Project overview
This project will construct two new ramp meters to westbound I-90 at the Liberty Lake and Harvard Road interchanges in Spokane County. The ramp meters are used to space out vehicles as they enter I-90 to reduce the "platooning" of vehicles as they enter and reduce collisions. The ramp meters will also keep I-90 mainline at highway speeds.
What to expect
The two new ramp meters will be installed on the Liberty Lake Road on-ramp to westbound I-90 and the Harvard Road on-ramp to westbound I-90. During construction, travelers can expect lane and shoulder closures at times.
Map for the I-90 - Harvard Road Interchange - Ramp Meters project in Spokane County.
Ramp meters are traffic signals that operate according to real-time conditions on both the freeway and the ramps. They help reduce congestion by providing timed intervals between vehicles, rather than allowing multiple vehicles to enter the freeway at once. Studies show that ramp meters reduce collisions by up to 30 percent.
On April 9, 2019, the first ramp meter in Spokane County was activated at the ramp from northbound US 195 to eastbound I-90.
Since its activation, eight more ramp meters have been activated throughout Spokane. Locations include:
- Walnut/Maple Street to eastbound I-90
- Monroe Street to eastbound I-90
- Browne/Division Street to eastbound I-90
- Browne/Division Street to westbound I-90
- Hamilton Street to eastbound I-90
- Geiger Blvd. to eastbound I-90
- Geiger Blvd. to eastbound I-90
- US 2 to eastbound I-90
Once complete, the two ramp meters in Liberty Lake will bring the total number of ramp meters in Spokane County to 11.
