Overview
WSDOT retrofited eight bridges on SR 520 between I-405 and 148th Avenue NE and one bridge on I-90 at Richards Road to better withstand earthquakes.
WSDOT developed its Seismic Retrofit Program in 1990 in response to the new design standards and to gain a greater understanding of the earthquake risk in the Puget Sound area. In this program WSDOT is strengthening more than 900 bridges and structures across the state.
 | Improves Safety
Strengthening bridge columns and crossbeams will reduce the risk of catastrophic failure during an earthquake.
|
Partnerships & Cooperation
WSDOT awarded the contract to Atkinson Construction in May 2010. Construction began in summer 2010 and was completed in December 2011.
Funding
| Financial Data for PIN 852030A |
| Funding Source |
Amount ($ in thousands) |
| 2003 Gas Tax (Nickel Funding) |
$0 |
| 2005 Gas Tax (TPA) |
$4,094 |
| Pre-Existing Funds (PEF) |
$0 |
| Total |
$4,094 |
|
2005 Gas Tax (Partnership Funding) - $5.3 million
Contact Us
John Chi
WSDOT Project Engineer
ChiJ@wsdot.wa.gov
425-489-5402
Mike Murphy
WSDOT Communications
MurphyM@wsdot.wa.gov
206-440-4699
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