Case study | Geotechnical Engineering
18-1016.00 MoDOT Route 6 Bridge Replacements
Missouri Department of Transportation
Bartlett & West, Inc.
$750,000 (West Yellow Creek)
Completed Fall 2019
Kaskaskia Engineering Group, LLC (KEG) completed geotechnical field exploration and analysis and assisted with final design plans for two replacements of existing multi-span, bridge structures. The two structures are located on Route 6 in Sullivan County, Missouri, between the cities of Green City and Reger.
The West Yellow creek bridge was a 3-span bridge constructed in 1955 and supported on driven piles. The West Locust creek bridge was a 6-span bridge built in 1931, supported on driven timber piles.
KEG performed geotechnical exploration and preliminary geotechnical evaluations based on boring data in the vicinity of each respective structure. Two borings were performed near the abutments of each existing structure. Borings for West Yellow creek, extended to depths of 50 feet and did not encounter bedrock. Borings for West Locust Creek extended to auger refusal on bedrock at depths of 34 to 42 feet.
Results of each exploration and geotechnical recommendations for each structure were summarized in Preliminary Geotechnical Reports, for each structure, respectively.
KEG also provided transportation design services for the final design plans for the West Yellow Creek replacement structure. Transportation services included horizontal and vertical alignment designs for the roadway improvements necessary to accommodate the new bridge location. KEG also provided typical sections, utility coordination, ROW sheets, ditch design, maintenance of traffic design, erosion control, pavement marking, guardrail design, pay item schedules, a summary of quantities, special provisions, and cost estimates.
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Maggie & LeoMatt Masterson
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Greta & TilleyMatt Masterson
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