The H-1 Ramp Closures are set to impact commuters as the Hawaii Department of Transportation (HDOT) begins major overnight repaving work on key freeway ramps near South King Street and Waialae Avenue. These H-1 Ramp Closures will take place nightly from 8:30 p.m. to 4:30 a.m. for approximately two weeks, requiring drivers to plan alternate routes and expect delays.
Why These H-1 Ramp Closures Are Happening
According to HDOT, the H-1 Ramp Closures are necessary to complete full repaving operations. This work aims to improve road safety, driving conditions, and overall infrastructure quality along one of Honolulu’s busiest freeway corridors.
Motorists are advised to stay alert, follow posted signs, and allow extra travel time during these overnight closures.
Detailed Schedule of H-1 Ramp Closures and Detours
Tuesday, March 17
- Closure: Complete shutdown of the South King Street off-ramp (Exit 25A) from the eastbound H-1 Freeway
- Detour: Drivers should continue eastbound on H-1 and exit at 6th Avenue (Exit 25B), then use Harding Avenue to reach King Street
Wednesday, March 18
- Closure:
- Two left lanes closed on eastbound South King Street near Kahuna Lane
- Right lane closed on the King Street off-ramp (Exit 25A)
- Detour: Stay on South King Street and use Kapiolani Boulevard to reach the off-ramp
Thursday, March 19
- Closure:
- Two left lanes closed on eastbound South King Street
- Full closure of off-ramp from westbound Waialae Avenue to South King Street
- Full closure of the South King Street on-ramp to eastbound H-1
- Detour: Continue on South King Street and connect via Kapiolani Boulevard
Friday, March 20
- Closure:
- Left lane closed on westbound Waialae Avenue (Koali Road to King Street ramps)
- Full closure of King Street off-ramp (Exit 25A) from westbound H-1
- Full closure of South King Street off-ramp from Waialae Avenue
- No left turns from eastbound to westbound South King Street
- Detour: Continue westbound on H-1 and exit at University Avenue (Exit 24B), then make a U-turn to access South King Street
Monday, March 23
- Closure:
- Right lane closed on eastbound South King Street (University Avenue to Kapiolani Boulevard)
- Right lane closed on King Street off-ramp (Exit 25A)
Tuesday, March 24
- Closure:
- Full closure of westbound H-1 off-ramp from Waialae Avenue
- Two right lanes closed on Waialae Avenue
- One right lane closed on westbound H-1 between King Street off-ramp and Waialae on-ramp
- Detour: Use South King Street off-ramp to University Avenue to rejoin westbound H-1
What Drivers Should Expect During H-1 Ramp Closures
During these H-1 Ramp Closures, drivers should expect:
- Increased traffic congestion during late-night hours
- Clearly marked detour routes
- Traffic control personnel and safety barriers in work zones
Planning your route in advance will help reduce delays and ensure a smoother commute.
Safety Reminder from HDOT
HDOT urges all motorists to:
- Drive carefully through construction zones
- Follow posted signs and lane markings
- Stay alert for workers and equipment
These H-1 Ramp Closures are temporary but essential for long-term road improvements.
The upcoming H-1 Ramp Closures are part of an important infrastructure upgrade designed to improve road quality and safety for all drivers. While the overnight work may cause short-term inconvenience, following detours and planning ahead can help minimize disruptions.
Staying informed about daily closures will ensure a smoother and safer commute throughout the project duration.