Meeting exhibits from the recent meeting for I-55 through Springfield are up. Highlights from the
alternatives exhibits:* I-72 is widened to six lanes from IL 4 to I-55
* I-55/I-72 is widened to six lanes from the 6th Street interchange to south of the IL 29 interchange
* From south of the IL 29 interchange to north of the I-72/Clear Lake Avenue interchange I-55 is widened to six lanes plus C-D lanes (which do not appear on some of the interchange alternatives)
* From north of the I-72/Clear Lake Avenue interchange to the BL 55 interchange at Sherman, I-55 is widened to six lanes
* The interchange alternatives have unusual names. Instead of the usual Alt 1/Alt 2 or Alt A/Alt B, the Sixth Street interchange has the "Cyclone" and "Rocket" alternatives
Interchange AlternativesSixth Street* In both options, NB I-55 to BL 55/Sixth Street becomes a right side exit
* In the Cyclone Alternative, the NB I-55 to WB I-72 loop is replaced with a flyover. EB I-72 gets a C-D roadway
* In the Rocket Alternative, NB I-55 to WB I-72 and EB I-72 to NB BL 55/6th Street become semi-direct/turbine ramps
Stevenson Drive* Hawkeye Alternative - SB ramps become a standard diamond. NB becomes a larger folded diamond
* Hoosier Alternative - the existing interchange is replaced with a new diamond interchange with an extended Dirkson Parkway
* Husker Alternative - the existing interchange is replaced with a SPUI
IL 29* Wildcat Alternative - the current cloverleaf becomes a six-ramp partial cloverleaf with exit loops from I-55
* Wolverine Alternative - the current cloverleaf becomes a SPUI
I-72/Clear Lake Avenue* Boilmaker Alternative - all loops except for the NB to WB loop are replaced with semi-direct/turbine ramps. EB I-72 supposedly gets a C-D roadway to east of the Old US 36 interchange
* Bruin Alternative - WB I-72 is put onto a left side flyover, but the current WB to SB loop also remains. I-55 gets C-D roads
IL 54* Gopher Alternative - the current cloverleaf is replaced with a diamond
* Panther Alternative - the current cloverleaf is replaced with a SPUI
* Saluki Alternative - the current cloverleaf is replaced with a six-ramp partial cloverleaf with exit loops from I-55