I-84 is a major route from Portland to eastern Oregon and Idaho. It is heavily traveled year-round, is part of the national highway system and is also a designated freight and vertical clearance route.
Many signs along I-84 and I-82 are faded and have lost reflectivity, making them difficult to see and read, especially at night or during other low light conditions.
Project elements include:
- We will replace all mainline and ramp signs in poor condition.
- Mileposts and traveler information signs (blue signs with restaurants, gas and other services) will not be replaced. Some blue rest area signs will be replaced, depending on their location and condition.
- Ground-mounted signs will receive new sign supports.
- Cantilever and bridge structures will remain.
- Some signs may be removed from undercrossing structures to ground-mounted supports to reduce future maintenance costs.
This project will be constructed in two stages.
- Stage 1
- I-84: Cascade Locks-Pendleton (mileposts 47.10-212.5)
- I-82: (mileposts 0-10.68).
- Stage 2
- I-84: Pendleton-Idaho (mileposts 212.5 and 378.01).
I-84: Columbia River Highway
I-84: Old Oregon Trail Highway
I-82: McNary Highway
Cost and Funding
Construction cost for each stage is estimated at $9.5 million.
David Evans and Associates are on contract as project consultants.