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Central Cross-Island Highway Yilan Branch (Baitao Bridge–Lishan)
- Cross-Island Highways & High Mountains
- Length approx. 74 km
- Highest point: Siyuan Pass, about 1,950 m
- Ascent approx. 2,400 m / Descent approx. 800 m (Baitao Bridge→Lishan)
Today's Departure SummaryLive
LoadingLoading weather along the route…Site Estimate
My vehicle
- Road surface
- —Site Estimate
- Rainfall
- —Official observation
- Wind
- —Official observation
- Crosswind
- —Site Estimate
- Lowest temp.
- —Official observation
- Road
- No Standing Restrictions ListedCheck Highway Bureau for live closures ↗Official notice
- Supplies
- Stretches without servicesNanshan–LishanSupply stops
- Cameras
- 8 cameras2 scenic live streams also availableOfficial camera feed
- Reports
- —ViewRider report
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Upcoming rain probability
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Estimated from stations along the route; not a direct road measurement or official safety assessment
Official observation Raw data from government stations and camerasSite Estimate Calculated by this site from official dataRider report Provided by riders; not official
Rider Reports (provided by riders, not official data; may take up to 5 minutes to appear)
No rider reports right now. If you see rockfall, slippery roads, crashes, or other hazards, pull over and tap “Report Road Conditions” to warn other riders.
DryPossibly DampSlippery Road RiskRecent Heavy Rain
Baitao Bridge 0KSiji 18KNanshan 30KSiyuan Pass 45KWuling 53KLishan 74K
Mileage & Weather Along the Route (left column is approx. km from the start; 📷 tap to view the image)
- 0 km—
- 2 km—
- 18 km—
- 29 km—
- 45 km—
- 50 km—
- 52 km—
- 66 km—
- 74 kmLishan station—
Gas Stations Along the Route (in travel order, from OpenStreetMap)
- ⛽ CPCapprox. 29.4K /
- ⛽ CPCapprox. 73.8K /
Distances between stations are approximate values calculated along the route geometry (only gas stations within 500 m of the route are counted). OpenStreetMap is edited by volunteers, so stations may be missing or closed; check business hours on site. On remote stretches, plan your fuel carefully rather than relying on this data alone.
Elevation Profile (Baitao Bridge ⇄ Lishan; highest approx. 1970 m, lowest approx. 339 m)
Baitao Bridge 339 mLishan 1924 m
The horizontal axis is distance along the route; the vertical axis is elevation (the height scale is exaggerated, so slopes look steeper than they are). Dots mark cameras (tappable) and stations. Elevation is estimated from AWS terrain data; tunnel and bridge sections are interpolated between their ends, so errors of several tens of meters are possible. For planning reference only.
Map
After opening the map, use the buttons to toggle layers. Dot colors follow the estimated road surface; tap a dot to see weather and the camera. Rainfall, temperature, and wind are from the nearest station to each point; road surface moisture is an estimate. Gas stations, stores, restaurants, and attractions come from OpenStreetMap and only include places near the route; check business hours and conditions on site. For closures and traffic control, rely on the Highway Bureau live traffic information ↗. The route line runs from Baitao Bridge to Lishan, joined from the OpenStreetMap road network. Map data © OpenStreetMap contributors.
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Tri-Mountain National Scenic Area Headquarters Live StreamYouTube Source ↗
Tri-Mountain National Scenic Area Headquarters Live StreamYouTube Source ↗
Items labeled “Scenic Live Stream” are YouTube live streams from scenic area headquarters under the Tourism Administration. They show scenery, not the road surface, so they are only useful for checking the sky, clouds, and sea conditions. Streams occasionally go offline or change address.
Route InformationThe following is compiled static information (supply stops, highlights, riding tips), not live conditions
Supply Stops
- ⛽ Gas StationsCPC Datong Yuanshan Map ↗
- ⛽ Gas StationsCPC Nanshan Map ↗confirm opening hours
- 🏪 Convenience Stores / GroceriesFamilyMart Nanshan Village Map ↗tea eggs and hot food
- ⚠ Nanshan–LishanLimited services; check fuel level at Nanshan
- 🏘️ Towns / Settlements (Multiple Services)Lishan Map ↗full services
Listed in travel order. Links open a Google Maps search; check business hours and conditions on site.
Highway 7A begins at Baitao Bridge in Qilan, Datong Township, Yilan County, connecting with the Northern Cross-Island Highway (Highway 7). It follows the upper Lanyang River through Siji and Nanshan, crosses Siyuan Pass at about 1,950 m into Heping District, Taichung, and continues past the Wuling Farm junction to Lishan, where it meets Highway 8. The route is about 74 km long.
Large trucks carry highland vegetables along this corridor. Fog and early-morning winter ice are possible near Siyuan Pass. This page uses eight Highway Bureau cameras up to the approach to Lishan, then nearby station data for Lishan itself.
Highlights & Attractions
From river gorges to highland farms: Qilan, Nanshan Village, Siyuan Pass, and Wuling Farm.
Typical Weather
Siyuan Pass is a weather divide. Heavy rain and fog can affect the Yilan side while the Taichung side is sunny.
Riding Tips
Large farm trucks are common during cabbage harvests. Mud and water on the roadway can reduce traction, particularly in curves.
Sources: Highway Bureau, MOTC, Tri-Mountain National Scenic Area Headquarters (images), CWA (weather observations). Images are provided directly by each source; this site does not store or rebroadcast them.Full details