Key Turn Closures on Idaho 55
The Idaho Transportation Department (ITD) has begun work on a series of safety upgrades along Eagle Road, also known as Idaho 55, aimed at reducing crashes and improving traffic flow.
Two high-risk turning points are being permanently closed:
- Northbound left-in at Baldcypress Street
- Southbound U-turn at Bourbon Street near Ustick Road
A third location between Island Woods Drive and the north channel of the Boise River will also be blocked. Although not an official turn lane, it has been used by drivers to access a dirt road leading to river float areas.
According to ITD, these closures target areas identified as “conflict points” — places where traffic movement patterns have contributed to higher crash potential.
Crash Trends and Public Feedback
Eagle Road is Idaho’s busiest non-Interstate highway and recorded 317 crashes in 2024. While none were fatal, the frequency of incidents has prompted safety reviews. So far in 2025, 160 crashes have been reported.
ITD says it selected turn locations for closure based on:
- Historical crash data
- Traffic safety studies
- Input from the public
Two previously planned closures at Meadowdale Street and Lanark Street were dropped after further review.
Roadway Resurfacing with Microsurfacing
The safety improvements include microsurfacing a seven-mile stretch between Interstate 84 and State Street (Idaho 44). This preventative treatment extends pavement life and delays the need for major repairs.
During construction:
- All lanes will remain open during the day
- Night work will run from 10 p.m. to 5 a.m.
- At night, only one lane will be open in each direction
- Drivers may encounter rough patches and loose gravel
Work began at I-84 and will move north, with completion expected by late September.
Variable Speed Limits Coming Later
ITD plans to introduce variable speed limit signs along Eagle Road between Franklin Road and Chinden Boulevard. During peak congestion, the limit will be reduced to 45 mph; during non-peak hours, it will return to 55 mph.
While this system was scheduled to begin earlier in 2025, installation has been delayed due to manufacturing backlogs. The signs are now expected by the end of the year.
Additional driver feedback signs are also planned to help monitor and adjust speeds based on real-time conditions.
Ongoing Safety Reviews
ITD says it will continue evaluating Eagle Road for further safety improvements, including potential new measures based on crash data and driver behavior.
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