Traffic Control Measures for the Eastern Section of the Central Cross-Island Highway (Provincial Highway 8) (Dayuling–Taroko) – August 2026

Following the April 3, 2024 earthquake, the Taroko Maintenance Office of the Eastern Region Branch, Highway Bureau, has continued emergency repair and reconstruction works while taking into consideration the transportation needs of local industries and road users. Every month, representatives of residents from the Greater Tianxiang area, industry associations, businesses, government agencies, and geotechnical engineering consultants familiar with the Central Cross-Island Highway are invited to jointly discuss and establish traffic control measures for the following month.

Following the meeting held on July 24, 2026, the traffic control measures for August 2026 are as follows:

1. Guanyuan – Tianxiang

Provincial Highway 8 (114.6 km – 167.1 km)

(1) Traffic Opening Hours

Two-way traffic is permitted daily from 06:30 to 16:30.

Traffic Control Points

West End: Guanyuan (in front of Hehuan Police Station, 114.6 km)
East End: West entrance of Tianxiang (167.1 km)
(2) Road Clearance Period

16:30–18:30 daily

No vehicles may enter the controlled section. Vehicles already inside may exit only.

(3) Nighttime Closure

18:30–06:30 (the following day)

The road is closed nightly.

(4) Construction Control Section

112.6 km (Guanyuan Section)

Traffic will generally be released once every hour, with release timing coordinated according to westbound traffic departing Tianxiang to minimize waiting time for road users.

2. Tianxiang – Taroko Entrance

Provincial Highway 8 (167.7 km – 184.5 km)

(1) Traffic Opening Hours

Traffic is released five times daily between 06:30 and 18:00 during the following periods:

06:30–08:00
10:00–10:05
12:00–13:00
15:00–15:05
17:00–18:00

Traffic Control Points

West End: West side of Lushui Hydrological Bridge (169.5 km)
East End: East portal of Shakadang Tunnel
(2) Road Clearance Period

18:00–18:30 daily

No vehicles may enter the controlled section. Vehicles already inside may exit only.

(3) Nighttime Closure

18:30–06:30 (the following day)

The road is closed nightly.

(4) Construction Control Sections

The following seven construction zones will follow the five scheduled traffic release periods or implement temporary traffic control depending on construction conditions:

(1) 170.5 km – Cimu Bridge
(2) 172.2 km – West Portal of Jiuqudong Tunnel
(3) 173.5 km – East Portal of Jiuqudong Tunnel
(4) 174.9 km – East Portal of Zhuilu Tunnel
(5) 175.5 km – West Portal of Jinheng Tunnel
(6) 179 km – Xipan Section
(7) 180.5 km – West End of Ning'an Bridge

During each scheduled release, all construction zones will coordinate with one another. Vehicles waiting at either end of each work zone before the release period will be allowed to pass before construction traffic control resumes.

(5) Traffic Diversion

The section between Taroko Entrance and Changchun Tunnel continues to operate under traffic diversion measures.

Westbound (Taroko → Tianxiang)

Shakadang Tunnel (Taroko National Park Headquarters) → Xilaan Tunnel → Changchun Tunnel (Provincial Highway 8) → Tianxiang

Eastbound (Tianxiang → Taroko)

Provincial Highway 8 → Changchun Tunnel → Taroko Entrance

3. Other Temporary or Mobile Construction Areas

Temporary or mobile construction works (such as asphalt pavement milling and resurfacing) will be scheduled in coordination with nearby work zones and the traffic release schedules at Guanyuan, Tianxiang, and Taroko Entrance.

To minimize traffic impacts, temporary short-duration traffic control measures may be implemented, or separate traffic control notices will be announced as necessary.

Travel Advisory

The Taroko Maintenance Office reminds motorists traveling between Dayuling and Taroko Entrance (approximately 74 km) of the following recommendations:

Eastbound (Dayuling → Taroko)

Drivers are advised to arrive at Tianxiang no later than 17:00 in order to catch the final traffic release period from 17:00 to 18:00.

Westbound (Taroko → Dayuling)

Drivers are advised to pass the traffic control station at the east portal of Shakadang Tunnel by 15:00 to ensure they can pass the Guanyuan control point before the 18:30 nighttime closure.

The eastern section of the Central Cross-Island Highway (Provincial Highway 8) continues to undergo emergency repairs to slopes, roadbeds, and pavement damaged by earthquakes and typhoons.

Traffic release periods may be delayed or cancelled due to adverse weather or unexpected incidents. Motorists are advised to plan their trips carefully, prepare contingency plans, monitor weather forecasts and road conditions, and obtain the latest traffic information through the Highway Bureau Smart Provincial Highway Real-time Information Service website or the Happy Highway App, as well as highway traffic broadcasts.

The Highway Bureau wishes everyone a safe journey.

Responsible Unit: Taroko Maintenance Office

Road Information Hotline: +886-3-9962683

Contact Person: Section Chief Chang Pei-Yun (+886-3-8610775)

Last Updated: August 4, 2026

For the latest highway information, please contact the Taroko Maintenance Office.

Management Authority

For information regarding the Central Cross-Island Highway (Provincial Highway 8), please contact the Taroko Maintenance Office at +886-3-8610775 or the Eastern Region Branch, Highway Bureau at +886-3-9962683.

Update Notice

Information is current as of August 4, 2026. Should any changes occur, please contact the management authority for the latest updates.

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Provincial Highway 14A (Central Cross-Island Highway Wushe Branch Line) (Mt. Hehuan Area) Road Info (Wushe - Dayuling) 

Traffic Control & Construction Information

The Highway Bureau advises motorists traveling on the aforementioned road sections to remain attentive to changeful message signs (CMS) along the roadside. The traffic control center of this branch office will issue real-time traffic updates and driving recommendations accordingly. For details on traffic relief measures and real-time road conditions, please visit the Highway Bureau website, the Real-Time Traffic Information System, download the "Happy Highway" App, or call the motorist service hotline at 0800-231-035.
The Highway Bureau wishes you a safe journey.
•    Organizing Unit: Puli Maintenance Section, Central Region Highway Bureau
•    Road Condition Inquiry Hotline: 049-2982066
•    Contact Person: Section Chief Chiou, Biing-Rong
•    For the latest highway updates, please contact the Highway Bureau.
•    Date of Update: August 4, 2026

Management Authorities: For inquiries regarding the Central Cross-Island Highway Wushe Branch Line (Provincial Highway 14A), please contact the Taroko Maintenance Section at 03-8610775 or the Puli Maintenance Section at 049-2982066.
Update Note: This information is current as of August 4, 2026. In the event of any changes, please contact the management authorities to verify the latest updates.

 

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Provincial Highway 9 (Su-hua Highway) Construction and Traffic Control Information

Open / Construction and Traffic Control

1. Drainage Box Culvert and Road Improvement Project
Provincial Highway 9D, km 9+400 (Jiugongli Section)
August 11 to October 31, daily from 8:00 a.m. to 5:00 p.m. Single-lane alternating traffic will be implemented under mobile traffic control.
2. Tree Pruning Operation
Provincial Highway 9, km 113+600–123+500 (Dong'ao to Nan'ao Section)
August 7 to August 11, daily from 8:00 a.m. to 5:00 p.m. Subject to mobile traffic control.
3. Concrete Barrier Operation
Provincial Highway 9, km 117+600 (Xin'ao Tunnel Equipment Room)
June 9 to August 14 (including weekends). The work zone will narrow the roadway.
4. Road Inspection and Testing Operation
Provincial Highway 9, km 118+800–120+150 (Nan'ao Section)
August 11, from 6:00 p.m. to 11:00 p.m. Single-lane alternating traffic will be implemented under mobile traffic control. In the event of rain, the operation will be postponed.
5. Slope Protection Project
Provincial Highway 9, km 120+700 (Nan'ao Section)
July 21 to August 17, daily from 8:00 a.m. to 5:00 p.m. Subject to mobile traffic control.
6. Steel Beam Transportation Operation for the Matai’an River Bridge Reconstruction Project
Provincial Highway 9, km 113+500–123+400 (Dong'ao to Nan'ao Section)
August 4–9, August 11–12, August 14–20, and August 21 to September 1, daily from 11:00 p.m. to 1:30 a.m. the following day. The northbound lane will be closed starting at 11:20 p.m. (control points at km 123+400 and km 121+800). Full closure of the entire roadway will be implemented from 11:30 p.m. to 12:20 a.m. The traffic control and reopening times may be adjusted depending on the actual arrival time of the vehicles in the section (including weekends).
7. Construction Traffic Control for Su-Hua Highway Improvements (Nan'ao to Heping Section)
August 24, from 9:00 p.m. to 6:00 a.m. the following day: the southbound lane will be closed.
August 25, from 9:00 p.m. to 6:00 a.m. the following day: the northbound lane will be closed.
Traffic will be diverted to Provincial Highway 9D.
8. Construction Traffic Control for Su-Hua Highway Improvements (Hezhong to Heping Section)
August 10, from 9:00 p.m. to 1:00 a.m. the following day: the northbound lane will be closed.
August 11, from 9:00 p.m. to 1:00 a.m. the following day: the southbound lane will be closed.
Traffic will be diverted to Provincial Highway 9D.
9. Slope Cutting and Grading Operation
Provincial Highway 9D, km 61+200–61+550 (Heping Section)
August 10 to September 4, daily from 8:00 a.m. to 5:00 p.m. Two-way traffic will be subject to mobile traffic control. Traffic will be released every 30 minutes until vehicles in the affected section have been cleared.
10. Steel Beam Transportation Operation for the Matai’an River Bridge Reconstruction Project
Provincial Highway 9, km 154+700–165+700 (Heren to Chongde Section)
August 4–9, August 11–12, August 14–20, and August 21 to September 1, daily from 11:00 p.m. to 1:30 a.m. the following day. The northbound lane will be closed starting at 12:30 a.m. (control point at km 165+700). Full closure of the entire roadway will be implemented from 12:50 a.m. to 1:30 a.m. The traffic control and reopening times may be adjusted depending on the actual arrival time of the vehicles in the section (including weekends).
11. Daqingshui Shed Tunnel Reconstruction Project
Provincial Highway 9, km 159+400 (Daqingshui Shed Tunnel)
July 30 to August 31, daily from 8:00 a.m. to 6:00 p.m. Subject to mobile traffic control. Depending on site conditions, the roadway may be fully closed in both directions, with each closure lasting approximately 30 minutes.
Reminder

Mountain roads remain vulnerable to rockfalls due to earthquake damage. During periods of heavy or prolonged rainfall, road conditions may deteriorate rapidly and become difficult to predict. Unless absolutely necessary, please avoid traveling on mountain roads after severe weather.

Travelers are advised to monitor weather forecasts and the latest road closure and traffic information, plan their journeys in advance, and prepare alternative travel arrangements. Please make full use of the Directorate General of Highways' real-time provincial highway traffic information service website, download the "Happy Highway App," and listen to traffic broadcasts to stay informed of the latest road conditions.

The Directorate General of Highways wishes you a safe journey!

Last Updated: August 10, 2026

Managing Authorities

For the Su-Hua Highway (Provincial Highway 9), please contact:

Nan'ao Maintenance Section: +886-3-998-2161
Jinyue Maintenance Section: +886-3-998-2501
Eastern Region Branch, Directorate General of Highways: +886-3-996-2683

Update Notes:
Information is current as of August 10, 2026. Please contact the managing authorities for the latest information, as traffic control measures and road conditions may change.