The following construction activities will be taking place over the next several weeks.East side of I-5 (1st Ave NE between NE 92nd St and NE 107th St)
- Electrical work
- Catch basin work
- Demolition and installation of curb ramps at NE 92nd St and NE 94th St
- Sidewall support work
- Placing bridge spans
- Installation of reinforced concrete for column work
- Installing steel reinforcements and pouring concrete structures for bridge support
- Installation of shoring structures
- Placement of lightweight fill
West side of I-5 (north side of North Seattle College and along N 100th St)
- Grading and paving for curb ramps
- Installation of bridge deck forms and concrete
I-5 median (near the I-5 northbound express lane at NE 103rd St)
- Preparation and staging for first bridge span delivery
- Installation of deck forms
- Nighttime testing of materials
Upcoming bridge span installation over I-5
The next major milestone will be the installation of spans across I-5 in May 2021. During this work, they’ll erect 2 bridge spans; each will be assembled in the median of I-5, moved into place using self-propelled transporters (essentially, mini remote-controlled cars), and lifted by cranes.
What to expect during construction
- Some noise and construction vehicle activity, including cranes
- Some nighttime and weekend work
- Detours for people walking and biking
- Lane reductions on Northgate express lane on- and off-ramp
- 2 freeway closures and detours (on weekends and at night only)
- Construction staging and parking impacts near the construction sites, including at the north side of North Seattle College along N 100th St and on NE 100th St at 1st Ave NE
- Closure of the North Seattle Park & Ride on 1st Ave NE
Questions during construction? Contact:
Darrell Bulmer
NorthgateBridge@seattle.gov
(206) 905-3620
www.seattle.gov/transportation/NorthgatePedBridge.htm
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