Factoria Boulevard Storm Conveyance Improvements Project BUSINESS - - PowerPoint PPT Presentation

Factoria Boulevard Storm Conveyance Improvements Project

BUSINESS OWNER OUTREACH

Flooding i in F Factoria Bl Blvd/Rich chards Cr s Creek eek D Drainage Ba e Basin

Issue: Recurring street flooding along Factoria Blvd, south of I-90, during high intensity storm events Solution: Increase storm system conveyance capacity to reduce the risk

• f flooding in the Factoria-Richards

Creek drainage basin Project Benefits: Avoid traffic and business impacts and disruptions from street flooding (as well as property damage, environmental pollution)

Flooding on Aug 13-14, 2014 at Factoria Blvd (picture at Formula-1 Fast Lube)

Design Al n Alterna natives

Several Alternatives Considered:

• Option 1: Replace existing Storm Drain with Larger

capacity Conveyance

• Option 2: New Storm Drain parallel on west side

along Factoria Blvd

• Option 3: New conveyance parallel to existing

storm drain along east side

• Option 4: High-capacity inlets and new pipe drain

across Factoria Blvd, and parallel to existing pipe along east side

• Option 5: Detention Vault beneath parking lot

To meet 100-year storm design, option 1 and 4 combined is the preferred alternative.

Proj

• ject S

Scope pe a and C d Com

• mpone

nents

• Conveyance Improvements –
• Replace an existing 5.3 feet x 3.3 feet storm drain

pipe with a larger capacity (9-foot-wide by 4- foot-high) storm conveyance system

• Two new 24-inch-diameter concrete pipes

crossing Factoria Boulevard from west to east

• Utilities Relocation (City’s water line, PSE’s gas

and power line etc)

• Channel Enhancement - Widen Inlet Channel
• f Richards Creek
• Acquire Easement to maintain Inlet Channel
• f Richards Creek

Schedul dule

Alternatives Analysis and Pre-Design 2019-2020 Design 2021 Pre - Construction Early 2022 Begin Construction Spring /Summer 2022 Complete Construction Summer 2023 Development and analysis of potential project designs (alternatives analysis, and preliminary design) Develop detailed design, permit acquisition, and agency coordination Franchise utility relocation Solicit construction contractor and plan construction logistics Construction activities Complete restoration

Fact ctoria B Blvd – Ex Existing C Con

• ndition

* Only select major utilities shown

During Construction

• Need to close both northbound lanes -> im

impac act o

• n tr

traffi fic

• City currently conducting additional Traffic Impact Analysis
• Heavy utility work in a tight space
• Access to businesses maintained through construction

Stages of Construction

• Stage 1: Relocate all impacted utilities.
• Stage 2: Close the Factoria Village entrance at the

SE 3600. Block intersection and install the 4-foot X 9-foot storm drain from Richards Creek to the southeast corner of the intersection.

• Stage 3: Close the Factoria Village entrance

nearest Key Bank and install the remaining 4-foot X 9-foot storm drain from the SE 3600. Block intersection to the north side of the southernmost Factoria Village entrance.

• Stage 4: Close the southernmost Factoria Village

entrance and the northern Chevron/Brown Bear Car Wash entrance. Install the 2-foot X 5-foot storm drain to the north side of the southern Chevron/Brown Bear Car Wash entrance.

• Stage 5: Close the southern Chevron/Brown Bear

Car Wash entrance and install the remaining 2- foot X 5-foot storm drain.

How t to S

• Stay i

y in T Touch

• Project website: Factoria Boulevard Stormwater Conveyance, City of Bellevue
• Subscribe to alerts on webpage
• City of Bellevue Project Manger and Public Information Officer listed on website
• City of Bellevue Traffic Advisories webpage