I-70 Blanchette Bridge 2020-2021 Rehabilitation Eastbound I-70 over the Missouri River
Existing Eastbound Bridge • 3700’ Long • Bridge Truss (3 spans) • Steel Plate Girder (16 spans)
Bridge history Opened in 1978 − Provided separate eastbound bridge Major rehab in 2005 − Expansion Joint replacement − Repairs to deck, structural steel, substructure − Full paint overcoated original paint 2005 to present − Driving surface repair, crack repairs Current Operations − 5 lanes on a 68-ft roadway − 77,000 vehicles per day on eastbound bridge
Upcoming needed Maintenance Full Paint Replacement Expansion Joints Barrier Wall Repair Structural Repairs Epoxy Overlay
Why didn’t MoDOT do this in 2012-2013? Components were not to end of useful life yet Required to utilize companion Bridge to manage traffic Project accelerated to 2020 from 2021 original start date because of I- 270 North Design Build Project
Traffic Impacts Westbound I-70 bridge traffic reduced to 3 WB Lanes + 2 EB Lanes separated by barrier Eastbound I-70 bridge traffic reduced to 2 EB Lanes during peak commuting times Nighttime closure of the Eastbound bridge and EB70 on ramps from 5 th Street Closure of S. 5 th Street beneath Blanchette for joint replacement
I-70 Traffic Configuration for 2020
Schedule Construction contract expected to be awarded in January Construction starts March 2020 Goal to have major traffic restrictions completed by Thanksgiving 2020. Closures will continue in 2021. Lane restrictions on Eastbound I-70 only (4 lanes open, additional lane closures off-peak)
Fifth Street Access Full-duration closure of Eastbound I-70 onramp (VMP) Nighttime closures Eastbound I-70 onramp (5 th ) Traffic detoured to MO-364 via S. River Road
South Main Street Short-term closures for expansion joint rehab & painting Traffic detoured to 5 th Street Coordination with City of St. Charles
Katy Trail Short-term closures to allow overhead rehab work Coordination with Dept. of Natural Resources On-street detour available during long-term closures
Alternate Routes
Key Stakeholders St. Charles County businesses Maryland Heights/North Co businesses Hospitals Emergency responders Attractions/Event facilities Regional major employers St. Charles/St. Louis commuters Regional, state and national trucking companies Interstate travelers
Key Stakeholder Issues Access on I-70, at Fifth Street, at Earth City Schedule for the work and its impacts Availability and location of alternate routes Increased commute times Increased congestion on alternate routes Emergency response time to the bridge Increased trucking delivery times
Initial Public Outreach Creation of I-70 Blanchette Bridge Community Advisory Committee − High level regional issues − Representatives from St. Charles and St. Louis sides of the project − Provide information to regions they represent Presentations to groups Media Outreach over winter 2019-2020 Web page on https://www.modot.org/i-70- blanchette-bridge-project
For more information Email: BlanchetteI70@modot.mo.gov Project website: https://www.modot.org/i-70-blanchette-bridge-project CONTACTS I-70 Blanchette Bridge Project Manager Chris Kelly, 314-453-5034 Christopher.Kelly@MoDOT.mo.gov MoDOT St. Charles Area Engineer Andy Tuerck, 314-453-5046 Andrew.Tuerck@MoDOT.mo.gov
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