- The northbound State Route 7 ramp to northbound I-705 and the left lane of the northbound I-5 exit to northbound I-705 and Tacoma City Center will remain closed around the clock until early April. Signed detours are in place for the ramp closure.
- 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
Arpil 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
back to top