Click image to see the entire map.
This ramp closure will begin in late December 2013 or January 2014, and will be in place around the clock for up to three months. Click here
to see larger map of detour route.
- A long-term closure of the northbound State Route 7 ramp to northbound Interstate 705, which was scheduled to begin Nov. 12, has been postponed until after the holiday season. The ramp closure will now begin in late December 2013 or early January 2014. Once put into place, the closure will stay in place around the clock for up to three months. During the closure, motorists will be detoured via Interstate 5 and the Portland Avenue interchange. The long-term closure will allow crews to use the ramp as a construction zone from which they will seismically retrofit bridge columns within the I-705/SR 7 interchange. Another current long-term ramp closure, the A Street on-ramp to I-705, is currently in place for the same construction project. That ramp will remain closed until March, 2014.
- M Street in Tacoma is narrowed at I-5 while crews work to seismically strengthen the piers of the bridges supporting I-5.
Project was awarded May 9, 2013 to Quigg Brothers, Inc.
WSDOT is retrofitting I-5 bridges at M Street and along I-705 to meet current earthquake standards.
Crews will install steel jackets on the bridge columns and widen the cross beams to reinforce the bridges. These upgrades improve the integrity and performance of the bridges in the event of an earthquake.
Why is WSDOT
strengthening the bridges against earthquakes?
This work is part of WSDOT's aggressive seismic retrofit program with clear goals of minimizing loss of life and disruption of commerce, as well as reducing the risks of complete bridge collapse.
The End Result
When the project is completed, the columns supporting the M Street bridge and I-705 overcrossings will better withstand earthquakes and resist damage. Trusses, crossbeams and girders also will be better able to resist damage and make for a stronger bridge. The bridges will be up to current earthquake standards.
This will keep traffic flowing on this key route and protect nearby residences, businesses and traffic from damage if the columns were to crumble or fail during or after an earthquake.
Stronger columns, crossbeams and girders help the bridge resist earthquake damage.
What is the project timeline?
March 2013: Advertise for construction
May 2013: Award contract
June 2013: Construction begins
February 2014: Construction complete
|Financial Data for PIN 300599I, 300599P, 300599Q
||Amount ($ in thousands)
|2003 Gas Tax (Nickel Funding)
|2005 Gas Tax (TPA)
|Pre-Existing Funds (PEF)
Project signage will reflect the cost of construction engineering, project bid award and sales tax.
How can I get more information?
WSDOT Project Engineer
Claudia Bingham Baker
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