University Link tunnel
The University Link tunnel is a 3.15-mile (5.07 km) light rail tunnel in Seattle, Washington. The twin-bore tunnel carries Link light rail service on the University Link Extension of Central Link (now the 1 Line), running from the Downtown Seattle Transit Tunnel to University of Washington station via Capitol Hill station. The 21 ft-wide (6.4 m) tunnels are lined with precast gasketed concrete segments connected with steel bolts and was excavated using three tunnel-boring machines in 2011 and 2012. Light rail service began on March 19, 2016.
A section of tunnel at Capitol Hill station | |
| Overview | |
|---|---|
| Line | 1 Line |
| Location | Seattle, Washington |
| Status | Active |
| Start | Downtown Seattle Transit Tunnel |
| End | University of Washington station |
| Operation | |
| Constructed | 2009–12 |
| Opened | March 19, 2016 |
| Owner | Sound Transit |
| Traffic | Link light rail |
| Technical | |
| Length | 3.15 mi (5.07 km) |
| No. of tracks | Double |
| Track gauge | 4 ft 8+1⁄2 in (1,435 mm) |
| Tunnel clearance | 21 ft (6.4 m) |
| Width | 21 ft (6.4 m) |
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