Illinois - NO DESIGNATED CROSS STATE ROUTES 
IIllinois has an extensive network of state and county roads and their cycling
suitability map has categorized them by most suitable, caution advised, and
not recommended.  The combination of these roads would allow the development   
of routes connecting most destinations, including connections with routes from
other states.  The Hennepin Canal Parkway State Trail crosses half the state 
from Moline to Hennepin and can be connected with the I&M Canal trail to cross 
most of the state (west-east).
IL is developing a state-wide bike route plan based on county and municiple routes
Grand Illinois Trail (includes Hennepin Canal Parkway and I&M Canal trail)
US-40 National Road in Illinois, one of America's Byways
Developing a Chicago-St. Louis route following I-55
Adventure Cycling TransAm and Lewis & Clark Trail routes (not on map)
MRT follows western IL border, north-south
Indiana - NO DESIGNATED CROSS STATE ROUTES 
US-40 National Road in Indiana, one of America's Byways
Ohio River Scenic Byway, one of America's Byways
The Bloomington Bicycle Club sponsors the RAIN ride
    (follows US 40 - The National Road).
Possible routes along Interstate corridors using state and federal roads:
 - US-52 along I-65 NW of Indianapolis
 - US-31 along I-65 south of Indianapolis
 - US-136 along I-74 west of Indianapolis
 - IN-46 along I-74 east of Indianapolis
 - IN-120 along I-80 east of South Bend
Richmond-Marion on the Cardinal Trail - connect to Adventure Cycling Norther Tier
Adventure Cycling Northern Tier and North Lakes routes (not on map)
Iowa - NO DESIGNATED CROSS STATE ROUTES 
Iowa has an extensive network of state and county roads and their cycling
suitability map has categorized them by traffic density and shoulder
width.  The combination of these roads would allow the development of routes 
connecting virtually any two destinations, including connections with routes from
other states.  RAIGRAI has run 33 different east west routes, plus there are Rivers
routes on the Mississippi and Missouri 
Adventure Cycling Lewis & Clark Trail route (not on map)
Kansas designated cross-state routes
US-36 western to eastern border
US-83 northern to southern border
KS-96, 167, 4, 195, 31, 33 western to eastern border
US-73, 59 northern to southern border
US-56, 160, 166, KS-51 western to eastern border
KS-28, 128, 181, 232, 14 northern to southern border
Adventure Cycling TransAm and Lewis & Clark Trail routes (not on map)
ADT -American Discovery Trail
Kentucky
Named route (all routes on state and federal highways)
Rambin' River Tour
Kentucky's TransAmerica Trail (overlaps other KY routes - not on map)
Midland Kentucky Tour
Southern Lakes Tour
Central Heartlands Tour
Mammoth Cave Tour
Bluegrass Tour
Mississippi River Trail (overlaps Ramblin' River route)
Adventure Cycling TransAm and Great Rivers South routes (not on map)
Louisiana
LA-2 east to west
LA-15, 8, 6, US-84 east to west
LA60, 1072, 440, 441, 38, 432, 421, 10, 420, 1, 1181, 107, 361, 361, 359, 103, 104, 26, US-190 east to west
US-90, LA-18, 405, 75, 70, 182, 14, 82 east to west
LA-1, 169, 789, 5, 191, 392, 111, 389, 27, 385, 384 north to south
US-65, LA-134, 577, 17, 4, 562, 15, 1, 78, 77, 75 north to south
U-51 north to south
Adventure Cycling Southern Tier and Great Rivers South routes (not on map)