Indiana State Road 8
|Maintained by INDOT|
|Length||77.476 mi (124.686 km)|
|Length||42.845 mi (68.952 km)|
|West end||US 231 / SR 2 in Hebron|
| US 421 in LaCrosse|
US 35 in Knox
|East end||SR 17 near Plymouth|
|Length||34.631 mi (55.733 km)|
|West end||SR 9 in Albion|
| SR 3 in Avilla|
I-69 in Auburn
|East end||SR 18 near Hicksville, OH|
|Counties||Lake, Porter, LaPorte, Starke, Marshall, Noble, DeKalb|
No part of SR 8 in Indiana is included as a part of the National Highway System (NHS). The NHS is a network of highways that are identified as being most important for the economy, mobility and defense of the nation.
The western terminus of the western segment is at U.S. Route 231(US 231) and SR 2 in Hebron. The highway goes due east leaving Hebron and heading toward Knox. It passes through rural farmland, having a four-way stop at SR 49 in Kouts. The route enters La Crosse having a four-way stop at US 421. North of Knox it begins a concurrency with US 35; this ends in downtown Knox with SR 8 heading due east. The road leaves Knox passing through the east side of town. The eastern terminus of the western segment is at SR 17.
The western terminus of the eastern segment begins at SR 9. The road heads east from Albion toward SR 3. On the way to SR 3 the highway passes through rural farmland. The road begins a concurrency with SR 3 at a traffics light north of Avilla; this ends at an intersection with SR 3 on the east side of Avilla. The road then goes due east towards Auburn. It has a four-way stop at SR 327 north of Garrett. The route enters Auburn on the west side of town and has an interchange with Interstate 69(I-69). The road now passes through commercial areas before entering downtown Auburn where it has an intersection with Old SR 427. The roadway now leaves Auburn, returning to rural farmland. The highway has a short concurrency with SR 1. The route turns southeast towards Hicksville, OH. SR 8 ends at the Ohio state line; this is the western terminus of Ohio State Route 18.
In the early 1940s, the road's western terminus was at the Illinois state line, becoming Exchange Street. It was truncated eastward to US 41 in St. John in the 1970s. From St. John to Hebron, it was concurrent to US 231. SR 8 was later truncated to its junction with US 231 in Hebron, eliminating the concurrency.
|Porter||Hebron||0.000||0.000||US 231 (Main Street) / SR 2||Western end of SR 8|
|Kouts||9.059||14.579||SR 49 (Main Street)|
|LaPorte||LaCrosse||16.053||25.835||US 421 (Washington Street)|
|Starke||Jackson Township||24.060||38.721||SR 39 – North Judson, La Porte||Kankakee Fish and Wildlife Area|
|Center Township||30.131||48.491||US 35 north – Michigan City||northern end of US 35 concurrency|
|Knox||32.134||51.715||US 35 south (Heaton Street) – Winamac||Southern end of US 35 concurrency|
|Washington Township||37.144||59.777||SR 23 – Ober|
|Marshall||West Township||42.845||68.952||SR 17||Eastern end of the western segment of SR 8|
|Gap in route|
|Noble||Albion||42.921||69.075||SR 9 (Orange Street)||Western end of the eastern segment of SR 8|
|Allen Township||52.112||83.866||SR 3 north – Kendallville||Western end of SR 3 concurrency|
|Avilla||54.833||88.245||SR 3 south – Fort Wayne||Eastern end of SR 3 concurrency|
|DeKalb||Garrett||59.264||95.376||SR 327 – Garrett, Corunna|
|I-69 – Fort Wayne, Lansing||Interchange|
|Concord Township||72.436||116.574||SR 1 south – St. Joe||Western end of SR 1 concurrency|
|73.379||118.092||SR 1 north / SR 101 south – Butler, Woodburn||Eastern end of SR 1 concurrency; northern terminus of SR 101|
|Newville Township||77.552||124.808||SR 18 – Hicksville||Ohio state line|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
- "Work Starts on County Roads". The Daily Reporter. Greenfield. April 15, 1932. p. 5. Retrieved December 21, 2016 – via Newspapers.com.
- Indiana Department of Transportation (July 2016). Reference Post Book (PDF). Indianapolis: Indiana Department of Transportation. Retrieved April 10, 2017.
- National Highway System: Indiana (PDF) (Map). Federal Highway Administration. December 2003. Retrieved April 24, 2012.
- "National Highway System". Federal Highway Administration. August 26, 2010. Retrieved April 24, 2012.
- Google (April 24, 2012). "overview map of SR 8 from Hebron to SR 17" (Map). Google Maps. Google. Retrieved April 24, 2012.
- Indiana Transportation Map (PDF) (Map). Indiana Department of Transportation. 2011–2012. § C4-C6 & B9-C12. Retrieved April 24, 2012.
- Google (April 24, 2012). "overview map of SR 8 from Albion to Ohio" (Map). Google Maps. Google. Retrieved April 24, 2012.