Oregon Route 203

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Oregon Route 203 marker

Oregon Route 203
Route information
Maintained by ODOT
Length: 49.23 mi (79.23 km)
Existed: 1935 – present
Major junctions
South end: I-84 in Baker City
  OR 237 in Union
North end: I-84 / US 30 in La Grande
Highway system
OR 202 OR 204

Oregon Route 203 is an Oregon state highway running from Interstate 84 near La Grande to I-84 near Baker City. OR 203 is composed of part of the La Grande-Baker Highway No. 66 (see Oregon highways and routes) and the Medical Springs Highway No. 340. It is a combined 49.23 miles (79.23 km) long and runs north–south.

Route description[edit]

OR 203 begins at an intersection with I-84 and U.S. Route 30 near La Grande. It heads southeast through Hot Lake to Union, where it overlaps OR 237 for 0.58 miles (0.93 km). After the concurrency ends, OR 203 continues southeast to Medical Springs, then turns south, southwest, and west to an intersection with I-84 near Baker City, where it ends.

The official description of OR 203 indicates that it ends at an intersection with OR 86 near Baker City. Current Department of Transportation charts, however, suggest that this description is outdated.

History[edit]

Highway 203 was first opened in 1935. Over the decades that followed, various sections of Catherine Creek southeast of Union were channelized to avoid impinging on the roadway. This area of Catherine Creek has recently been the focus of restoration efforts, since some sections support high populations of threatened anadromous fish.

Major intersections[edit]

Highway Milepost City Intersection
La Grande-Baker 5.36 La Grande Interstate 84 and U.S. Route 30
La Grande-Baker 15.93 Union OR 237 (Begin concurrency)
La Grande-Baker / Medical Springs 16.51 / 0.00 Union OR 237 (End concurrency)
Medical Springs 38.94 Baker City I-84

OR 203 begins at milepost 5.36 and restarts mileposts at Union because Oregon numbers mileposts along highways.

Related routes[edit]

References[edit]