^Northbound on the Dan Ryan Expressway on Chicago's South Side, April 2018.
Interstate 90 in Illinois enters the state at the center of the northern border with Wisconsin, dropping south to Rockford, heading southeast through Chicago, and rounding the southern edge of Lake Michigan into Indiana. Interstate 90 comes from south-central Wisconsin, entering Illinois along with Interstate 39 at Beloit, then splitting southeasterly from Interstate 39 toward Chicago. Near O'Hare Airport, Interstate 90 turns from a tollway into the Kennedy Expressway, having no tolls, into downtown Chicago. Interstate 90 leaves downtown Chicago going south on the Dan Ryan Expressway, transferring to the tolled Chicago Skyway before crossing into Indiana.
Exits on Interstate 90 are listed in increasing order from west to east, as is customary for even-numbered Interstate highways.
Interstate 90 enters Illinois from Wisconsin at Beloit, and it's concurrent with Interstate 39's entry into the state...
Exits on Interstate 90 are listed in increasing order from west to east, as is customary for even-numbered Interstate highways.
Interstate 90 enters Illinois from Wisconsin at Beloit, and it's concurrent with Interstate 39's entry into the state...
Exit 1 is just barely within the state of Illinois, and it connects to Illinois 75 and South Beloit, Illinois; US Route 51 comes from Illinois 75's western leg and joins the two Interstates southbound:
Exit 3 is for Rockton Road, which does indeed lead to Rockton:
Exit 8 is a half-folded diamond interchange to Illinois 173, signed as a way to Machesney Park:
Exit 12 is for Riverside Boulevard in Rockford:
Exit 15 is a trumpet spur to Business US Route 20, known as State Street here in Rockford:
Exit 17 is the interchange where Interstate 39 and US Route 51 split away to continue south toward Bloomington, as Interstate 90 turns easterly:
Exit 20 is a half-folded diamond interchange to Irene Road, where Rockford meets Belvidere:
Exit 25 is a recently-reconfigured fountain interchange to Belvidere-Genoa Road, linking to both towns that appear in the name:
Exit 32 is a new fountain interchange to Illinois 23, which provides access to Marengo and Genoa...
Exit 42 is a trumpet spur to US Route 20, crossing at a different northwest-southeast angle, and US Route 20 reaches Hampshire and Marengo in this vicinity:
Exit 47 is for Illinois 47, which provides access to Elburn, Huntley and Woodstock:
Exit 52 is for Randall Road:
Exit 54A is the first ramp of the Illinois 31 cloverleaf in Elgin, leading to Illinois 31 south:
Exit 54B is the second ramp at the cloverleaf, reaching Illinois 31 north on the west side of the Fox River:
Exit 56 is a trumpet spur to Illinois 25 in Elgin, on the east bank of the Fox River:
Exit 58 is to Beverly Road, with access restricted toward/from the east leg of Interstate 90:
Exit 59 is a partial cloverleaf interchange to Illinois 59, in the vicinity of South Barrington and Hoffman Estates:
Exit 62 is a single-point interchange to Barrington Road:
Exit 65 leads to Roselle Road, as Interstate 90 enters the Schaumburg area:
Exit 67 is a sort of partial bonus interchange to Meacham Road, to/from the westbound lanes of Interstate 90 only:
Exit 68A is the first half of a cloverleaf to Interstate 290 and Illinois 53; this first ramp leads to the southbound beginning of Interstate 290 toward Chicago, with southbound Illinois 53 along for the ride toward the "West Suburbs"...
Exit 68B is the second ramp of the cloverleaf, leading to Illinois 53's northward freeway extension toward "Northwest Suburbs"...
Exit 70 is a partial cloverleaf interchange to Arlington Heights Road...
Exit 73 is a diverging diamond interchange (one of the first 3 constructed in Illinois), to Elmhurst Road, which becomes Illinois 83 just to the north...
Exit 76 is to Lee Street, a north-south shortcut taken by Illinois 72, with access only provided to/from the east on Interstate 90...
Exit 77A (eastbound) leads to Interstate 294 south toward Indiana, and to Interstate 190 west into O'Hare's main entrance (these exits are provided farther east for access from Interstate 90 westbound)...
Exit 77B leads to Interstate 294 north toward Wisconsin (this ramp is the only one labeled "77" for westbound)...
Exit 79A is to Illinois 171 southbound along Cumberland Avenue; Interstate 90 is now a freeway called the "Kennedy Expressway"...
Exit 79B is to Illinois 171 northbound on Cumberland Avenue toward its northern end, which is a block away...
Exit 79C, only accessible from westbound on Interstate 90, is to Interstate 190 westbound into O'Hare and Interstate 294 south toward Indiana (this is along the newly-completed "Cumberland Feeder")...
Exit 80 is to Canfield Avenue, with access only provided to/from the east...
Exit 81A is for Illinois 43, which carries Harlem Avenue...
Exit 81B is for Sayre Avenue, with access only provided to/from the east...
Exit 82B leads to Nagle Avenue and Bryn Mawr Avenue; only one of these streets is shown on the sign, depending on which direction you're approaching from...
Exit 82C is an extra eastbound offramp to Austin Avenue...
Exit 83A is for Foster Avenue, but the eastbound offramp is missing (use exit 82C in that case)...
Exit 83B is a westbound offramp to Central Avenue...
Exit 84 is a full diamond interchange for Lawrence Avenue...
Around mile 85, Interstate 94 joins from the north, leading to the section of the Kennedy Expressway carrying both Interstates 90 and 94 into downtown Chicago. Interstate 94's exit numbers take precedence until the two Interstates split at the inception of the Chicago Skyway on the south side of town.
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Around mile 100, on the south side of Chicago about 7 miles south of downtown, Interstate 90 splits from Interstate 94 by transferring onto the Chicago Skyway, a high-speed, tolled viaduct over the city below. Though Interstate 94 continues south on the Dan Ryan Expressway toward Interstate 57 as a freeway, Interstate 90 jumps onto the tolled Chicago Skyway toward the Indiana Toll Road...
Exit 100 leads to State Street, and, like almost every other exit on the Skyway, only provides access to/from the east, meaning that traffic heading outbound from inner Chicago can't get off the Skyway once they get on! Keep this in mind when making your travel plans...
Exit 101 is for Saint Lawrence Avenue, with access only provided to/from the east on Interstate 90...
Exit 102 is for 73rd Street, with access only provided to/from the east on Interstate 90...
Exit 103 is for Stony Island Avenue, with access only provided to/from the east on Interstate 90...
Exit 104 is for 87th Street, with access only provided to/from the east on Interstate 90...
Exit 105 is for Anthony Avenue and 92nd Street, with access only provided to/from the WEST, meaning this is the first exit ramp eastbound since the start of the Chicago Skyway; and the highway has almost reached Indiana by this point...
Exit 107 is an interchange formed by a hodge-podge of scattered ramps, but it does provide full access to US Routes 12, 20, and 41, marked by Indianapolis Blvd....
