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St. Clair County (IL) Highways

Note: The county highway numbering system changed in 1996 when the county phrased out letter-appended routes. However, most of the signs on the roads have the old numbers on them -- and that may remain that way for the unseen future. Some new numbers are not known at the time, and the county has refused to provide me an official route list.

The new number is the left column, the road name(s) and in the next column, followed by old number(s), and the notes regarding to the road. The old system had a lot hidden multiplexing with county and state-maintained roads, the new system pretty much eliminates that. Some county highways are merely subdivision streets. If you got any info about these routes, email me.

new number

road(s)

old number

notes

?

Lebanon Cut off

R31

new route number unknown, possible Alt US 50?

?

Lichenbrock Sch. Rd, Beckman Rd

R41

new route number unknown

?

Venedy Road

J23

new route number unknown, To Washington Cty Highway 6

?

Funk School Road

R27

new route number unknown

?

County Line Road

R46

new route number unknown, second longest county highway

?

Waterloo Road

J26

new route number unknown, continuation of Monroe Cty 2

?

unknown

P44

new route number unknown -- I don't know at all about this route

?

Baer Road, Schaller Road

J37

new route number unknown

?

Lenzburg North Road

R32

new route number unknown

?

Lenzburg East Road

J35

new route number unknown

?

Marissa North Road

R39

new route number unknown

?

Saxtown Rd, Bohleysville Rd

P57

new route number unknown

?

O'Fallon Drive

H55

new route number unknown

?

Emerald Mount Road

H53

new route number unknown

?

Perrin Road

H64

new route number unknown

?

Long Acre Dr, Ashland Ave

H59

new route number unknown; in Fairview Heights

1

Reinneck Road

R25

R25 had hidden multiplexing

10

19th Street

unknown

Runs in ESL, Cahokia, and Sauget

16

Hartman Lane

R17

R17 was a broken route w/hidden multiplexing. It once was on Klien Sch. Rd

17

State St, Dupo-Carondelet Road

P42

State St. in E. Carondelet

18

Eiler Road

H66

old number had brief multiplex with IL 163

20

Jefferson Road

J15

21

unknown

J25

Part of longer J25 in old system

22

Concordia Church Road

J10

27

Ballwin Road

R28

33

Black Lane

P64

34

Bunkum Road

H56

35

79th Street

P62

crosses I-64 between I-255 and IL 157

38

7th Street

H65

Broken Route: hidden multiplexion

39

Triple Lakes Rd, Bohleysville Rd

P53

4

Old Freeburg Road

R19

40

Imbs Station Road

H66

43

O'Fallon-Troy Road, Perrin Road

H54

H54, H62, and part of R21 combined for creation of this route

44

Shiloh Road

R22

Part of longer R22 in old system

46

S. 59th Street Road

P66

S. 59th Street in Belleville

47

Douglas-Mildstadt-Freeburg Road

J19

"JB BRIDGE" Road

48

Five Forks Road

J25

Part of longer J25 in older system

50

Summerfield Road, Highbanks Rd

R40

longest county highway; multiplexes w/IL 161 for 2 miles

57

unknown

J34

To Washington Cty Highway 10, Oakdale Road

58

Forest Bvld.

unknown

In Caseyville

6

Davis St, Ferry Road

P41

61

Scott Field/Troy Road

R25

Northern part of R25; R25 had a lot of hidden multiplexing in old system

65

Jacks Run Road, Jefferson Road

J17

70

Old Belleville/Collinsville Rd. Rd.

unknown

8

New Athens/Darmstadt Road

J32

80

unknown

unknown

Runs south side of Frank Holten St. Park

81

Sullivan Dr.

R10

82

Johnson Road

R22

other part of longer R22

89

Greenmount Road, Little Oaks Rd.

R18

Rebuilt in 1996 and 1997

9

Floraville Road

P60

95

Drake Lane

unknown

In Fairview Heights city limits