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 of 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 oject S Scope pe a and C d Com ompone nents • Conveyance Improvements – o 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 o Two new 24-inch-diameter concrete pipes crossing Factoria Boulevard from west to east o Utilities Relocation (City’s water line, PSE’s gas and power line etc) • Channel Enhancement - Widen Inlet Channel of Richards Creek • Acquire Easement to maintain Inlet Channel of Richards Creek
Schedul dule Begin Alternatives Complete Pre - Design Construction Analysis and Construction Construction Pre-Design Summer 2021 Spring /Summer Early 2022 2023 2022 2019-2020 Development and Develop detailed Solicit construction Construction activities Complete analysis of potential design, permit contractor and plan restoration project designs acquisition, and construction logistics (alternatives analysis, agency coordination and preliminary design) Franchise utility relocation
Fact ctoria B Blvd – Ex Existing C Con ondition * Only select major utilities shown
During Construction Need to close both northbound lanes -> im impac act o on 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 o 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
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