New I-84 Lanes to Open Near Twin Falls After Weekend Traffic Shifts

New I-84 lanes near Twin Falls Interchange

The Idaho Transportation Department is preparing to open new lanes on Interstate 84 following a series of strategic traffic shifts scheduled for the weekend of November 13-14.

These shifts near the Twin Falls Interchange, also known as Exit 173, represent a major milestone in a long-term infrastructure project aimed at increasing highway capacity.

According to reports from the Idaho Transportation Department, the transition will occur during overnight hours to minimize the impact on daily commuters. Once these shifts are finalized, the highway will reach its new configuration, providing three lanes in each direction for the stretch west of the interchange and two lanes in each direction for the area to the east.

The project, which first broke ground in 2023, was initiated to address safety concerns and accommodate growing traffic volumes by widening the interstate. As crews move into the final stages of the project, which is expected to conclude in late November, motorists should prepare for continued intermittent lane closures.

Weekend traffic shift schedule

Drivers traveling through the Twin Falls area should plan for specific disruptions during the upcoming weekend. The Idaho Transportation Department has outlined a tiered schedule for the traffic shifts:

New I-84 Lanes to Open Near Twin Falls After Weekend Traffic Shifts — Photo: kmvt.com

Friday night, Nov. 13: Eastbound I-84 traffic will shift between 8 p.m. and 6 a.m. on Saturday, Nov. 14.
Saturday night, Nov. 14: Westbound I-84 traffic will shift between 8 p.m. and 6 a.m. on Sunday, Nov. 15.

KMVT reported that the westbound shift on Saturday night will include a specific closure of the loop westbound on-ramp at the Twin Falls Interchange. During this window, between 8 p.m. and 6 a.m., drivers will be required to use the alternative westbound on-ramp to enter I-84.

Because these operations depend heavily on environmental conditions, officials noted that the work is weather-dependent. Unfavorable weather could lead to delays in the shifting process or the opening of the new lanes.

Impact on regional commuters

The widening of I-84 serves as a critical response to the economic and logistical demands of the Magic Valley region. By expanding the corridor to three lanes in each direction west of Exit 173, the state aims to reduce bottlenecks that have historically impacted both local transit and long-haul freight moving through southern Idaho.

While the added capacity promises smoother travel in the long run, drivers must currently travel through a construction zone. The Idaho Transportation Department encourages anyone traveling through the area to leave earlier than usual and to remain vigilant of all posted signage. For real-time updates and route planning, travelers can consult 511.idaho.gov.

The transition from the old lane configuration to the expanded three-lane system marks the beginning of the end for this multi-year construction effort. As the project nears its late November completion, the focus shifts from heavy structural expansion to the final touches of the roadway surface and lane markings.