Case study | Structural Engineering
09-0006 Various Bridge Repairs, IDOT District 4
Illinois Department of Transportation
Veenstra & Kimm, Inc.
Kaskaskia Engineering Group, LLC (KEG) provided structural engineering services for various bridges in IDOT District 4. Services included Abbreviated Bridge Condition Reports, Type, Size, and Location (TS&L) plans, preliminary and final design, quantity calculations, final plans, and special provisions.
SN090-0120 – Structure carrying FAU 6707 (Washington Street) over Farm Creek. The structure consists of three spans with an overall bridge length of 209-ft 8-in, measured along the tangent to the horizontally curved roadway. The superstructure includes a cast-in-place reinforced concrete deck supported by steel-wide flange beams. The width of the concrete deck varies due to the curvature of the roadway, combined with the adjacent on and off ramps and sidewalk on the structure. The foundation consists of open abutments supported by steel H-piles and solid wall piers supported by steel H-piles. The repairs that were determined necessary for this structure include removal and replacement of the existing expansion joints and cleaning and painting of the structural steel.
SN 090-0044 – Structure carrying FAP 404 (Riverfront Drive) over Farm Creek, Camp Street, and Toledo, Peoria & Western Railroad. The structure consists of eight spans with an overall bridge length of nearly 650-ft measured along the tangent to the horizontally curved roadway. The superstructure includes a cast-in-place reinforced concrete deck supported by simple span-wide flange beams. The beams have a flared arrangement to accommodate the curved roadway, along with the off-ramp that begins in Span 3. The substructure consists of open expansion abutments and multi-column piers with collision walls. All substructure units were founded on steel H-piles. The repairs that were determined necessary for this structure, in order to increase the load-carrying capacity and allow the structure to remain open without a load posting, included removal and replacement of the original abutment bearings, structural repair of concrete at the piers, and cleaning and painting of the structural steel under the open deck joints. Additional services requested by the District included the removal of the concrete median, open joint repairs, and partial depth deck repairs.
SN 090-0046 – Structure carrying FAU 6712 (Riverfront Drive) over West Washington Street. The structure 3-spans have an overall length of 165-ft 11-in, measured along the tangent to the horizontally curved roadway. The superelevated superstructure consists of a reinforced cast-in-place concrete deck supported by steel-wide flange beams. The substructure consists of driven steel pile-supported abutments and multi-column piers supported on driven steel piles. The repairs that were determined necessary for the structure, in order to increase the load-carrying capacity and allow the structure to remain open with being load posted included: jacking and cribbing at both piers; removal and replacement of the pier caps; installation of new fixed and expansion bearings; beam end repairs which included web repairs, flange repair and replacement of beam ends; and cleaning and painting the structural steel members.
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Maggie & LeoMatt Masterson
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Greta & TilleyMatt Masterson
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