Interstate 475 (Ohio)
|Rosa Parks Highway|
|Auxiliary route of I-75|
|Maintained by ODOT|
|Length:||20.37 mi (32.78 km)|
|South end:||I-75 / US 23 in Perrysburg|
|East end:||I-75 in Toledo|
Interstate 475 (I-475) is an Interstate Highway in Ohio that is a 20.37-mile (32.78 km) western bypass of Toledo. The southern terminus is I-75 exit 192 near Perrysburg. From the southern terminus to exit 14, I-475 is co-signed with US Route 23 (US 23), and is signed the north/south section of I-475. From exit 14 to the eastern (northernmost) terminus at I-75 exit 204 in central Toledo, (north of downtown), it is signed the east/west section of I-475.
Interstate 475 is a half-beltway bypassing downtown Toledo on its western side as mostly a north-south segment and a largely east-west segment on the north side of Toledo. It has almost a half-square shape on the map consisting of the top and left sides of the square. It is much less direct than its parent I-75 through Toledo; the entire route of I-475 uses 20 miles to connect exits 12 miles apart on Interstate 75.
I-475 parallels what was US 23 on its north-south segment (US 23 has been realigned to it); it has Ann Arbor, Michigan as a control city northbound (via US 23) and Columbus, Ohio and Dayton, Ohio as control cities southbound; it reaches neither of the three cities. On its northern segment it parallels Ohio State Route 120 and has Toledo as a control city to the east. Rural when built, it has much suburban-style development along its route.
I–475 was opened in sections with the first opened in 1967 between US 20, at the current I–75 interchange near Perrysburg, and US 24, near Maumee. By 1969 the second portion opened between US 24 and US 23, near Sylvania. In this year the southern terminus was moved from US 20, near Perrysburg, to the southern interchange with I–75. The final section opened in 1971 and was between US 23 and I–75 near downtown Toledo.
Between 2010 and 2012, the easternmost sections of I-475 were reconstructed. This included the redevelopment of several overpasses, as well as the removal of an outdated interchange with Central Avenue in favor of an interchange with a newly constructed extension of ProMedica Parkway for easier access. Additional lanes were also added at the I-75/I-475 junction at I-475's eastern terminus.
A single-point urban interchange was constructed in Sylvania Township at the US 20/State Route 120 exit from July 2015 into November 2016.  Beginning in October 2016, and ongoing as of November 2017, work began in Perrysburg on upgrading the interchange with State Route 25 into a diverging diamond interchange.
This section contains a table that is missing mileposts for one or more junctions.
|Wood||Perrysburg||0.00||0.00||1||I-75 / US 23 south – Toledo, Dayton||Southbound exit and northbound entrance; southern end of US 23 concurrency; southern terminus signed as exits 1A (north to I-75) and 1B (south to I-75); I-75 exit 192|
|0.82||1.32||2||SR 25 (Dixie Highway) – Perrysburg, Bowling Green||Diverging diamond interchange|
|Lucas||Maumee||4.18||6.73||4||US 24 (Anthony Wayne Trail) – Napoleon, Waterville, Maumee||Signed as exits 4A (east) and 4B (west) on collector–distributor lanes; exit 68 on US 24|
|6.15||9.90||6||To I-80 / I-90 / Ohio Turnpike / Salisbury Road / Dussel Drive||Salisbury Road runs west, Dussel Drive runs east; added 1989|
|Springfield Township||8.32||13.39||8||SR 2 (Airport Highway) – Toledo Express Airport, Swanton, Toledo||Signed as exits 8A (east) and 8B (west) southbound|
|Sylvania Township||12.65||20.36||13||US 20 (Central Avenue) / SR 120||Single-point urban interchange|
|13.51||21.74||14||US 23 north – Sylvania, Ann Arbor||Northern end of US 23 concurrency; route orientation changes from north–south to east–west|
|14.96||24.08||15||Corey Road||Eastbound exit and westbound entrance|
|Toledo||16.08||25.88||16||Talmadge Road||Westbound exit and eastbound entrance|
|17.64||28.39||18A||SR 51 north (Monroe Street)||Westbound exit to northbound SR 51 and eastbound entrance from southbound SR 51 only|
|18.19||29.27||18B||Douglas Road||Westbound exit and eastbound entrance|
|19||Central Avenue, Jackman Road||Jackman Road was signed westbound only; entrances were via Upton Avenue; exit removed 2012|
|19.20||30.90||19||ProMedica Parkway||ProMedica Parkway replaced the Central Avenue exit in 2012|
|19.93||32.07||20||I-75 – Detroit, Dayton||Eastbound exit and westbound entrance; northern terminus & signed as exits 20A (north) & 20B (south); I-75 exit 204|
|20.35||32.75||205A||Jeep Parkway, Willys Parkway||Former eastbound exit and westbound entrance; exit number corresponded to I-75|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi
- DeSimone, Tony (October 31, 2002). "Table 2: Auxiliary Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways". Route Log and Finder List. Federal Highway Administration. Retrieved September 27, 2007.
- Curnette, Mark (September 25, 1998). "Rosa Parks, Freedom Center Award Winner, Keeps Spirit of Movement Alive". The Cincinnati Enquirer. Retrieved August 24, 2010.
- Ohio Department of Highways (1966). Official Highway Map (MrSID) (Map). c. 1:563,200. Columbus: Ohio Department of Highways. OCLC 5673562. Retrieved February 1, 2013.
- Ohio Department of Highways (1967). Official Highway Map (MrSID) (Map). c. 1:563,200. Columbus: Ohio Department of Highways. OCLC 5673562, 7444249. Retrieved February 1, 2013.
- Ohio Department of Highways (1969). Official Highway Map (MrSID) (Map). c. 1:563,200. Columbus: Ohio Department of Highways. OCLC 5673562, 7448779. Retrieved February 1, 2013.
- Ohio Department of Highways (1971). Official Highway Map (MrSID) (Map). 1:554,400. Columbus: Ohio Department of Highways. OCLC 5673562. Retrieved February 1, 2013.
- Ohio Department of Transportation (July 27, 2010). "I-75/I-475 Interchange Upgrade Project" (PDF). Ohio Department of Transportation. Retrieved September 11, 2014.
- "Central Avenue/I-475 Interchange Upgrade Project Home". Ohio Department of Transportation. Retrieved November 27, 2017.
- "Diverging Diamond in Perrysburg". Ohio Department of Transportation. Retrieved November 27, 2017.
- McLaughlin, Mary-Beth (June 8, 2003). "Maumee Turned Risk Into Riches at Arrowhead Park". The Blade. Toledo, OH. Retrieved June 16, 2008.
Route map: Google
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