| Numbered Routes of the Oregon Highway System | |
|---|---|
   Highway markers for Oregon Route 7, Oregon Route 99 and Oregon Route 140 | |
| System information | |
| Maintained by ODOT | |
| Highway names | |
| Interstates | Interstate nn (I-nn) |
| US Highways | U.S. Route nn (US nn) |
| State | Oregon Route nn (OR nn) |
| Named highways | xx Highway No. nn |
| System links | |
In the U.S. state of Oregon, there are two systems for categorizing roads in the state highway system: named state highways and numbered state routes. Named highways, such as the Pacific Highway No. 1 or the North Umpqua Highway East No. 138, are primarily used internally by the Oregon Department of Transportation (ODOT) whereas numbered routes, such as Interstate 5 (I-5), U.S. Highway 20 (US 20), or Oregon Route 140 (OR 140), are posted on road signs and route markers. The two systems overlap significantly, but the route numbers are not necessarily coterminous with highway names and some routes may comprise several highways. For example, OR 47 is overlaid on the Mist–Clatskanie Highway No. 110, Nehalem Highway No. 102, and Tualatin Valley Highway No. 29. In addition to OR 47, the Tualatin Valley Highway No. 29 also comprises part of OR 8.
Mainline routes
| Number | Length (mi) | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | |
|---|---|---|---|---|---|---|---|---|
 OR 2
|
— | — | US 101 south of Seaside | OR 10 in Portland | 01932-01-011932 | 01952-01-011952 | ||
 OR 3
|
43.13 | 69.41 | OR 82 in Enterprise | SR 129 towards Clarkston, WA | 01932-01-011932 | current | ||
 OR 6
|
51.25 | 82.48 | US 101 / OR 131 in Tillamook | US 26 west of North Plains | 01932-01-011932 | current | ||
 OR 7
|
52.78 | 84.94 | US 26 south of Austin | I-84 in Baker | 01932-01-011932 | current | ||
 OR 8
|
19.20 | 30.90 | OR 6 near Gales Creek | US 26 east of Beaverton | 01936-01-011936 | current | ||
 OR 10
|
18.55 | 29.85 | OR 219 south of Hillsboro | US 26 in Portland | 01932-01-011932 | current | ||
 OR 11
|
34.06 | 54.81 | I-84 near Pendleton | SR 125 towards Walla Walla, WA | 01932-01-011932 | current | ||
 OR 14
|
— | — | US 101 at Hebo | OR 18 west of Willamina | 01932-01-011932 | 01952-01-01c. 1952 | ||
 OR 15
|
— | — | US 30 in Pendleton | US 730 at Cold Springs | 01932-01-011932 | 01934-01-011934 | ||
 OR 18
|
52.78 | 84.94 | US 101 west of Otis Junction | OR 99W north of Dayton | 01932-01-011932 | current | ||
 OR 19
|
120.57 | 194.04 | US 26 northwest of Dayville | I-84 / US 30 in Arlington | 01932-01-011932 | current | ||
 OR 22
|
139.01 | 223.71 | US 101 at Hebo | US 20 west of Suttle Lake | 01932-01-011932 | current | ||
 OR 23
|
— | — | US 97 at Cow Canyon | US 30 in The Dalles | 01932-01-011932 | 01952-01-011952 | ||
 OR 26
|
— | — | US 101 in Newport | OR 99E in Albany | 01932-01-011932 | 01945-01-011945 | ||
 OR 27
|
44.79 | 72.08 | US 20 west of Brothers | US 26 in Prineville | 01932-01-011932 | current | ||
 OR 31
|
120.57 | 194.04 | US 395 at Valley Falls | US 97 south of La Pine | 01932-01-011932 | current | ||
 OR 32
|
— | — | US 730 east of Umatilla | US 30 near Stanfield | 01945-01-01c. 1945 | 01973-01-011973 | ||
 OR 34
|
81.40 | 131.00 | US 101 in Waldport | US 20 in Lebanon | 01932-01-011932 | current | ||
 OR 35
|
41.54 | 66.85 | US 26 east of Government Camp | I-84 / US 30 west of Hood River | 01932-01-011932 | current | ||
 OR 36
|
51.58 | 83.01 | OR 126 in Mapleton | OR 99 near Junction City | 01936-01-011936 | current | ||
 OR 37
|
31.13 | 50.10 | US 30 in Pendleton | US 730 at Cold Springs | 01973-01-011973 | current | ||
 OR 38
|
57.09 | 91.88 | US 101 in Reedsport | I-5 / OR 99 near Drain | 01932-01-011932 | current | ||
 OR 39
|
23.64 | 38.04 | SR 139 towards Alturas, CA | US 97 in Klamath Falls | 01932-01-011932 | current | ||
 OR 42
|
73.32 | 118.00 | US 101 north of Coquille | I-5 / OR 99 south of Roseburg | 01932-01-011932 | current | ||
 OR 43
|
11.60 | 18.67 | OR 99E in Oregon City | US 26 in Portland | 01932-01-01c. 1932 | current | ||
 OR 46
|
19.33 | 31.11 | US 199 in Cave Junction | Oregon Caves National Monument and Preserve | 01932-01-011932 | current | ||
 OR 47
|
79.51 | 127.96 | OR 99W north of McMinnville | US 30 in Clatskanie | 01932-01-011932 | current | ||
 OR 50
|
— | — | OR 10 in Portland | US 97 in Madras | 01932-01-011932 | 01952-01-011952 | ||
 OR 51
|
8.69 | 13.99 | OR 99W / OR 194 in Monmouth | OR 22 west of Salem | 01932-01-011932 | current | ||
 OR 52
|
1.65 | 2.66 | SH-52 in Payette, ID | OR 201 north of Ontario | 01957-01-011957 | current | ||
 OR 52
|
— | — | US 26 near Bear Springs | US 197 near Maupin | 01932-01-011932 | 01956-01-011956 | ||
 OR 53
|
18.91 | 30.43 | US 101 near Wheeler | US 26 at Necanicum | 01939-01-011939 | current | ||
 OR 54
|
— | — | OR 99E in Albany | US 28 in Vale | 01932-01-011932 | 01941-01-011941 | ||
 OR 58
|
86.75 | 139.61 | I-5 / OR 99 at Goshen | US 97 north of Chemult | 01932-01-011932 | current | ||
 OR 62
|
83.52 | 134.41 | OR 99 / OR 238 in Medford | US 97 south of Chiloquin | 01932-01-011932 | current | ||
 OR 66
|
59.68 | 96.05 | OR 99 in Ashland | US 97 south of Klamath Falls | 01932-01-011932 | current | ||
 OR 69
|
9.90 | 15.93 | OR 126 in Eugene | I-5 in Springfield | 02002-01-012002 | 02007-01-012007 | Renamed OR 569 due to vandalism | |
 OR 70
|
6.97 | 11.22 | OR 140 at Dairy | Bonanza | 01932-01-011932 | current | ||
 OR 74
|
85.09 | 136.94 | I-84 / US 30 east of Arlington | US 395 at Nye | 01932-01-011932 | current | ||
 OR 78
|
91.55 | 147.34 | US 20 / US 395 in Burns | US 95 at Burns Junction | 01932-01-011932 | current | ||
 OR 82
|
70.74 | 113.84 | US 30 in La Grande | Joseph | 01932-01-011932 | current | ||
 OR 86
|
67.82 | 109.15 | I-84 near Baker | Near Hells Canyon, ID | 01932-01-011932 | current | ||
 OR 90
|
— | — | OR 201 north of Ontario | SH-52 in Payette, ID | 01932-01-011932 | 01957-01-01c. 1957 | ||
 OR 99
|
205.00 | 329.92 | I-5 south of Ashland | OR 99E / OR 99W in Junction City | 01972-01-011972 | current | ||
 OR 99E
|
109.78 | 176.67 | OR 99 / OR 99W in Junction City | I-5 in North Portland | 01972-01-011972 | current | ||
 OR 99W
|
124.15 | 199.80 | OR 99E / OR 99 in Junction City | I-5 in Tigard | 01972-01-011972 | current | ||
 OR 103
|
9.02 | 14.52 | US 26 near Elsie | OR 202 at Jewell | 02002-01-012002 | current | ||
 OR 104
|
6.03 | 9.70 | US 101 south of Warrenton | Fort Stevens State Park | 02002-01-012002 | current | ||
 OR 120
|
2.71 | 4.36 | North Portland | I-5 / OR 99E in North Portland | 02002-01-012002 | current | Unsigned | |
 OR 126
|
204.63 | 329.32 | US 101 in Florence | US 26 in Prineville | 01972-01-011972 | current | ||
 OR 127
|
8 | 13 | US 26 in Hillsboro | US 30 in Burlington | 02021-01-012021 | current | ||
 OR 130
|
9.40 | 15.13 | US 101 southwest of Hebo | OR 22 at Dolph | 02002-01-012002 | current | ||
 OR 131
|
9.08 | 14.61 | Oceanside | US 101/OR 6 in Tillamook | 02002-01-012002 | current | ||
 OR 132
|
1.6 | 2.6 | I-105 in Eugene | OR 569 in Eugene | 01964-01-011964 | current | minimally signed; also referred to as Delta Hwy. | |
 OR 138
|
140.58 | 226.24 | OR 38 at Elkton | US 97 south of Chemult | 01960-01-01c. 1960 | current | ||
 OR 140
|
237.01 | 381.43 | OR 62 near White City | SR 140 towards Winnemucca, NV | 01960-01-01c. 1960 | current | ||
 OR 141
|
10.46 | 16.83 | I-5 in Wilsonville | OR 217 in Beaverton | 02002-01-012002 | current | Unsigned | |
 OR 153
|
14.34 | 23.08 | OR 18 at Bellevue | OR 221 east of Hopewell | 02002-01-012002 | current | Unsigned | |
 OR 154
|
5.74 | 9.24 | OR 153 | OR 233 southwest of Dayton | 02002-01-012002 | current | Minimally signed | |
 OR 164
|
8.39 | 13.50 | I-5 / OR 99E in Millersburg | I-5 / OR 99E north of Jefferson | 02002-01-012002 | current | ||
 OR 173
|
5.37 | 8.64 | US 26 east of Government Camp | Timberline Lodge | 02002-01-012002 | current | Unsigned | |
 OR 180
|
19.23 | 30.95 | Crystal Creek Loop at Eddyville | US 20 at Blodgett | 02002-01-012002 | current | Unsigned | |
 OR 182
|
0.75 | 1.21 | Devils Punch Bowl State Natural Area | US 101 north of Newport | 02002-01-012002 | 02005-01-012005 | Unsigned | |
 OR 194
|
7.56 | 12.17 | OR 223 south of Dallas | OR 51 / OR 99W in Monmouth | 02002-01-012002 | current | Unsigned | |
 OR 200
|
42.11 | 67.77 | North of Curtin | OR 99W in Monroe | 02002-01-012002 | current | Unsigned | |
 OR 201
|
60.21 | 96.90 | SH-19 towards Homedale, ID | I-84 / US 30 south of Huntington | 01935-01-011935 | current | ||
 OR 202
|
45.98 | 74.00 | US 101 in Astoria | OR 47 at Mist | 01935-01-011935 | current | ||
 OR 203
|
49.23 | 79.23 | OR 86 northeast of Baker | I-84 / US 30 south of La Grande | 01935-01-011935 | current | ||
 OR 204
|
41.89 | 67.42 | OR 11 north of Weston | OR 82 in Elgin | 01935-01-011935 | current | ||
 OR 205
|
73.35 | 118.05 | Roaring Springs Ranch | OR 78 east of Burns | 01935-01-011935 | current | ||
 OR 206
|
101.66 | 163.61 | I-84 / US 30 at Celilo | OR 74 in Heppner | 01935-01-011935 | current | ||
 OR 207
|
152.30 | 245.10 | US 26 in Mitchell | US 730 west of Cold Springs | 01935-01-011935 | current | ||
 OR 208
|
— | — | OR 219 south of Hillsboro | OR 10 in Beaverton | 01935-01-011935 | 01985-01-011985 | ||
 OR 209
|
— | — | OR 62 | OR 58 at Crescent Lake Junction | 01935-01-011935 | 01984-01-011984 | ||
 OR 210
|
12.1 | 19.5 | OR 219 at Scholls | OR 10 west of Hillsdale | 01935-01-011935 | current | ||
 OR 211
|
46.8 | 75.3 | OR 99E north of Woodburn | US 26 in Sandy | 01935-01-011935 | current | ||
 OR 212
|
11.7 | 18.8 | I-205 near Clackamas | US 26 west of Sandy | 01935-01-011935 | current | ||
 OR 213
|
55.66 | 89.58 | I-5 / OR 99E in Salem | Portland International Airport | 01935-01-011935 | current | ||
 OR 214
|
44.79 | 72.08 | I-5 in Woodburn | OR 22 west of Shaw | 01935-01-011935 | current | ||
 OR 215
|
— | — | OR 211 west of Molalla | OR 99E in Oregon City | 01935-01-011935 | 01952-01-01c. 1952 | ||
 OR 216
|
61.30 | 98.65 | US 26 near Bear Springs | US 97 in Grass Valley | 01935-01-011935 | current | ||
 OR 217
|
7.52 | 12.10 | I-5 east of Tigard | US 26 at Cedar Hills | 01935-01-011935 | current | ||
 OR 218
|
42.08 | 67.72 | US 97 at Shaniko | OR 19 in Fossil | 01935-01-011935 | current | ||
 OR 219
|
36.47 | 58.69 | I-5 in Woodburn | OR 8 in Hillsboro | 01935-01-011935 | current | ||
 OR 220
|
— | — | Sumpter | OR 7 at Salisbury | 01935-01-011935 | 01980-01-01c. 1980 | ||
 OR 221
|
20.74 | 33.38 | OR 22 in Salem | OR 18 northeast of Dayton | 01935-01-011935 | current | ||
 OR 222
|
20.74 | 33.38 | OR 99 in Creswell | OR 126B in Springfield | 02002-01-012002 | current | Unsigned | |
 OR 222
|
— | — | OR 99EB in Salem | US 20 / OR 126 west of Suttle Lake | 01935-01-011935 | 01952-01-01c. 1952 | ||
 OR 223
|
31.40 | 50.53 | US 20 near Wren | OR 22 west of Rickreall | 01935-01-011935 | current | ||
 OR 224
|
49.12 | 79.05 | OR 99E in Milwaukie | Near Ripplebrook | 01962-01-011962 | current | ||
 OR 224
|
7.56 | 12.17 | OR 223 south of Dallas | OR 51 / OR 99W in Monmouth | 01935-01-011935 | 01944-01-011944 | ||
 OR 225
|
2.52 | 4.06 | OR 99 in Creswell | OR 126B in Springfield | 02002-01-012002 | current | Unsigned | |
 OR 225
|
— | — | OR 99 in Sutherlin | OR 38 in Elkton | 01935-01-011935 | 01965-01-011965 | ||
 OR 226
|
25.71 | 41.38 | US 20 at Crabtree Corners | OR 22 at Mehama | 01935-01-011935 | current | ||
 OR 227
|
11.26 | 18.12 | OR 62 at Trail | South of Tiller | 02002-01-012002 | current | Initially established 1935, decommissioned 1986 | |
 OR 228
|
21.40 | 34.44 | OR 99E in Halsey | US 20 in Sweet Home | 01935-01-011935 | current | ||
 OR 229
|
31.27 | 50.32 | US 20 north of Toledo | US 101 at Kernville | 01935-01-011935 | current | ||
 OR 230
|
23.80 | 38.30 | OR 62 near Union Creek | OR 138 near Diamond Lake | 01935-01-011935 | current | ||
 OR 231
|
— | — | US 99 in Divide | US 99 / OR 58 in Goshen | 01957-01-011957 | 01962-01-01c. 1962 | Former US 99, which was rerouted via I-5; US 99 was rerouted back onto this road | |
 OR 232
|
— | — | OR 62 in Fort Klamath | US 97 | 01935-01-011935 | 01984-01-01c. 1984 | Originally went from US 97 to OR 209 in Crater Lake National Park | |
 OR 233
|
10.70 | 17.22 | OR 99W north of Amity | OR 99W northeast of Dayton | 01935-01-011935 | current | ||
 OR 234
|
17.78 | 28.61 | I-5 west of Gold Hill | OR 62 north of Eagle Point | 01935-01-011935 | current | ||
 OR 235
|
— | — | US 99 southeast of Dillard | OR 38 in Drain | 01956-01-011956 | 01962-01-01c. 1962 | Former US 99, which was rerouted via I-5; US 99 was rerouted back onto this road | |
 OR 236
|
— | — | OR 62 in Eagle Point | US 97 in Klamath Falls | 01935-01-011935 | 01946-01-01c. 1946 | ||
 OR 237
|
38.93 | 62.65 | I-84/US 30 at North Powder | OR 82 in Island City | 01935-01-011935 | current | ||
 OR 238
|
38.93 | 62.65 | US 199/OR 99 south of Grants Pass | OR 99 in Medford | 01935-01-011935 | current | ||
 OR 240
|
11.50 | 18.51 | OR 47 in Yamhill | OR 99W in Newberg | 01935-01-011935 | current | ||
 OR 241
|
18.92 | 30.45 | US 101 in Coos Bay | East of Nesika County Park | 02002-01-012002 | current | ||
 OR 242
|
36.59 | 58.89 | OR 126 south of Belknap Springs | US 20 / OR 126 in Sisters | 01962-01-011962 | current | ||
 OR 242
|
— | — | US 99E in Woodburn | OR 219 southeast of St. Paul | 01935-01-011935 | 01952-01-011952 | ||
 OR 244
|
47.22 | 75.99 | US 395 west of Ukiah | I-84/US 30 at Hilgard | 01980-01-01c. 1980 | current | ||
 OR 244
|
— | — | US 99W nearTualatin | OR 43 in West Linn | 01935-01-011935 | 01952-01-011952 | ||
 OR 245
|
36.62 | 58.93 | US 26 near Unity | OR 7 near Salisbury | 01981-01-01c. 1981 | current | ||
 OR 250
|
5.41 | 8.71 | US 101 north of Port Orford | Cape Blanco State Park | 02002-01-012002 | current | Unsigned | |
 OR 251
|
0.76 | 1.22 | Port Orford Heads State Park | US 101 in Port Orford | 02002-01-012002 | current | Unsigned | |
 OR 255
|
27.60 | 44.42 | US 101 at Brookings | US 101 south of Gold Beach | 02002-01-012002 | current | ||
 OR 260
|
20.84 | 33.54 | US 199 southwest of Grants Pass | Grants Pass | 02002-01-012002 | current | ||
 OR 273
|
12.42 | 19.99 | I-5 south of Siskiyou Summit | OR 66 southeast of Ashland | 02002-01-012002 | current | Unsigned | |
 OR 281
|
19.01 | 30.59 | OR 35 at Mt. Hood | US 30/OR 35 in Hood River | 02002-01-012002 | current | ||
 OR 282
|
3.45 | 5.55 | OR 281 south of Hood River | OR 35 south of Hood River | 02002-01-012002 | current | ||
 OR 293
|
13.58 | 21.85 | US 97 north of Madras | OR 218 in Antelope | 02002-01-012002 | current | ||
 OR 331
|
4.84 | 7.79 | I-84 / US 30 southeast of Pendleton | OR 11 northeast of Pendleton | 02002-01-012002 | current | Minimal Signage | |
 OR 332
|
7.93 | 12.76 | Washington state line | OR 11 north of Milton-Freewater | 02002-01-012002 | current | ||
 OR 334
|
18.12 | 29.16 | OR 37 north of Myrick | OR 11 east of Athena | 02002-01-012002 | current | Unsigned | |
 OR 335
|
18.12 | 29.16 | OR 11 northeast of Pendleton | Helix | 02002-01-012002 | current | Unsigned | |
 OR 339
|
3.43 | 5.52 | OR 11 in Milton-Freewater | Washington state line | 02002-01-012002 | current | ||
 OR 350
|
29.36 | 47.25 | OR 82 / OR 351 in Joseph | Imnaha | 02002-01-012002 | current | Unsigned | |
 OR 351
|
6.94 | 11.17 | South of Wallowa Lake | OR 82 / OR 350 in Joseph | 02002-01-012002 | current | Unsigned | |
 OR 361
|
11.62 | 18.70 | US 97 southeast of Culver | US 26/US 97 in Madras | 02002-01-012002 | current | Unsigned | |
 OR 370
|
17.87 | 28.76 | US 97 north of Redmond | OR 126 in Prineville | 02002-01-012002 | current | Unsigned | |
 OR 380
|
55.49 | 89.30 | US 26 in Prineville | East of Paulina | 02002-01-012002 | current | ||
 OR 402
|
34.88 | 56.13 | OR 19 at Kimberly | US 395 in Long Creek | 02002-01-012002 | current | ||
 OR 410
|
3.71 | 5.97 | Sumpter | OR 7 southeast of Sumpter | 02002-01-012002 | current | Unsigned | |
 OR 411
|
— | — | OR 229 in Siletz | OR 180 in Nashville | 02002-01-012002 | current | Signed as Logsden Road; not state-maintained | |
 OR 413
|
11.45 | 18.43 | OR 86S / OR 414 in Halfway | Cornucopia | 02002-01-012002 | current | Unsigned | |
 OR 414
|
0.91 | 1.46 | OR 86S / OR 413 in Halfway | OR 86 east of Halfway | 02002-01-012002 | current | Unsigned | |
 OR 422
|
5.29 | 8.51 | South of Klamath Agency | US 97 southwest of Chiloquin | 02002-01-012002 | current | ||
 OR 429
|
2.39 | 3.85 | Near Crescent Lake | OR 58 at Crescent Lake Junction | 02002-01-012002 | current | Unsigned | |
 OR 451
|
10.39 | 16.72 | US 20 southwest of Vale | US 20 in Vale | 02002-01-012002 | current | Unsigned | |
 OR 452
|
2.75 | 4.43 | OR 201 southwest of Adrian | SH-18 towards Parma, ID | 02002-01-012002 | current | Unsigned | |
 OR 453
|
5.09 | 8.19 | OR 454 southeast of Adrian | Idaho state line | 02002-01-012002 | current | Unsigned | |
 OR 454
|
5.09 | 8.19 | OR 452 southeast of Adrian | Idaho state line | 02002-01-012002 | current | Unsigned | |
 OR 501
|
9.49 | 15.27 | Southwest of Alsea | OR 34 at Alsea | 02002-01-012002 | current | ||
 OR 528
|
1.40 | 2.25 | OR 126B in Springfield | OR 126 in Springfield | 02002-01-012002 | current | ||
 OR 540
|
14.20 | 22.85 | Cape Arago State Park | US 101 in North Bend | 02002-01-012002 | current | ||
 OR 542
|
18.78 | 30.22 | Powers | OR 42 southeast of Myrtle Point | 02002-01-012002 | current | Unsigned | |
 OR 551
|
5.94 | 9.56 | OR 99E southwest of Aurora | I-5 in Wilsonville | 02002-01-012002 | current | ||
 OR 569
|
9.90 | 15.93 | OR 126 in Eugene | I-5 in Springfield | 02007-01-012007 | current | Formerly OR 69 | |
| ||||||||
Special routes
| Number | Length (mi) | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | |
|---|---|---|---|---|---|---|---|---|
 OR 18 Bus.
|
8.56 | 13.78 | OR 18 at Wallace Bridge | OR 18 east of Sheridan | 01957-01-011957 | current | ||
 OR 42S
|
16.94 | 27.26 | US 101 in Bandon | OR 42 in Coquille | 01950-01-01c. 1950 | current | ||
 OR 86S
|
1.15 | 1.85 | OR 86 northeast of Richland | OR 413 / OR 414 in Halfway | 02002-01-012002 | current | Unsigned | |
 OR 99E Bus.
|
9.77 | 15.72 | I-5 / OR 22 / OR 99E in Salem | OR 99E north of Salem | 01986-01-011986 | current | ||
 OR 104S
|
0.95 | 1.53 | OR 104 in Warrenton | US 101 in Warrenton | 02002-01-012002 | current | Unsigned now; was briefly signed | |
| OR 126 Bus.
|
— | — | I-105 / OR 99 / OR 126 in Eugene | OR 126 in Springfield | 01972-01-011972 | current | ||
 OR 422S
|
0.19 | 0.31 | OR 422 in Chiloquin | Chiloquin | 02002-01-012002 | current | Unsigned | |
References
- Oregon Department of Transportation (May 2004). "The Interstate Highway System in Oregon: A Historic Overview". Retrieved April 24, 2018.
- Oregon Department of Transportation (2006). "Interstate 50th Anniversary: The Story of Oregon's Interstates". Archived (PDF) from the original on December 15, 2006. Retrieved April 24, 2018.
- Oregon Department of Transportation (August 4, 2017). "History of State Highways in Oregon" (PDF). Retrieved April 24, 2018.
- Oregon Department of Transportation (July 2007). "Descriptions of US and OR Routes" (PDF). Archived (PDF) from the original on October 26, 2007. Retrieved April 24, 2018.