JEROME, Idaho — Drivers traveling the busy stretch of Interstate 84 between Twin Falls and Jerome will need to brace for more construction impacts as Idaho’s major highway expansion enters its next phase — but there is also light at the end of the barrel-lined tunnel.

Work on the I-84 corridor began back in April 2023, with crews tackling a long-awaited project to widen and modernize this key southern Idaho link. “When the project is complete, there will be three lanes in each direction,” said Courtney Wagner of the Idaho Transportation Department (ITD). The goal is to ease traffic congestion and boost safety for the thousands who rely on this stretch every day.

Key Milestones Achieved

About halfway through the multi-year project, progress is visible. “So far, we've paved the westbound on and off ramps, and we're currently working on the eastbound on and off ramps,” Wagner said. She also confirmed that the Lincoln Avenue bridges and other key structures are finished. The new South Jerome interchange is clearly taking shape as crews move into the next stage of paving and finishing work.

The Jerome portion of the project is expected to continue for another 18 months, with full completion targeted for 2027.

Twin Falls Exit Opening Sooner

Meanwhile, commuters have reason to celebrate some good news on the other end of the project. “Exit 173 will hopefully be open by the end of 2025 or the beginning of 2026,” Wagner added. The Twin Falls exit is tracking slightly ahead of schedule — a relief for drivers who have navigated detours and shifting traffic patterns for months.‍

Staying Safe in a Busy Work Zone

As with any major highway overhaul, construction brings its share of frustrations for drivers. Wagner acknowledged the challenges. “There are always some growing pains with construction, right? It can disrupt your day and cause congestion,” she said. “We are receiving some valid concerns because, admittedly, it can feel a little intimidating with barriers right there.”

One of the biggest complaints has been the visibility of the new Twin Falls exit, especially at night. Poor visibility could cause drivers to overshoot the exit — forcing them to drive an extra nine miles before a safe turnaround is available. Wagner urged caution: “If you miss it, you will simply have to continue to the next exit. Do not attempt an illegal U-turn; that is not safe at all.”

She also explained why adding more lighting might not be the best solution. “It can actually be more difficult to see when we bring in lighting, as it might create more problems with traffic and congestion because the light can be more distracting,” Wagner said.

A Reminder for Drivers

As construction barrels remain a daily sight for the next year and a half, ITD and the Idaho State Police are reminding all drivers to stay alert and respectful of the work zone: slow down, stay off your phone, and allow plenty of room to react.

The community’s patience is paying off, Wagner stressed, and the finished project will mean safer, smoother travel for years to come.

Originally reported by Joey Martin in Idaho News 6.