WSDOT Projects

Overview Initial work will focus on upgrading the fire and life safety systems in the Battery Street Tunnel. We will: Install new sprinkler pipes, fire alarm system, ventilation fan controls, and lighting Reinforce the roof beams and add a second emergency exit stairwell in the southbound lanes Convert the short on- and off-ramps just south of the Battery Street Tunnel to emergency access ramps. Once a solution is chosen for the central waterfront – be it above-grade, at-grade, or below-grade – more work on the Battery Street Tunnel may be necessary. We have also developed plans for upgrading the Lenora Street to Battery Street section of the viaduct. It is feasible to reinforce this section because it sits on more stable soil. However, the current design may not be optimal depending on the solution chosen for the central waterfront section.

The work from Lenora to Battery Street will repair approximately one-third of a mile of the project corridor.

To ensure that taxpayer dollars are spent wisely, we want to know more about what will replace the viaduct along the central waterfront before moving forward with further design or construction on this section.

What will construction be like?
Construction on Battery Street Tunnel will start in 2009 and last for approximately one year. Some of this work will involve night and weekend closures. The schedule for work on the Lenora to Battery Street portion of the north end project is to be determined.

We are developing plans for construction, and we will work with the surrounding residents, businesses and freight groups to determine the best ways to keep people and goods moving.

Why are we pursuing these projects?
The Battery Street Tunnel was constructed in the 1950s and has not been upgraded since. Its electrical and mechanical systems do not meet modern safety requirements.

The section of the viaduct from Lenora Street to the Battery Street Tunnel sits on more stable soil and was built with concrete-reinforced columns; however, it needs to be stabilized to better withstand earthquakes.

The End Result

• A safer Battery Street Tunnel
• An earthquake-strengthened roadway