List of highway route numbers in Oregon Mainline routes Mainline routes

| Number_ | South_west_end | North_east_end | Formed | Eliminated_ |
|---|---|---|---|---|
| Oregon Route 173 | US 26 east of Government Camp | Timberline Lodge | 2002 |  |
| Oregon Route 180 | US 20 at Eddyville | US 20 at Blodgett | 2002 |  |
| Oregon Route 182 | Devils Punch Bowl State Natural Area | US 101 north of Newport | 2002 |  |
| Oregon Route 194 | OR 223 south of Dallas | OR 51/OR 99W in Monmouth | 2002 |  |
| Oregon Route 200 | North of Curtin | OR 99W in Monroe | 2002 |  |
| Oregon Route 201 | SH-19 towards Homedale, ID | I-84/US 30 south of Huntington | 1935 |  |
| Oregon Route 202 | US 101 in Astoria | OR 47 at Mist | 1935 |  |
| Oregon Route 203 | OR 86 northeast of Baker | I-84/US 30 south of La Grande | 1935 |  |