The Sourthern Tier Expressway (I-86/NY 17) has a short spur in Bemus Point connecting from exit 10 to NY 430. It appears to be a remnanent of a longer spur that might have been planned to serve Mayville and Westfield. Some speculate that it may have been planned to be part of a former routing of the Southern Tier Expressway, and the reference route (954J) carries reference markers marked 17.
| Mile | Eastbound | Westbound | Notes |
|---|---|---|---|
| Chautauqua County | |||
| Speed Limit 55 | |||
| 0.0 | To  To  Jamestown Erie, PA |
 WestLong Point State Park Midway State Park |
|
| 0.0 | East Bemus Point Ellery Center |
 |
|
| 1.2 | West Erie, PA |
||
| 1.2 | East Jamestown |
To |
|
| Speed Limit 55 | |||
| Chautauqua County | |||