 128599			Check west endpoint
190	273236 273236
202	450357 450357
210
213	127266 127266
215	77784 77784
215 Spur (Brighton)
221
224	1711533 1711533			Checked 6/18/2023 by ilikeeditingandcontributing
231	137336 137336
240
240 Alternate (US Route 40)
240 Business (Glasgow)
240 Spur (Rocheport)
242
245	77773 77773
246	271315 271315
248	77480 77480			Verify route through Reeds Spring
249	69697 69697			TIGER data incomplete due to construction
254
265	77502 77502
266	69451 69451
267	136078 136078
269	77886 77886
273	104067 104067			Check south end
273 Spur (Tracy)
291	118921 118921			North endpoint is broken
340	530726 530726
350
360
364	531743 531743			Extension under construction
366	181740 181740
367	530810 530810
370
371	274091 274091			Check south end
376	77520 77520
413
465
571	70435 70435
740	1711537 1711537
744	80144 80144
752	273637 273637
759	274042 274042			Check both ends
763	1711538 1711538
765	181553 181553
799	14459993 14459993			Unsigned

Supplemental Routes (table not complete, add as needed; route letter then county sort order):

Do not expand "St." or other contractions in county names as these are their official names.

Sources for these routes include these county maps and the MoDOT Traveler Information Map.

Every supplemental route in Jefferson County, St. Louis County, St. Louis City County, and St. Charles County as of now (6/20/2023) have been put into this table. Each route was taken from the county maps link above, comprehensively checking each inch of said maps.

Route	Relation	Status	Relation Formatted Correctly	Notes
A (Jefferson County)
A (St. Charles County)
AA (Jefferson County)
AB (St. Louis County)	11611076 11611076		✓	Checked 6/19/2023 by ilikeeditingandcontributing
AC (St. Louis County)		Please check
B (Jefferson County)
B (St. Charles County)
B (St. Louis County)	15994942 15994942			Checked 6/19/2023 by ilikeeditingandcontributing; this route can only be seen on this MODOT county pdf map, not the Traveler Info Map. (Unsigned)
BA (St. Louis County)	15985227 15985227			Checked 6/19/2023 by ilikeeditingandcontributing
BB (Jefferson County)
C (Jefferson County)
C (St. Charles County)				After the road meets the river, the road turning left (after the straightforward section to the river) is called "Old Highway C" on the county map for St. Charles.
CC (Jefferson County)	16050828 16050828
CC (St. Louis County)	15985245 15985245		✓	Conflicting sources on path, MoDOT Traveler Information Map and this MODOT county pdf map. PDF says revised in 2011, so it was probably realigned in the last decade. Bing StreetSide from 2020 shows two route markers at [1] and [2] along the route as currently mapped. TyFi (talk) 23:25, 2 July 2023 (UTC)
D (St. Charles County)
D (St. Louis City County/St. Louis County)	8671769 8671769			East end was fixed, but it may be unsigned. It is shown on the traveler information map (MoDOT).
DD (Jefferson County/Ste. Genevieve County)
DD (St. Charles County)
E (Jefferson County/St. Francois County)
EE (Jefferson County)
EE (St. Louis County)	8671762 8671762			Checked 6/19/2023 by ilikeeditingandcontributing
F (Franklin County/Jefferson County)		Please check
F (St. Charles County)
FF (Jefferson County)
H (Jefferson County/Washington County)
H (St. Charles County)
H (St. Louis City County)	8671768 8671768			Checked 6/20/2023 by ilikeeditingandcontributing This road ends at an administrative boundary (St. Louis City County - St. Louis County) unlike other supplemental routes.
HH (Franklin County/Jefferson County)				Only a very small sliver enters Jefferson County in the middle of the route, and then it re-enters Franklin County.
HH (St. Louis County)		Please check
J (St. Charles County)
JJ (Jefferson County/St. Francois County)
JJ (St. Louis County)	8671763 8671763			Conflicting sources on path, MoDOT Traveler Information Map and this MODOT county pdf map.
K (St. Charles County)
M (Jefferson County)	15969991 15969991			Should this be tagged as expressway=yes?
MM (Jefferson County)
N (St. Charles County)
N (St. Louis County)		Please check
NN (Franklin County/Jefferson County)
P (Jefferson County)
P (St. Charles County)
PP (Jefferson County)
T (Franklin County/St. Louis County)		Please check
T (Jefferson County)
T (St. Charles County/Warren County)	16005437 16005437			Checked 6/21/2023 by ilikeeditingandcontributing
TT (Jefferson County)
U (St. Louis County)		Please check
V (Jefferson County)
V (St. Charles County)
W (Jefferson County)	16008907 16008907			Despite its symbol being on the St. Louis County map, it is only in Jefferson County. The "END" sign is south of the border between them. Relation added and topology is good but ways could be a little smoother. TyFi (talk) 22:10, 22 June 2023 (UTC)
W (St. Charles County)
WW (Jefferson County/Washington County)				Only a very small sliver enters Washington County in the middle of the route, and then it re-enters Jefferson County.
Y (Jefferson County)
Y (St. Charles County)
Z (Jefferson County)
Z (St. Charles County)