List of highway route numbers in Oregon Mainline routes Mainline routes

| Number_ | South_west_end | North_east_end | Formed | Eliminated_ |
|---|---|---|---|---|
| Oregon Route 236 | OR 62 in Eagle Point | US 97 in Klamath Falls | 1935 | 1940s |
| Oregon Route 237 | I-84/US 30 at North Powder | OR 82 in Island City | 1935 |  |
| Oregon Route 238 | US 199/OR 99 south of Grants Pass | OR 99 in Medford | 1935 |  |
| Oregon Route 240 | OR 47 in Yamhill | OR 99W in Newberg | 1935 |  |
| Oregon Route 241 | US 101 in Coos Bay | East of Nesika County Park | 2003 |  |
| Oregon Route 242 | OR 126 south of Belknap Springs | US 20/OR 126 in Sisters |  |  |
| Oregon Route 244 | US 395 west of Ukiah | I-84/US 30 at Hilgard |  |  |
| Oregon Route 245 | US 26 near Unity | OR 7 near Salisbury |  |  |