Burlington Northern Overpass Project

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Burlington Northern Overpass Project

Burlington Northern Overpass Project

Project Number: ES50510-8 Federal Aid #BRS-M291(006)
design


Remember: BUSINESSES ARE OPEN: Access to businesses available just north of Cook Road.

Construction Updates | Photo Gallery

Sept. 6, 2017

  • Ground improvements continue south of the railroad tracks
    • Crews are stabilizing the soil by drilling hundreds of 3-foot-diameter holes and filling them with compacted gravel
  • Crews are pouring columns for the new bridge
  • Traffic flow has improved around the Old Highway 99/Cook Road interchange.
    Drivers heading to businesses near the intersection can expect minimal delays outside of morning and evening commute times.
  • Local businesses on Old Highway 99 are open, and access is available just north of Cook Road
  • VIDEO: Watch overpass demolition on Facebook (no account required)


Burlington Northern Overpass
Skagit County and its construction contractor will replace the current timber Burlington Northern Overpass near Cook Road on Old Highway 99 N with a new concrete overpass. Old Highway 99 N will be closed north of Cook Road during construction; drivers will use I-5 to detour around the work area. The new overpass is expected to open in spring 2018.

Project Timeline

  • September 2016 - Design complete
  • November 2016 - Open construction bids
  • December 2016 - Award/execute construction contract
  • January 2017 Contract awarded to Cascade Bridge LLC
  • April 2017 - Begin construction
  • May 2017 – Begin demolition

History
The Burlington Northern Overpass is a timber and steel overpass located on Old Highway 99, three miles north of Burlington and about a quarter-mile north of Cook Road. The overpass was built in 1936 by the State Department of Highways and transferred to Skagit County in the 1960s. Due to its age and the deterioration of the timber and steel, Public Works crews have performed a series of temporary repairs to keep it open to traffic.

The Burlington Northern Overpass is a vital part of both the County and state transportation system. We recognize the importance of maintaining this arterial for the local freight community and for commuters. The existing structure is both structurally deficient and functionally obsolete, with a National Bridge Inventory System (NBIS) sufficiency rating 3 out of 100, which put this bridge as one of the top 5 worst rated bridges within Washington State. The Burlington Northern Overpass carries approximately 6,000 vehicles per day, 15 percent of which is truck and freight traffic. Replacing the bridge will ensure that this route will continue to provide reliable service for years to come

Project Benefits
Construction crews will replace the existing 1,183-foot-long timber trestle bridge with a new prestressed concrete and steel span. The new bridge will be wider, and include structural earth walls, curb and gutter, sidewalks, and a stormwater system. The wider bridge will allow more room for bicycles and pedestrians, and will reduce congestion for drivers by providing more vehicle capacity.

County Funding Partners/Sources

  • Bridge Replacement Advisory Committee (BRAC)
    • Highway Bridge Program (HBP):                              

$12,000,000

  • Legislative Funds (State)
    • Connecting Washington:                                            

$  2,000,000

  • Freight Mobility Strategic Investment Board (FMSIB)            
$  2,000,000
  • Economic Development Fund
    • Demolition                                                                  
$     500.000
  • Total Funds Received:                                                          
  $16,500,000

Contact
For additional information about this project, please contact Bronlea Mishler at 360-416-1309 or bronleam@co.skagit.wa.us. Look for project updates on social media: #SkagitBNOP

 

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