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Interstate 84 from Portland to Echo, Utah
There are two Interstate 84s. This is the western one — 770 miles from Portland, Oregon through Boise to Echo, Utah. Looking for I-84 in Connecticut, New York or Pennsylvania? That's the eastern I-84.
Radar, DOT cameras and live pavement conditions along I-84 from Oregon to Utah — plus closures, road work and the drive broken down into 3 state-by-state stretches.
Updated Sep 20, 2026 12:34 PM UTC · 3 states · Mostly dry, wet in places
Lowest 42°F near Boise, Idaho · Highest wind 8 mph near Boise, Idaho
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Interstate 84 runs 770 miles from Portland, Oregon, to a junction with I-80 near Echo, Utah. It follows the Columbia River Gorge east from Portland, climbs Cabbage Hill into the Blue Mountains past Pendleton, crosses southern Idaho end to end through Boise and Twin Falls, and enters Utah near Snowville, running with I-15 through Ogden before turning east up Weber Canyon to meet I-80 at Echo. Oregon holds the longest stretch, 376 miles.
Weather data from Sep 20, 2026 12:34 PM UTC
Measured state by state, I-84 runs 771 miles west to east from Portland, Oregon to Echo, Utah, crossing 3 states. Its longest stretch is 376 miles across Oregon; its shortest is 120 miles in Utah.
| State | Miles | Share | Cities and mile markers |
|---|---|---|---|
| Oregon | 376 | 49% | Portland 0 |
| Idaho | 275 | 36% | Boise 53 · Twin Falls 174 |
| Utah | 120 | 16% | Ogden 79 · Salt Lake City 104 (23 mi off) |
It climbs Cabbage Hill at 3,615 ft, where the weather at the summit is not the weather on the approach.
Mile markers count from each state's western line and start again at the next one, which is how most states number their exits as well. They are measured along the same road geometry these pages draw, so they land within a mile or two of the posted markers. A toll road that runs its own continuous numbering is the exception — on the New York Thruway the posts continue from New York City — and there the figure is how far into the state the place is rather than the number on the sign. Distances are measured state by state, never across a gap.
8 current reports along the route. The 6 most serious are listed below. Always check with the responsible state DOT before setting off.
Long term road construction on I-84 Westbound from Franklin IC to Centennial IC. All Lanes Affected. 11/3/2023 12:00 AM MT to 5/27/2027 6:00 PM MT Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Width Restriction: 24ft Speed Restriction: 55mph Activities: Use Caution.
Long term road construction on I-84 Eastbound from Centennial Way to Franklin Rd. 11/3/2023 12:00 AM MT to 5/27/2027 6:00 PM MT Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Width Restriction: 24ft Speed Restriction: 55mph Activities: Use Caution.
Road construction on ramp from I-84 Westbound to I-84-BL Eastbound. 9/9/2026 12:27 PM MT to 11/28/2026 5:00 PM MT Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Width Restriction: 14ft Activities: Use Caution.
Road construction on ramp from I-84-BL Eastbound to I-84 Westbound. 9/9/2026 12:27 PM MT to 11/28/2026 5:00 PM MT Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Width Restriction: 14ft Activities: Use Caution.
Major Road construction on I-84 Westbound from MM (168) to MM (165). All Lanes Intermittent. 10/27/2024 7:00 PM to 11/16/2026 7:00 PM Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Width Restriction: 22ft Speed Restriction: 65mph Activities: Use Caution.
Road construction on I-84 Eastbound from MM (165) to MM (168). All Lanes Intermittent. 7/27/2023 7:00 AM to 11/20/2026 7:00 PM Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Width Restriction: 22ft Speed Restriction: 65mph Activities: Use Caution.
Summaries fetched Sep 20, 2026 12:02 PM UTC
Summaries fetched Sep 20, 2026 12:06 PM UTC
Summaries fetched Sep 20, 2026 6:07 AM MDT
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