Road Open/ Road Repair Traffic Control

Su-Hua Highway (Provincial Highway 9) Construction Traffic Control Information

1. Provincial Highway 9 Su-Hua Improvement Project— Su'ao to Dong'ao End

From 9:00 on September 30 to 01:00 the following day, the northbound lane will be closed. Please detour via Provincial Highway 9D.

From 21:00 on October 19 to 06:00 the following day, the northbound lane will be closed. From 21:00 on October 20 to 06:00 the following day, the southbound lane will be closed. Please detour via Provincial Highway 9D.

2. Provincial Highway 9D, 9km+400 (Jiugongli Section)

Cross-drainage culvert and pavement improvement works

From September 10 to November 30, daily from 8:00 to 17:00, one-way alternating traffic control will be implemented.

3. Provincial Highway 9, 113km+500–123km+400 (Dong'ao–Nan’ao Section)

Steel beam transportation for the Matai'an River Bridge reconstruction project

From September 29 to October 6, daily from 23:20 to 01:30 the following day.

At 23:20, the northbound lane will be closed (control points: 123km+400 and 121km+800).

From 23:30 to 00:20, the entire road section will be closed. Traffic control and opening times may be adjusted depending on the arrival time of the vehicles at the road section. (Including holidays.)

4. Provincial Highway 9, 116km+100 (Dong'ao Section)  Slope trimming works

From September 14 to September 30, daily from 9:00 to 17:00, traffic will be subject to mobile control.

5. Provincial Highway 9, 120km+700 (Nan’ao Section) Slope construction works

From September 21 to September 23 and from September 29 to October 2, daily from 8:00 to 17:00, one-way alternating traffic control will be implemented.

6. Provincial Highway 9D, 39km+800 (Guanyin Section) Drainage culvert installation works

From September 29 to October 30, daily from 8:00 to 17:00, traffic will be subject to mobile control.

7. Provincial Highway 9D, 44km+300–44km+900 (Guanyin Section) Undergrounding of Taipower utility poles

From September 18 to October 30, daily from 9:00 to 17:00, one-way alternating traffic control will be implemented.

8. Provincial Highway 9 Su-Hua Improvement Project — Heping to Heren End

From 21:00 on October 5 to 06:00 the following day, the northbound lane will be closed.

From October 6 to October 7, daily from 21:00 to 06:00 the following day, the southbound lane will be closed.

Please detour via Provincial Highway 9D.

9. Provincial Highway 9D, 60km+316–61km+156 (Heping Tunnel) Tunnel lighting maintenance

From September 29 to October 7, daily from 20:00 to 05:00 the following day, one-way alternating traffic will be implemented.

10. Provincial Highway 9D, 61km+200–61km+550 (Heping Section)

Slope trimming works

From September 10 to October 7, daily from 8:00 to 17:00, one-way alternating traffic control will be implemented.

However, two-way road closures may be implemented depending on on-site conditions and construction needs.

11. Provincial Highway 9 Su-Hua Improvement Project — Heren to Daqingshui End 

On October 7, the southbound lane will be closed from 9:00 to 12:00, and the northbound lane will be closed from 12:00 to 15:00.

One-way road closure control will be implemented, with one-way alternating traffic.

12. Provincial Highway 9, 154km+700–165km+700 (Heren–Chongde Section) Steel beam transportation for the Matai'an River Bridge reconstruction project

From September 29 to October 6, daily from 23:20 to 01:30 the following day.

At 23:20, the northbound lane will be closed (control points: 123km+400 and 121km+800).

From 23:30 to 00:20, the entire road section will be closed. Traffic control and opening times may be adjusted depending on the arrival time of the vehicles at the road section. (Including holidays.)

13. Provincial Highway 9, 159km+400 (Daqingshui Tunnel Section) Daqingshui Tunnel Reconstruction Works

From September 1 to September 30, daily from 8:00 to 17:00, one-way alternating traffic control will be implemented.

Two-way road closures may be implemented depending on on-site work conditions, with each closure lasting approximately 30 minutes.

Mountain Road Safety Reminder

Mountain roads have been affected by earthquakes and are prone to falling rocks. During heavy rain or prolonged rainfall, road conditions can be difficult to predict. Please avoid entering mountain roads after disasters unless necessary, and always pay attention to weather information and road access conditions.

Please plan your trip in advance and prepare for possible changes.

For the latest road information, please use the Highway Bureau Smart Provincial Highway Real-Time Information Service or download the “Happy Highway APP” on your mobile phone. You may also listen to highway traffic broadcasts for the latest updates.

The Highway Bureau wishes everyone a safe journey!

Last Updated: September 29, 2026

Management Agencies

For the Su-Hua Highway (Provincial Highway 9),

please contact:

Nan’ao Maintenance Section: 03-9982161

Jinyue Maintenance Section: 03-9982501

Eastern Region Branch Office, Highway Bureau:

03-9962683

Update Information

Information is current as of September 29, 2026.

For any changes, please contact the relevant

management agency for the latest information.